---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: rubywtf.com
report_url: "https://crawlinx.com/audit/rubywtf.com"
crawl_id: 20260729T004500-c041ba94
health_score: 65
generated_at: 2026-08-26T17:26:05Z
total_pages: 27
html_pages: 25
indexable_pages: 23
errors: 0
warnings: 153
notices: 290
---

# SEO audit: rubywtf.com

**Health score: 65/100** — needs attention

> Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/rubywtf.com

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 27 |
| HTML pages | 25 |
| Indexable | 23 |
| Non-indexable | 2 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 1059 ms |
| Errors / Warnings / Notices | 0 / 153 / 290 |
| Status codes | 1×0, 26×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Mobile | 73 | 0 | 24 | 0 |
| Performance | 73 | 0 | 24 | 93 |
| Headings | 74 | 0 | 23 | 0 |
| Agent Readiness | 76 | 0 | 22 | 20 |
| Images | 76 | 0 | 22 | 23 |
| Content | 78 | 0 | 20 | 19 |
| Duplicate | 94 | 0 | 5 | 0 |
| Indexability | 96 | 0 | 4 | 0 |
| Meta Description | 96 | 0 | 4 | 14 |
| Budget | 97 | 0 | 3 | 0 |
| Canonical | 99 | 0 | 1 | 0 |
| Links | 99 | 0 | 1 | 46 |
| Amp | 100 | 0 | 0 | 19 |
| Crawlability | 100 | 0 | 0 | 2 |
| Security | 100 | 0 | 0 | 1 |
| Sitemap | 100 | 0 | 0 | 2 |
| Social | 100 | 0 | 0 | 42 |
| Structured Data | 100 | 0 | 0 | 2 |
| Titles | 100 | 0 | 0 | 7 |

## Issues

### Warnings (153)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 22

- [https://rubywtf.com/](https://rubywtf.com/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 2 button/link(s) with no text or aria-label — an agent can't target them

#### robots.txt-disallowed URL receives internal links (crawl-budget leak)

- Rule: `budget.disallow_linked` · Category: Budget · Occurrences: 1

- [https://rubywtf.com/random](https://rubywtf.com/random) — internal links point to https://rubywtf.com/random, which robots.txt disallows for Googlebot — Googlebot discovers the URL, checks robots, then rejects it without indexing, wasting crawl budget and losing the link equity. Remove the internal links, or use noindex instead of Disallow if the page should be fetchable. Linked from: https://rubywtf.com/, https://rubywtf.com/post/43670123738/nl-in-ruby, https://rubywtf.com/post/20624075127.

#### Noindex page receives internal links (crawl-budget waste)

- Rule: `budget.noindex_linked` · Category: Budget · Occurrences: 2

- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — this noindex page has 22 internal inlink(s) — Googlebot follows them, fetches the page, then drops it unindexed, spending crawl budget for no indexing benefit (and the links leak equity). Remove/redirect the links, or drop the noindex if the page should be indexed. Linked from: https://rubywtf.com/, https://rubywtf.com/post/43670123738/nl-in-ruby, https://rubywtf.com/post/20624075127.
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — this noindex page has 1 internal inlink(s) — Googlebot follows them, fetches the page, then drops it unindexed, spending crawl budget for no indexing benefit (and the links leak equity). Remove/redirect the links, or drop the noindex if the page should be indexed. Linked from: https://rubywtf.com/mobile.

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 1

- [https://rubywtf.com/archive](https://rubywtf.com/archive)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 20

- [https://rubywtf.com/archive](https://rubywtf.com/archive) — 5 words
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 54 words
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 61 words
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 49 words
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 38 words
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 58 words
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 40 words
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 61 words
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 67 words
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 54 words
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 48 words
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 76 words
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 62 words
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 127 words
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 69 words
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 50 words
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 54 words
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 70 words
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 64 words
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 45 words

#### noindex set via the X-Robots-Tag HTTP header (easy to miss)

- Rule: `directives.noindex_via_x_robots` · Category: Indexability · Occurrences: 2

- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — this page is noindex via the X-Robots-Tag HTTP header (not a meta tag) — set at the server/CDN layer and easy to miss. Confirm it's intentional; one broad rule can deindex a whole path.
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — this page is noindex via the X-Robots-Tag HTTP header (not a meta tag) — set at the server/CDN layer and easy to miss. Confirm it's intentional; one broad rule can deindex a whole path.

