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SEO audit for jeffhoulahanecologist.com
HOME
Health 79/100 (good) · 14 pages crawled · generated 2026-08-26
Download Markdown report (feed to ChatGPT / Claude / Cursor)Jeff Houlahan, Ecologist. I’ve decided to stop submitting manuscripts to scientific journals and to publish my research on my own website.
14
pages crawled
7
indexable pages
0
errors
29
warnings
81
notices
1
orphan pages
0
broken links
Category breakdown
| Category | Score | Errors | Warnings | Notices |
|---|---|---|---|---|
| Canonical | 85 | 0 | 7 | 0 |
| Headings | 85 | 0 | 7 | 0 |
| Performance | 85 | 0 | 7 | 11 |
| Duplicate | 91 | 0 | 4 | 2 |
| Content | 94 | 0 | 3 | 6 |
| Links | 98 | 0 | 1 | 0 |
| Agent Readiness | 100 | 0 | 0 | 6 |
| Cache | 100 | 0 | 0 | 7 |
| Images | 100 | 0 | 0 | 2 |
| Meta Description | 100 | 0 | 0 | 3 |
| Security | 100 | 0 | 0 | 14 |
| Sitemap | 100 | 0 | 0 | 1 |
| Social | 100 | 0 | 0 | 7 |
| Structured Data | 100 | 0 | 0 | 7 |
| Titles | 100 | 0 | 0 | 7 |
| URL | 100 | 0 | 0 | 8 |
Findings
Warnings (7 rules)
warning Missing canonical tag
Rule canonical.missing · Canonical · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/
- https://www.jeffhoulahanecologist.com/books.html
- https://www.jeffhoulahanecologist.com/contact.html
- https://www.jeffhoulahanecologist.com/essays.html
- https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/papers.html
- https://www.jeffhoulahanecologist.com/why.html
warning Thin content (low word count)
Rule content.thin · Content · 3 occurrence(s)
warning Duplicate page content
Rule duplicate.content · Duplicate · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — content shared by 2 pages: https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/index.html — content shared by 2 pages: https://www.jeffhoulahanecologist.com/
warning Duplicate <title> across pages
Rule duplicate.title · Duplicate · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — title shared by 2 pages: https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/index.html — title shared by 2 pages: https://www.jeffhoulahanecologist.com/
warning Missing <h1>
Rule h1.missing · Headings · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/
- https://www.jeffhoulahanecologist.com/books.html
- https://www.jeffhoulahanecologist.com/contact.html
- https://www.jeffhoulahanecologist.com/essays.html
- https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/papers.html
- https://www.jeffhoulahanecologist.com/why.html
warning Orphan page (no internal inlinks)
Rule links.orphan · Links · 1 occurrence(s)
- https://www.jeffhoulahanecologist.com/index.html — no internal links point here
warning Render-blocking script in <head> (no defer/async)
Rule perf.render_blocking · Performance · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — 5 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.jeffhoulahanecologist.com/books.html — 5 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.jeffhoulahanecologist.com/contact.html — 5 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.jeffhoulahanecologist.com/essays.html — 5 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.jeffhoulahanecologist.com/index.html — 5 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.jeffhoulahanecologist.com/papers.html — 5 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.jeffhoulahanecologist.com/why.html — 5 render-blocking <script> in <head> (add defer/async or use type=module)
Notices (21 rules)
notice No llms.txt for AI agents
Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — no llms.txt found at the site root — add one so AI agents get a curated site summary
notice No main landmark for AI agents
Rule agent.no_main_landmark · Agent Readiness · 5 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — add a <main> element (or role=main) around the primary content
- https://www.jeffhoulahanecologist.com/essays.html — add a <main> element (or role=main) around the primary content
- https://www.jeffhoulahanecologist.com/index.html — add a <main> element (or role=main) around the primary content
- https://www.jeffhoulahanecologist.com/papers.html — add a <main> element (or role=main) around the primary content
- https://www.jeffhoulahanecologist.com/why.html — add a <main> element (or role=main) around the primary content
notice Page served uncached (no-store/private or CDN bypass)
Rule cache.not_cacheable · Cache · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — Cache-Control: max-age=30, private, no-store · cloudflare: EXPIRED
- https://www.jeffhoulahanecologist.com/books.html — Cache-Control: max-age=30, private, no-store · cloudflare: MISS
- https://www.jeffhoulahanecologist.com/contact.html — Cache-Control: max-age=30, private, no-store · cloudflare: MISS
- https://www.jeffhoulahanecologist.com/essays.html — Cache-Control: max-age=30, private, no-store · cloudflare: MISS
- https://www.jeffhoulahanecologist.com/index.html — Cache-Control: max-age=30, private, no-store · cloudflare: MISS
- https://www.jeffhoulahanecologist.com/papers.html — Cache-Control: max-age=30, private, no-store · cloudflare: MISS
- https://www.jeffhoulahanecologist.com/why.html — Cache-Control: max-age=30, private, no-store · cloudflare: MISS
notice Low text-to-HTML ratio
Rule content.low_ratio · Content · 3 occurrence(s)
notice Main text is hard to read (low Flesch Reading Ease)
Rule content.readability_poor · Content · 1 occurrence(s)
- https://www.jeffhoulahanecologist.com/papers.html — this page reads as difficult (Flesch Reading Ease 35, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
notice Duplicate meta description across pages
Rule duplicate.meta_desc · Duplicate · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — meta description shared by 2 pages: https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/index.html — meta description shared by 2 pages: https://www.jeffhoulahanecologist.com/
notice Likely hero image lacks fetchpriority=high
Rule images.hero_no_fetchpriority · Performance · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — the likely hero/LCP image (untitled-design-87_orig.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://www.jeffhoulahanecologist.com/index.html — the likely hero/LCP image (untitled-design-87_orig.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.
