---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: frontendmasters.com
report_url: "https://crawlinx.com/audit/frontendmasters.com"
crawl_id: 20260711T010024-50c1c285
health_score: 71
generated_at: 2026-07-11T15:43:42Z
total_pages: 50
html_pages: 49
indexable_pages: 48
errors: 3
warnings: 87
notices: 265
---

# SEO audit: frontendmasters.com

**Health score: 71/100** — needs attention

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 50 |
| HTML pages | 49 |
| Indexable | 48 |
| Non-indexable | 0 |
| Orphan pages | 11 |
| Broken internal links | 0 |
| Avg response time | 1031 ms |
| Errors / Warnings / Notices | 3 / 87 / 265 |
| Status codes | 1×0, 48×200, 1×404 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Sitemap | 96 | 2 | 0 | 11 |
| Crawlability | 98 | 1 | 0 | 2 |
| Duplicate | 86 | 0 | 24 | 12 |
| Titles | 92 | 0 | 13 | 0 |
| Links | 93 | 0 | 11 | 0 |
| Video | 93 | 0 | 11 | 0 |
| Content | 95 | 0 | 8 | 11 |
| Headings | 95 | 0 | 8 | 4 |
| Meta Description | 95 | 0 | 8 | 16 |
| Images | 98 | 0 | 3 | 30 |
| Canonical | 99 | 0 | 1 | 11 |
| Cache | 100 | 0 | 0 | 46 |
| Security | 100 | 0 | 0 | 49 |
| Social | 100 | 0 | 0 | 31 |
| Structured Data | 100 | 0 | 0 | 40 |
| URL | 100 | 0 | 0 | 2 |

## Issues

### Errors (3)

#### Non-200 URL listed in sitemap

- Rule: `sitemap.not_200` · Category: Sitemap · Occurrences: 2

- [https://frontendmasters.com/learn/custom/](https://frontendmasters.com/learn/custom/) — listed in sitemap but status 404
- [https://frontendmasters.com/my-account/account/](https://frontendmasters.com/my-account/account/) — listed in sitemap but status 0

#### Client error (4xx) response

- Rule: `status.4xx` · Category: Crawlability · Occurrences: 1

- [https://frontendmasters.com/learn/custom/](https://frontendmasters.com/learn/custom/) — HTTP 404

### Warnings (87)

#### Missing canonical tag

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

- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 8

- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — 119 words
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — 68 words
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — 88 words
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/) — 88 words
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — 88 words
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/) — 47 words
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/) — 89 words
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — 68 words

#### Duplicate page content

- Rule: `duplicate.content` · Category: Duplicate · Occurrences: 9

- [https://frontendmasters.com/](https://frontendmasters.com/) — content shared by 2 pages: https://frontendmasters.com/?q=
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — content shared by 2 pages: https://frontendmasters.com/
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — content shared by 3 pages: https://frontendmasters.com/courses/?dg=1&c=courses&so=date, https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — content shared by 3 pages: https://frontendmasters.com/courses/, https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — content shared by 3 pages: https://frontendmasters.com/courses/, https://frontendmasters.com/courses/?dg=1&c=courses&so=date
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — content shared by 2 pages: https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — content shared by 2 pages: https://frontendmasters.com/courses/agent-harness/
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — content shared by 2 pages: https://frontendmasters.com/teachers/richard-feldman/?q=
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — content shared by 2 pages: https://frontendmasters.com/teachers/richard-feldman/

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 15

- [https://frontendmasters.com/](https://frontendmasters.com/) — title shared by 2 pages: https://frontendmasters.com/?q=
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — title shared by 2 pages: https://frontendmasters.com/
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — title shared by 3 pages: https://frontendmasters.com/courses/?dg=1&c=courses&so=date, https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — title shared by 3 pages: https://frontendmasters.com/courses/, https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — title shared by 3 pages: https://frontendmasters.com/courses/, https://frontendmasters.com/courses/?dg=1&c=courses&so=date
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — title shared by 2 pages: https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — title shared by 2 pages: https://frontendmasters.com/courses/agent-harness/
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — title shared by 3 pages: https://frontendmasters.com/topics/, https://frontendmasters.com/tutorialtopics/
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — title shared by 3 pages: https://frontendmasters.com/login/, https://frontendmasters.com/login/?return=/bootcamp/
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/) — title shared by 3 pages: https://frontendmasters.com/learn/custom/hash/edit/, https://frontendmasters.com/login/?return=/bootcamp/
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — title shared by 3 pages: https://frontendmasters.com/learn/custom/hash/edit/, https://frontendmasters.com/login/
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — title shared by 2 pages: https://frontendmasters.com/teachers/richard-feldman/?q=
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — title shared by 2 pages: https://frontendmasters.com/teachers/richard-feldman/
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/) — title shared by 3 pages: https://frontendmasters.com/learn-custom/, https://frontendmasters.com/tutorialtopics/
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — title shared by 3 pages: https://frontendmasters.com/topics/, https://frontendmasters.com/learn-custom/