#### Duplicate page content

- Rule: `duplicate.content` · Category: Duplicate · Occurrences: 2

- [https://rubywtf.com/](https://rubywtf.com/) — content shared by 2 pages: https://rubywtf.com/page/1
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — content shared by 2 pages: https://rubywtf.com/

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 3

- [https://rubywtf.com/](https://rubywtf.com/) — title shared by 3 pages: https://rubywtf.com/page/2, https://rubywtf.com/page/1
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — title shared by 3 pages: https://rubywtf.com/, https://rubywtf.com/page/2
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — title shared by 3 pages: https://rubywtf.com/, https://rubywtf.com/page/1

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 23

- [https://rubywtf.com/](https://rubywtf.com/)
- [https://rubywtf.com/archive](https://rubywtf.com/archive)
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1)
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2)
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function)
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables)
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file)
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127)
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise)
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style)
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x)
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries)
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen)
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank)
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting)
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch)
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks)
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time)
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii)
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round)
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is)
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b)
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 22

- [https://rubywtf.com/](https://rubywtf.com/) — 2 of 2 images missing alt
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 2 of 2 images missing alt
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 2 of 2 images missing alt
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 2 of 2 images missing alt
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 2 of 2 images missing alt
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 2 of 2 images missing alt
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 2 of 2 images missing alt
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 2 of 2 images missing alt
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 2 of 2 images missing alt
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 2 of 2 images missing alt
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 2 of 2 images missing alt
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 2 of 2 images missing alt
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 2 of 2 images missing alt
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 2 of 2 images missing alt
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 2 of 2 images missing alt
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 2 of 2 images missing alt

#### noindex + nofollow (blocks link equity flow)

- Rule: `index.noindex_nofollow` · Category: Indexability · Occurrences: 2

- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — meta/X-Robots: header=noindex, nofollow
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — meta/X-Robots: header=noindex, nofollow

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 1

- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — https://rubywtf.com/page/1 → https://rubywtf.com/

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 4

- [https://rubywtf.com/](https://rubywtf.com/)
- [https://rubywtf.com/archive](https://rubywtf.com/archive)
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1)
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2)

#### Missing viewport meta tag

- Rule: `mobile.viewport_missing` · Category: Mobile · Occurrences: 24

- [https://rubywtf.com/](https://rubywtf.com/)
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile)
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2)
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1)
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2)
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function)
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables)
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file)
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127)
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise)
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style)
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x)
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries)
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen)
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank)
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting)
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch)
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks)
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time)
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii)
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round)
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is)
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b)
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby)

#### Render-blocking script in <head> (no defer/async)

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 24

- [https://rubywtf.com/](https://rubywtf.com/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 2 render-blocking <script> in <head> (add defer/async or use type=module)

### Notices (290)

#### No llms.txt for AI agents

- Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1

- [https://rubywtf.com/](https://rubywtf.com/) — no llms.txt found at the site root — add one so AI agents get a curated site summary

#### No main landmark for AI agents

- Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 19

- [https://rubywtf.com/](https://rubywtf.com/) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — add a <main> element (or role=main) around the primary content
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — add a <main> element (or role=main) around the primary content

#### AMP markup present (no Google Search benefit since Jul 2026)

- Rule: `amp.deprecated` · Category: Amp · Occurrences: 19

- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.

#### Low text-to-HTML ratio

- Rule: `content.low_ratio` · Category: Content · Occurrences: 19

- [https://rubywtf.com/archive](https://rubywtf.com/archive) — 0.1%
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 4.3%
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 4.4%
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 4.3%
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 4.2%
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 4.4%
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 4.2%
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 4.5%
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 4.6%
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 4.4%
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 4.4%
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 4.6%
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 4.6%
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 4.6%
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 4.4%
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 4.3%
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 4.7%
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 4.4%
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 4.2%

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 22

- [https://rubywtf.com/](https://rubywtf.com/) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — the likely hero/LCP image (rubywtf.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.

#### Images without width/height (layout shift / CLS)

- Rule: `images.missing_dimensions` · Category: Images · Occurrences: 23

- [https://rubywtf.com/](https://rubywtf.com/) — 2 of 2 images without width/height
- [https://rubywtf.com/archive](https://rubywtf.com/archive) — 1 of 1 images without width/height
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 2 of 2 images without width/height
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 2 of 2 images without width/height
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 2 of 2 images without width/height
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 2 of 2 images without width/height
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 2 of 2 images without width/height
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 2 of 2 images without width/height
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 2 of 2 images without width/height
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 2 of 2 images without width/height
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 2 of 2 images without width/height
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 2 of 2 images without width/height
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 2 of 2 images without width/height
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 2 of 2 images without width/height
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 2 of 2 images without width/height
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 2 of 2 images without width/height
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 2 of 2 images without width/height

#### Internal link has no anchor text / accessible name

- Rule: `links.no_anchor_text` · Category: Links · Occurrences: 22

- [https://rubywtf.com/](https://rubywtf.com/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.