notice Images without width/height (layout shift / CLS)
Rule images.missing_dimensions · Images · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — 1 of 1 images without width/height
- https://www.jeffhoulahanecologist.com/index.html — 1 of 1 images without width/height
notice Legacy <meta name=keywords> tag present (Google ignores it)
Rule meta.keywords_present · Content · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.jeffhoulahanecologist.com/index.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
notice Meta description too long
Rule meta_desc.too_long · Meta Description · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/papers.html — 193 chars
- https://www.jeffhoulahanecologist.com/why.html — 196 chars
notice Meta description too short
Rule meta_desc.too_short · Meta Description · 1 occurrence(s)
notice Legacy image format (jpg/png/gif) with no next-gen fallback
Rule perf.images_legacy_format · Performance · 2 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — 1 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://www.jeffhoulahanecologist.com/index.html — 1 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.
notice No ETag header (no conditional GET for unchanged pages)
Rule perf.no_etag · Performance · 7 occurrence(s)
- https://www.jeffhoulahanecologist.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://www.jeffhoulahanecologist.com/books.html — 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://www.jeffhoulahanecologist.com/contact.html — 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://www.jeffhoulahanecologist.com/essays.html — 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://www.jeffhoulahanecologist.com/index.html — 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://www.jeffhoulahanecologist.com/papers.html — 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://www.jeffhoulahanecologist.com/why.html — 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.
notice No structured data detected
Rule schema.none · Structured Data · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/
- https://www.jeffhoulahanecologist.com/books.html
- https://www.jeffhoulahanecologist.com/contact.html
- https://www.jeffhoulahanecologist.com/essays.html
- https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/papers.html
- https://www.jeffhoulahanecologist.com/why.html
notice Missing recommended security headers
Rule security.missing_headers · Security · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — HSTS, CSP, X-Content-Type-Options
- https://www.jeffhoulahanecologist.com/books.html — CSP, X-Content-Type-Options, HSTS
- https://www.jeffhoulahanecologist.com/contact.html — HSTS, CSP, X-Content-Type-Options
- https://www.jeffhoulahanecologist.com/essays.html — HSTS, CSP, X-Content-Type-Options
- https://www.jeffhoulahanecologist.com/index.html — CSP, X-Content-Type-Options, HSTS
- https://www.jeffhoulahanecologist.com/papers.html — CSP, X-Content-Type-Options, HSTS
- https://www.jeffhoulahanecologist.com/why.html — HSTS, CSP, X-Content-Type-Options
notice target=_blank link without rel=noopener (tab-napping)
Rule security.unsafe_cross_origin_links · Security · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.jeffhoulahanecologist.com/books.html — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.jeffhoulahanecologist.com/contact.html — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.jeffhoulahanecologist.com/essays.html — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.jeffhoulahanecologist.com/index.html — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.jeffhoulahanecologist.com/papers.html — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.jeffhoulahanecologist.com/why.html — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
notice Indexable page not listed in sitemap
Rule sitemap.orphan_not_listed · Sitemap · 1 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — indexable but not in sitemap
notice Title is very short
Rule title.too_short · Titles · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/ — 4 chars
- https://www.jeffhoulahanecologist.com/books.html — 5 chars
- https://www.jeffhoulahanecologist.com/contact.html — 7 chars
- https://www.jeffhoulahanecologist.com/essays.html — 6 chars
- https://www.jeffhoulahanecologist.com/index.html — 4 chars
- https://www.jeffhoulahanecologist.com/papers.html — 6 chars
- https://www.jeffhoulahanecologist.com/why.html — 3 chars
notice Missing Twitter Card tag
Rule twitter.missing · Social · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/
- https://www.jeffhoulahanecologist.com/books.html
- https://www.jeffhoulahanecologist.com/contact.html
- https://www.jeffhoulahanecologist.com/essays.html
- https://www.jeffhoulahanecologist.com/index.html
- https://www.jeffhoulahanecologist.com/papers.html
- https://www.jeffhoulahanecologist.com/why.html
notice URL is very long
Rule url.too_long · URL · 1 occurrence(s)
notice Underscores in URL path (prefer hyphens)
Rule url.underscores · URL · 7 occurrence(s)
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/good_science.pdf
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/how_i_learned_to_love_the_gompertz__updated_february_6_2026_.pdf
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/optimal_alpha.pdf
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/optimal_alpha_1.0.pdf
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/optimal_alpha_2.0.pdf
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/optimal_alpha_cancer.pdf
- https://www.jeffhoulahanecologist.com/uploads/1/1/0/3/11038855/why_i_am_self-publishing__1_.docx__1_.pdf
Pages (showing 14 of 14)
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