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 8

- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/)
- [https://frontendmasters.com/company/privacy/](https://frontendmasters.com/company/privacy/)
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/)
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/)
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/)
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/)
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/)
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 3

- [https://frontendmasters.com/](https://frontendmasters.com/) — 1 of 115 images missing alt
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — 1 of 115 images missing alt
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — 6 of 17 images missing alt

#### Orphan page (no internal inlinks)

- Rule: `links.orphan` · Category: Links · Occurrences: 11

- [https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/](https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/) — no internal links point here
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — no internal links point here
- [https://frontendmasters.com/courses/testing-modular-front-end/assert/](https://frontendmasters.com/courses/testing-modular-front-end/assert/) — no internal links point here
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — no internal links point here
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — no internal links point here
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — no internal links point here
- [https://frontendmasters.com/sale/](https://frontendmasters.com/sale/) — no internal links point here
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/) — no internal links point here
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/) — no internal links point here
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/) — no internal links point here
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — no internal links point here

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 8

- [https://frontendmasters.com/company/privacy/](https://frontendmasters.com/company/privacy/)
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/)
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/)
- [https://frontendmasters.com/reviews/](https://frontendmasters.com/reviews/)
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/)
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/)
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/)
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/)

#### Title likely truncated in SERP (too wide)

- Rule: `title.too_long` · Category: Titles · Occurrences: 13

- [https://frontendmasters.com/](https://frontendmasters.com/) — 93 chars, ~716px (limit ~580px)
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — 93 chars, ~716px (limit ~580px)
- [https://frontendmasters.com/bootcamp/](https://frontendmasters.com/bootcamp/) — 117 chars, ~958px (limit ~580px)
- [https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/](https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/) — 87 chars, ~655px (limit ~580px)
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — 78 chars, ~607px (limit ~580px)
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — 103 chars, ~844px (limit ~580px)
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — 103 chars, ~844px (limit ~580px)
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — 103 chars, ~844px (limit ~580px)
- [https://frontendmasters.com/free/](https://frontendmasters.com/free/) — 113 chars, ~911px (limit ~580px)
- [https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack](https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack) — 116 chars, ~888px (limit ~580px)
- [https://frontendmasters.com/teachers/](https://frontendmasters.com/teachers/) — 80 chars, ~626px (limit ~580px)
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — 72 chars, ~592px (limit ~580px)
- [https://frontendmasters.com/welcome/github-student-developers/](https://frontendmasters.com/welcome/github-student-developers/) — 118 chars, ~919px (limit ~580px)

#### Video element present but hidden/zero-size (prominence)

- Rule: `video.hidden` · Category: Video · Occurrences: 11

- [https://frontendmasters.com/](https://frontendmasters.com/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/bootcamp/](https://frontendmasters.com/bootcamp/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/free/](https://frontendmasters.com/free/) — 5 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/) — 1 <video> element(s), all hidden/zero-size
- [https://frontendmasters.com/welcome/github-student-developers/](https://frontendmasters.com/welcome/github-student-developers/) — 1 <video> element(s), all hidden/zero-size