#### Page has only one internal inlink (fragile crawl path)

- Rule: `links.single_inlink` · Category: Links · Occurrences: 1

- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.

#### Internal link points to a noindex page

- Rule: `links.to_noindex` · Category: Links · Occurrences: 23

- [https://rubywtf.com/](https://rubywtf.com/) — https://rubywtf.com/mobile
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — https://rubywtf.com/mobile/page/2
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — https://rubywtf.com/mobile
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — https://rubywtf.com/mobile
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — https://rubywtf.com/mobile

#### Meta description too long

- Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 14

- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 176 chars
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 203 chars
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 193 chars
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 191 chars
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 179 chars
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 170 chars
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 202 chars
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 203 chars
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 195 chars
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 203 chars
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 198 chars
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 187 chars
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 194 chars
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 184 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 23

- [https://rubywtf.com/](https://rubywtf.com/) — og:description
- [https://rubywtf.com/archive](https://rubywtf.com/archive) — og:description, og:image
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — og:description
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — og:description
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — og:image
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — og:image
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — og:image
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — og:image
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — og:image
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — og:image
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — og:image
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — og:image
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — og:image
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — og:image
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — og:image
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — og:image
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — og:image
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — og:image
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — og:image
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — og:image
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — og:image
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — og:image
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — og:image

#### Legacy image format (jpg/png/gif) with no next-gen fallback

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 22

- [https://rubywtf.com/](https://rubywtf.com/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.

#### No ETag header (no conditional GET for unchanged pages)

- Rule: `perf.no_etag` · Category: Performance · Occurrences: 24

- [https://rubywtf.com/](https://rubywtf.com/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.

#### No Last-Modified header (no conditional GET for unchanged pages)

- Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 25

- [https://rubywtf.com/](https://rubywtf.com/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/archive](https://rubywtf.com/archive) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.

#### URL redirects to another URL

- Rule: `redirect.single` · Category: Crawlability · Occurrences: 1

- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — redirects to https://rubywtf.com/

#### Blocked by robots.txt

- Rule: `robots.blocked` · Category: Crawlability · Occurrences: 1

- [https://rubywtf.com/random](https://rubywtf.com/random) — Disallowed by robots.txt; not fetched

#### Deep page has no BreadcrumbList structured data

- Rule: `schema.breadcrumb_missing` · Category: Structured Data · Occurrences: 1

- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — depth-2 page has structured data but no BreadcrumbList

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 1

- [https://rubywtf.com/archive](https://rubywtf.com/archive)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 1

- [https://rubywtf.com/archive](https://rubywtf.com/archive) — HSTS

#### Indexable page not listed in sitemap

- Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 2

- [https://rubywtf.com/archive](https://rubywtf.com/archive) — indexable but not in sitemap
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — indexable but not in sitemap

#### Title tag is identical to the H1 (missed keyword variation)

- Rule: `title.same_as_h1` · Category: Titles · Occurrences: 2

- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — the <title> and the H1 are identical — differentiate them to cover more query variation

#### Title is very short

- Rule: `title.too_short` · Category: Titles · Occurrences: 5

- [https://rubywtf.com/](https://rubywtf.com/) — 8 chars
- [https://rubywtf.com/mobile](https://rubywtf.com/mobile) — 8 chars
- [https://rubywtf.com/mobile/page/2](https://rubywtf.com/mobile/page/2) — 8 chars
- [https://rubywtf.com/page/1](https://rubywtf.com/page/1) — 8 chars
- [https://rubywtf.com/page/2](https://rubywtf.com/page/2) — 8 chars

