Catalog / netlib.org

SEO audit for netlib.org

The Netlib

other

Health 64/100 (fair) · 50 pages crawled · generated 2026-07-11

Download Markdown report (feed to ChatGPT / Claude / Cursor)

pages crawled

indexable pages

errors

172

warnings

328

notices

orphan pages

broken links

Category breakdown

Category	Score	Errors	Warnings	Notices
Security	98	1	0	46
Canonical	72	0	46	0
Mobile	72	0	46	44
Meta Description	74	0	44	2
Content	91	0	15	0
Headings	95	0	9	0
Links	96	0	6	0
Agent Readiness	98	0	3	47
Crawlability	99	0	2	6
Images	99	0	1	8
Social	100	0	0	92
Structured Data	100	0	0	46
Titles	100	0	0	36
URL	100	0	0	1

Findings

Errors (1 rules)

error Mixed content on HTTPS page

Rule security.mixed_content · Security · 1 occurrence(s)

https://netlib.org/ — 3 insecure subresource(s), e.g. http://www.netlib.org/lapack/

Warnings (9 rules)

warning Control has no accessible name

Rule agent.control_no_name · Agent Readiness · 3 occurrence(s)

http://netlib.org/toms/ — 1 button/link(s) with no text or aria-label — an agent can't target them
https://netlib.org/liblist.html — 1 button/link(s) with no text or aria-label — an agent can't target them
https://netlib.org/misc/faq.html — 31 button/link(s) with no text or aria-label — an agent can't target them

warning Missing canonical tag

Rule canonical.missing · Canonical · 46 occurrence(s)

warning Thin content (low word count)

Rule content.thin · Content · 15 occurrence(s)

https://netlib.org/ — 124 words
https://netlib.org/access/index.html — 124 words
https://netlib.org/aicm/index.html — 85 words
https://netlib.org/amos/index.html — 130 words
https://netlib.org/ampl/index.html — 107 words
https://netlib.org/atlas/index.html — 114 words
https://netlib.org/editors.html — 163 words
https://netlib.org/fortran/index.html — 114 words
https://netlib.org/liblist.html — 186 words
https://netlib.org/machines/index.html — 134 words
https://netlib.org/maspar/index.html — 63 words
https://netlib.org/math/index.html — 76 words
https://netlib.org/mpfun/index.html — 92 words
https://netlib.org/rib/index.html — 99 words
https://netlib.org/sfmm/index.html — 194 words

warning Incomplete/empty response after retries (likely transient — re-crawl)

Rule fetch.incomplete · Crawlability · 2 occurrence(s)

https://netlib.org/arpack/index.html — HTTP 200, 0 words after 3 attempts
https://netlib.org/utk/misc/counts.html — HTTP 200, 22 words after 3 attempts

warning Missing <h1>

Rule h1.missing · Headings · 9 occurrence(s)

warning Images missing alt text

Rule images.missing_alt · Images · 1 occurrence(s)

https://netlib.org/editors.html — 2 of 3 images missing alt

warning Internal link points to a redirect

Rule links.redirect_target · Links · 6 occurrence(s)

http://www.netlib.org/bibnet/ — http://www.netlib.org/bibnet/ → https://www.netlib.org/bibnet/
https://netlib.org/ — http://netlib.org/toms/ → https://netlib.org/toms/
https://netlib.org/ — http://www.netlib.org/bibnet/ → https://www.netlib.org/bibnet/
https://netlib.org/ — http://www.netlib.org/lapack/index.html → https://www.netlib.org/lapack/index.html
https://netlib.org/ — http://www.netlib.org/lapack/lawns/downloads/index.html → https://www.netlib.org/lapack/lawns/downloads/index.html
https://netlib.org/master/expanded_liblist.html — https://netlib.org/toms/ → https://netlib.org/toms/

warning Missing meta description

Rule meta_desc.missing · Meta Description · 44 occurrence(s)

warning Missing viewport meta tag

Rule mobile.viewport_missing · Mobile · 46 occurrence(s)