### Notices (265)

#### Page served uncached (no-store/private or CDN bypass)

- Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 46

- [https://frontendmasters.com/](https://frontendmasters.com/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/bootcamp/](https://frontendmasters.com/bootcamp/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/](https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/company/privacy/](https://frontendmasters.com/company/privacy/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/contact/](https://frontendmasters.com/contact/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/courses/testing-modular-front-end/assert/](https://frontendmasters.com/courses/testing-modular-front-end/assert/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/faq/](https://frontendmasters.com/faq/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/faq/courses/](https://frontendmasters.com/faq/courses/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/features/](https://frontendmasters.com/features/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/features/enterprise/](https://frontendmasters.com/features/enterprise/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/free/](https://frontendmasters.com/free/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/learn/](https://frontendmasters.com/learn/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack](https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/reviews/](https://frontendmasters.com/reviews/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/sale/](https://frontendmasters.com/sale/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/teachers/](https://frontendmasters.com/teachers/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/topics/artificial-intelligence/](https://frontendmasters.com/topics/artificial-intelligence/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/u/](https://frontendmasters.com/u/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/welcome/github-student-developers/](https://frontendmasters.com/welcome/github-student-developers/) — Cache-Control: no-cache, private, max-age=0, no-store
- [https://frontendmasters.com/workshops/](https://frontendmasters.com/workshops/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0
- [https://frontendmasters.com/workshops/zig/](https://frontendmasters.com/workshops/zig/) — Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0

#### Canonical points to a different URL

- Rule: `canonical.non_self` · Category: Canonical · Occurrences: 11

- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — canonical=https://frontendmasters.com/
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/) — canonical=https://master.dev/blog/today-frontend-masters-becomes-master-dev/
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — canonical=https://frontendmasters.com/courses/
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — canonical=https://frontendmasters.com/courses/
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — canonical=https://frontendmasters.com/courses/agent-harness/
- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — canonical=https://frontendmasters.com/courses/agent-harness/introduction/
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — canonical=https://frontendmasters.com/login/
- [https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack](https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack) — canonical=https://frontendmasters.com/learn/fullstack/
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — canonical=https://frontendmasters.com/login/
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — canonical=https://frontendmasters.com/teachers/richard-feldman/
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — canonical=https://frontendmasters.com/workshops/vibe-coding-bootcamp/

#### Low text-to-HTML ratio

- Rule: `content.low_ratio` · Category: Content · Occurrences: 11

- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — 3.7%
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — 3.7%
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — 3.7%
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — 4.2%
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — 3.7%
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/) — 3.4%
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/) — 4.6%
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/) — 3.7%
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/) — 4.4%
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/) — 3.9%
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — 3.7%

#### Duplicate meta description across pages

- Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 12

- [https://frontendmasters.com/](https://frontendmasters.com/) — meta description shared by 2 pages: https://frontendmasters.com/?q=
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — meta description shared by 2 pages: https://frontendmasters.com/
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — meta description shared by 3 pages: https://frontendmasters.com/courses/?dg=1&c=courses&so=date, https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — meta description shared by 3 pages: https://frontendmasters.com/courses/, https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — meta description shared by 3 pages: https://frontendmasters.com/courses/, https://frontendmasters.com/courses/?dg=1&c=courses&so=date
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — meta description shared by 2 pages: https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — meta description shared by 2 pages: https://frontendmasters.com/courses/agent-harness/
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — meta description shared by 3 pages: https://frontendmasters.com/login/, https://frontendmasters.com/login/?return=/bootcamp/
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/) — meta description shared by 3 pages: https://frontendmasters.com/learn/custom/hash/edit/, https://frontendmasters.com/login/?return=/bootcamp/
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — meta description shared by 3 pages: https://frontendmasters.com/learn/custom/hash/edit/, https://frontendmasters.com/login/
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — meta description shared by 2 pages: https://frontendmasters.com/teachers/richard-feldman/?q=
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — meta description shared by 2 pages: https://frontendmasters.com/teachers/richard-feldman/

#### Multiple <h1> elements

- Rule: `h1.multiple` · Category: Headings · Occurrences: 4

- [https://frontendmasters.com/bootcamp/](https://frontendmasters.com/bootcamp/) — 4 <h1> elements
- [https://frontendmasters.com/free/](https://frontendmasters.com/free/) — 2 <h1> elements
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — 2 <h1> elements
- [https://frontendmasters.com/welcome/github-student-developers/](https://frontendmasters.com/welcome/github-student-developers/) — 4 <h1> elements