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 19

- [https://rubywtf.com/post/20611182546/the-global-hash-function](https://rubywtf.com/post/20611182546/the-global-hash-function)
- [https://rubywtf.com/post/20619748793/class-variables](https://rubywtf.com/post/20619748793/class-variables)
- [https://rubywtf.com/post/20621192256/but-there-is-no-file](https://rubywtf.com/post/20621192256/but-there-is-no-file)
- [https://rubywtf.com/post/20624075127](https://rubywtf.com/post/20624075127)
- [https://rubywtf.com/post/20624194164/line-noise](https://rubywtf.com/post/20624194164/line-noise)
- [https://rubywtf.com/post/20994130990/indiana-style](https://rubywtf.com/post/20994130990/indiana-style)
- [https://rubywtf.com/post/20994886315/x-versus-x](https://rubywtf.com/post/20994886315/x-versus-x)
- [https://rubywtf.com/post/21041117654/ruby-mysteries](https://rubywtf.com/post/21041117654/ruby-mysteries)
- [https://rubywtf.com/post/21041262473/how-can-this-happen](https://rubywtf.com/post/21041262473/how-can-this-happen)
- [https://rubywtf.com/post/21660532373/objects-blank](https://rubywtf.com/post/21660532373/objects-blank)
- [https://rubywtf.com/post/21744020991/string-splitting](https://rubywtf.com/post/21744020991/string-splitting)
- [https://rubywtf.com/post/21748289557/assertnomatch](https://rubywtf.com/post/21748289557/assertnomatch)
- [https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks](https://rubywtf.com/post/22333466966/rwtf-classic-the-seven-types-of-blocks)
- [https://rubywtf.com/post/24037145224/the-definition-of-time](https://rubywtf.com/post/24037145224/the-definition-of-time)
- [https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii](https://rubywtf.com/post/24158299137/as-opposed-to-mexican-ascii)
- [https://rubywtf.com/post/31903896834/but-why-does-it-round](https://rubywtf.com/post/31903896834/but-why-does-it-round)
- [https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is](https://rubywtf.com/post/39059463698/it-depends-on-what-the-meaning-of-is-a-is)
- [https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b](https://rubywtf.com/post/41892234788/when-abmin-a-b-a-b)
- [https://rubywtf.com/post/43670123738/nl-in-ruby](https://rubywtf.com/post/43670123738/nl-in-ruby)

## Checks & coverage

Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean.

- ✗ Agent Readiness — 22 warning(s), 20 notice(s)
- ✓ AI Content — clean
- ✗ Amp — 19 notice(s)
- ✗ Budget — 3 warning(s)
- ✓ Cache — clean
- ✗ Canonical — 1 warning(s)
- ✗ Content — 20 warning(s), 19 notice(s)
- ✗ Crawlability — 2 notice(s)
- ✗ Duplicate — 5 warning(s)
- ✓ Geo — clean
- ✗ Headings — 23 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 22 warning(s), 23 notice(s)
- ✗ Indexability — 4 warning(s)
- ✗ Links — 1 warning(s), 46 notice(s)
- ✗ Meta Description — 4 warning(s), 14 notice(s)
- ✗ Mobile — 24 warning(s)
- ✗ Performance — 24 warning(s), 93 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 1 notice(s)
- ✗ Sitemap — 2 notice(s)
- ✗ Social — 42 notice(s)
- ✗ Structured Data — 2 notice(s)
- ✗ Titles — 7 notice(s)
- ✓ URL — clean
- ✓ Video — clean

---
*Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/rubywtf.com*

## Use Crawlinx from your app / agent

Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit.

### MCP server (agent skill)

Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line:

```bash
claude mcp add --transport http crawlinx https://crawlinx.com/mcp
```

Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed:

- `scan_url` — start an SEO audit of a URL.
- `get_report` — fetch the finished report as structured JSON.
- `get_report_markdown` — fetch a compact, LLM-ready Markdown report.

Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page.

### HTTP API

For apps and CLI scripts, the same audit is available over plain HTTP.

**Start a scan**

```
POST https://crawlinx.com/api/scan
Content-Type: application/json

{"url":"https://example.com","mode":"free"}
```

`mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check).
Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans.

**Get the JSON report**

```
GET https://crawlinx.com/api/scan/{id}/report
```

Returns the full structured report JSON once the scan completes.

**Get this Markdown report**

```
GET https://crawlinx.com/r/{id}.md
```

Returns this LLM-ready Markdown document.

**List recent public audits**

```
GET https://crawlinx.com/api/reports
```

### Quick start (curl)

```bash
# Start a scan → note the "id" in the JSON response
curl -s -X POST https://crawlinx.com/api/scan \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com","mode":"free"}'

# Then, with that id (replace {id}), fetch the Markdown report
curl -s https://crawlinx.com/r/{id}.md
```

Full API reference & usage rules: https://crawlinx.com/api