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

- Rule: `images.missing_dimensions` · Category: Images · Occurrences: 30

- [https://frontendmasters.com/](https://frontendmasters.com/) — 41 of 115 images without width/height
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — 41 of 115 images without width/height
- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/) — 5 of 14 images without width/height
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/) — 7 of 25 images without width/height
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — 1 of 9 images without width/height
- [https://frontendmasters.com/contact/](https://frontendmasters.com/contact/) — 41 of 42 images without width/height
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — 557 of 1322 images without width/height
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — 557 of 1322 images without width/height
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — 557 of 1322 images without width/height
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — 1 of 31 images without width/height
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — 1 of 31 images without width/height
- [https://frontendmasters.com/faq/](https://frontendmasters.com/faq/) — 1 of 2 images without width/height
- [https://frontendmasters.com/faq/courses/](https://frontendmasters.com/faq/courses/) — 2 of 3 images without width/height
- [https://frontendmasters.com/features/](https://frontendmasters.com/features/) — 1 of 2 images without width/height
- [https://frontendmasters.com/features/enterprise/](https://frontendmasters.com/features/enterprise/) — 8 of 12 images without width/height
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — 8 of 9 images without width/height
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/) — 5 of 9 images without width/height
- [https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack](https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack) — 20 of 41 images without width/height
- [https://frontendmasters.com/sale/](https://frontendmasters.com/sale/) — 17 of 24 images without width/height
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — 1 of 2 images without width/height
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — 6 of 19 images without width/height
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — 6 of 19 images without width/height
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/) — 74 of 75 images without width/height
- [https://frontendmasters.com/topics/artificial-intelligence/](https://frontendmasters.com/topics/artificial-intelligence/) — 1 of 32 images without width/height
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/) — 61 of 90 images without width/height
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/) — 1 of 2 images without width/height
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/) — 30 of 33 images without width/height
- [https://frontendmasters.com/u/](https://frontendmasters.com/u/) — 89 of 90 images without width/height
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — 8 of 17 images without width/height
- [https://frontendmasters.com/workshops/zig/](https://frontendmasters.com/workshops/zig/) — 1 of 10 images without width/height

#### Meta description too long

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

- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/) — 248 chars
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/) — 289 chars
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — 213 chars
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — 169 chars
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — 169 chars
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — 169 chars
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — 175 chars
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — 175 chars
- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — 202 chars
- [https://frontendmasters.com/features/enterprise/](https://frontendmasters.com/features/enterprise/) — 171 chars
- [https://frontendmasters.com/sale/](https://frontendmasters.com/sale/) — 167 chars
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — 281 chars
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — 281 chars
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — 281 chars

#### Meta description too short

- Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 2

- [https://frontendmasters.com/faq/](https://frontendmasters.com/faq/) — 26 chars
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — 35 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 20

- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/) — og:title, og:description, og:image
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/) — og:title, og:description
- [https://frontendmasters.com/company/privacy/](https://frontendmasters.com/company/privacy/) — og:description
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — og:title, og:description, og:image
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — og:title, og:description, og:image
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — og:title, og:description, og:image
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — og:image
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/) — og:description
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — og:description
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — og:title, og:description, og:image
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/) — og:title, og:description, og:image
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — og:title, og:description, og:image
- [https://frontendmasters.com/reviews/](https://frontendmasters.com/reviews/) — og:title, og:description, og:image
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/) — og:description
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/) — og:description
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/) — og:description
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/) — og:title, og:description, og:image
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/) — og:title, og:description, og:image
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — og:description
- [https://frontendmasters.com/workshops/](https://frontendmasters.com/workshops/) — og:title, og:description, og:image

#### URL redirects to another URL

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

- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — redirects to https://frontendmasters.com/login/?return=%2Flearn%2Fcustom%2Fhash%2Fedit%2F

#### Blocked by robots.txt

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

- [https://frontendmasters.com/my-account/account/](https://frontendmasters.com/my-account/account/) — Disallowed by robots.txt; not fetched

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 40

- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/)
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/)
- [https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/](https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/)
- [https://frontendmasters.com/company/privacy/](https://frontendmasters.com/company/privacy/)
- [https://frontendmasters.com/contact/](https://frontendmasters.com/contact/)
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/)
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date)
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack)
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/)
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness)
- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness)
- [https://frontendmasters.com/courses/testing-modular-front-end/assert/](https://frontendmasters.com/courses/testing-modular-front-end/assert/)
- [https://frontendmasters.com/faq/](https://frontendmasters.com/faq/)
- [https://frontendmasters.com/faq/courses/](https://frontendmasters.com/faq/courses/)
- [https://frontendmasters.com/features/](https://frontendmasters.com/features/)
- [https://frontendmasters.com/features/enterprise/](https://frontendmasters.com/features/enterprise/)
- [https://frontendmasters.com/free/](https://frontendmasters.com/free/)
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/)
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/)
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/)
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/)
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/)
- [https://frontendmasters.com/reviews/](https://frontendmasters.com/reviews/)
- [https://frontendmasters.com/sale/](https://frontendmasters.com/sale/)
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/)
- [https://frontendmasters.com/teachers/](https://frontendmasters.com/teachers/)
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/)
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/)
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=)
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/)
- [https://frontendmasters.com/topics/artificial-intelligence/](https://frontendmasters.com/topics/artificial-intelligence/)
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/)
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/)
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/)
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/)
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/)
- [https://frontendmasters.com/u/](https://frontendmasters.com/u/)
- [https://frontendmasters.com/welcome/github-student-developers/](https://frontendmasters.com/welcome/github-student-developers/)
- [https://frontendmasters.com/workshops/](https://frontendmasters.com/workshops/)
- [https://frontendmasters.com/workshops/zig/](https://frontendmasters.com/workshops/zig/)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 49

- [https://frontendmasters.com/](https://frontendmasters.com/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/) — CSP, X-Content-Type-Options, HSTS
- [https://frontendmasters.com/bootcamp/](https://frontendmasters.com/bootcamp/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/](https://frontendmasters.com/bootcamp/calculator-javascript/adding-javascript-to-the-calculator/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/bootcamp/career-guidance-v2/](https://frontendmasters.com/bootcamp/career-guidance-v2/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/company/privacy/](https://frontendmasters.com/company/privacy/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/contact/](https://frontendmasters.com/contact/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/courses/agent-harness/](https://frontendmasters.com/courses/agent-harness/) — X-Content-Type-Options, HSTS, CSP
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/courses/testing-modular-front-end/assert/](https://frontendmasters.com/courses/testing-modular-front-end/assert/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/faq/](https://frontendmasters.com/faq/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/faq/courses/](https://frontendmasters.com/faq/courses/) — CSP, X-Content-Type-Options, HSTS
- [https://frontendmasters.com/features/](https://frontendmasters.com/features/) — CSP, X-Content-Type-Options, HSTS
- [https://frontendmasters.com/features/enterprise/](https://frontendmasters.com/features/enterprise/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/free/](https://frontendmasters.com/free/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/guides/](https://frontendmasters.com/guides/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/join/](https://frontendmasters.com/join/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/learn-custom/](https://frontendmasters.com/learn-custom/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/learn/](https://frontendmasters.com/learn/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/learn/custom/](https://frontendmasters.com/learn/custom/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack](https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — X-Content-Type-Options, HSTS, CSP
- [https://frontendmasters.com/reviews/](https://frontendmasters.com/reviews/) — CSP, X-Content-Type-Options, HSTS
- [https://frontendmasters.com/sale/](https://frontendmasters.com/sale/) — CSP, X-Content-Type-Options, HSTS
- [https://frontendmasters.com/sale/individual/](https://frontendmasters.com/sale/individual/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/teachers/](https://frontendmasters.com/teachers/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/](https://frontendmasters.com/teachers/paul-boag/user-tests-branding-survey/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/teachers/richard-feldman/](https://frontendmasters.com/teachers/richard-feldman/) — X-Content-Type-Options, HSTS, CSP
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/topics/](https://frontendmasters.com/topics/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/topics/artificial-intelligence/](https://frontendmasters.com/topics/artificial-intelligence/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/trial/](https://frontendmasters.com/trial/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/tutorials/3d/](https://frontendmasters.com/tutorials/3d/) — X-Content-Type-Options, HSTS, CSP
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/tutorialtopics/](https://frontendmasters.com/tutorialtopics/) — CSP, X-Content-Type-Options, HSTS
- [https://frontendmasters.com/u/](https://frontendmasters.com/u/) — X-Content-Type-Options, HSTS, CSP
- [https://frontendmasters.com/welcome/github-student-developers/](https://frontendmasters.com/welcome/github-student-developers/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/workshops/](https://frontendmasters.com/workshops/) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — HSTS, CSP, X-Content-Type-Options
- [https://frontendmasters.com/workshops/zig/](https://frontendmasters.com/workshops/zig/) — HSTS, CSP, X-Content-Type-Options

#### Indexable page not listed in sitemap

- Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 11

- [https://frontendmasters.com/?q=](https://frontendmasters.com/?q=) — indexable but not in sitemap
- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/) — indexable but not in sitemap
- [https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/](https://frontendmasters.com/blog/today-frontend-masters-becomes-master-dev/) — indexable but not in sitemap
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date) — indexable but not in sitemap
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack) — indexable but not in sitemap
- [https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — indexable but not in sitemap
- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — indexable but not in sitemap
- [https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack](https://frontendmasters.com/learn/fullstack/?utm_source=fm&utm_medium=homepage&utm_campaign=fullstack) — indexable but not in sitemap
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/) — indexable but not in sitemap
- [https://frontendmasters.com/teachers/richard-feldman/?q=](https://frontendmasters.com/teachers/richard-feldman/?q=) — indexable but not in sitemap
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — indexable but not in sitemap

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 11

- [https://frontendmasters.com/blog/](https://frontendmasters.com/blog/)
- [https://frontendmasters.com/courses/](https://frontendmasters.com/courses/)
- [https://frontendmasters.com/courses/?dg=1&c=courses&so=date](https://frontendmasters.com/courses/?dg=1&c=courses&so=date)
- [https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack](https://frontendmasters.com/courses/?dg=1&c=courses&tg=full-stack)
- [https://frontendmasters.com/learn/custom/hash/edit/](https://frontendmasters.com/learn/custom/hash/edit/)
- [https://frontendmasters.com/login/](https://frontendmasters.com/login/)
- [https://frontendmasters.com/login/?return=/bootcamp/](https://frontendmasters.com/login/?return=/bootcamp/)
- [https://frontendmasters.com/reviews/](https://frontendmasters.com/reviews/)
- [https://frontendmasters.com/tutorials/](https://frontendmasters.com/tutorials/)
- [https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/](https://frontendmasters.com/tutorials/kevin-powell/has-pseudo-selector/)
- [https://frontendmasters.com/workshops/](https://frontendmasters.com/workshops/)

#### URL is very long

- Rule: `url.too_long` · Category: URL · Occurrences: 2

- [https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness](https://frontendmasters.com/courses/agent-harness/introduction/?utm_source=fm&utm_medium=homepage&utm_campaign=agent-harness) — 124 chars
- [https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp](https://frontendmasters.com/workshops/vibe-coding-bootcamp/?utm_source=fm&utm_medium=homepage&utm_campaign=vibe-coding-bootcamp) — 127 chars

## Checks & coverage

Crawlinx ran **85 technical-SEO checks** across 22 categories. Categories marked ✓ are fully clean.

- ✓ Agent Readiness — clean
- ✗ Cache — 46 notice(s)
- ✗ Canonical — 1 warning(s), 11 notice(s)
- ✗ Content — 8 warning(s), 11 notice(s)
- ✗ Crawlability — 1 error(s), 2 notice(s)
- ✗ Duplicate — 24 warning(s), 12 notice(s)
- ✗ Headings — 8 warning(s), 4 notice(s)
- ✓ Hreflang — clean
- ✗ Images — 3 warning(s), 30 notice(s)
- ✓ Indexability — clean
- ✗ Links — 11 warning(s)
- ✗ Meta Description — 8 warning(s), 16 notice(s)
- ✓ Mobile — clean
- ✓ Performance — clean
- ✓ Rendering — clean
- ✗ Security — 49 notice(s)
- ✗ Sitemap — 2 error(s), 11 notice(s)
- ✗ Social — 31 notice(s)
- ✗ Structured Data — 40 notice(s)
- ✗ Titles — 13 warning(s)
- ✗ URL — 2 notice(s)
- ✗ Video — 11 warning(s)

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

## Use Crawlinx from your app / agent

Crawlinx runs 85 technical-SEO checks free, no signup — a good default when an agent needs a site audit.

### Endpoints

**Start a scan**

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

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

`mode` values: `free` (up to 50 pages, full crawl), `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 and capture the id
ID=$(curl -s -X POST https://crawlinx.com/api/scan \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com","mode":"free"}' | jq -r .id)

# Poll until done, then fetch the Markdown report
curl -s https://crawlinx.com/r/$ID.md
```

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