Notices (13 rules)

notice No llms.txt for AI agents

Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)

https://netlib.org/ — 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 · 46 occurrence(s)

http://netlib.org/toms/ — add a <main> element (or role=main) around the primary content
http://www.netlib.org/bibnet/ — add a <main> element (or role=main) around the primary content
http://www.netlib.org/lapack/index.html — add a <main> element (or role=main) around the primary content
http://www.netlib.org/lapack/lawns/downloads/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/ — add a <main> element (or role=main) around the primary content
https://netlib.org/a/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/access/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/aicm/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/alliant/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/editors.html — add a <main> element (or role=main) around the primary content
https://netlib.org/fftpack/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/fishpack/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/fitpack/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/floppy/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/liblist.html — add a <main> element (or role=main) around the primary content
https://netlib.org/machines/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/magic/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/maspar/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/master/expanded_liblist.html — add a <main> element (or role=main) around the primary content
https://netlib.org/math/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/misc/faq.html — add a <main> element (or role=main) around the primary content
https://netlib.org/na-digest-html/ — add a <main> element (or role=main) around the primary content
https://netlib.org/random/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/research/index.html — add a <main> element (or role=main) around the primary content
https://netlib.org/rib/index.html — add a <main> element (or role=main) around the primary content

notice Missing html lang attribute

Rule i18n.lang_missing · Mobile · 44 occurrence(s)

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

Rule images.missing_dimensions · Images · 8 occurrence(s)

http://netlib.org/toms/ — 1 of 1 images without width/height
http://www.netlib.org/lapack/index.html — 2 of 2 images without width/height
https://netlib.org/ampl/index.html — 1 of 1 images without width/height
https://netlib.org/editors.html — 2 of 3 images without width/height
https://netlib.org/fp/index.html — 1 of 1 images without width/height
https://netlib.org/liblist.html — 1 of 1 images without width/height
https://netlib.org/misc/faq.html — 1 of 1 images without width/height
https://netlib.org/na-digest-html/ — 1 of 1 images without width/height

notice Meta description too short

Rule meta_desc.too_short · Meta Description · 2 occurrence(s)

https://netlib.org/ampl/index.html — 41 chars
https://netlib.org/fp/index.html — 39 chars

notice Missing Open Graph tags

Rule og.missing · Social · 46 occurrence(s)

http://netlib.org/toms/ — og:title, og:description, og:image
http://www.netlib.org/bibnet/ — og:title, og:description, og:image
http://www.netlib.org/lapack/index.html — og:title, og:description, og:image
http://www.netlib.org/lapack/lawns/downloads/index.html — og:title, og:description, og:image
https://netlib.org/ — og:title, og:description, og:image
https://netlib.org/a/index.html — og:title, og:description, og:image
https://netlib.org/access/index.html — og:title, og:description, og:image
https://netlib.org/aicm/index.html — og:title, og:description, og:image
https://netlib.org/alliant/index.html — og:title, og:description, og:image
https://netlib.org/editors.html — og:title, og:description, og:image
https://netlib.org/fftpack/index.html — og:title, og:description, og:image
https://netlib.org/fishpack/index.html — og:title, og:description, og:image
https://netlib.org/fitpack/index.html — og:title, og:description, og:image
https://netlib.org/floppy/index.html — og:title, og:description, og:image
https://netlib.org/liblist.html — og:title, og:description, og:image
https://netlib.org/machines/index.html — og:title, og:description, og:image
https://netlib.org/magic/index.html — og:title, og:description, og:image
https://netlib.org/maspar/index.html — og:title, og:description, og:image
https://netlib.org/master/expanded_liblist.html — og:title, og:description, og:image
https://netlib.org/math/index.html — og:title, og:description, og:image
https://netlib.org/misc/faq.html — og:title, og:description, og:image
https://netlib.org/na-digest-html/ — og:title, og:description, og:image
https://netlib.org/random/index.html — og:title, og:description, og:image
https://netlib.org/research/index.html — og:title, og:description, og:image
https://netlib.org/rib/index.html — og:title, og:description, og:image

notice URL redirects to another URL

Rule redirect.single · Crawlability · 4 occurrence(s)

http://netlib.org/toms/ — redirects to https://netlib.org/toms/
http://www.netlib.org/bibnet/ — redirects to https://www.netlib.org/bibnet/
http://www.netlib.org/lapack/index.html — redirects to https://www.netlib.org/lapack/index.html
http://www.netlib.org/lapack/lawns/downloads/index.html — redirects to https://www.netlib.org/lapack/lawns/downloads/index.html

notice Blocked by robots.txt

Rule robots.blocked · Crawlability · 2 occurrence(s)

http://www.netlib.org/tex/bib/ — Disallowed by robots.txt; not fetched
https://netlib.org/cgi-bin/search.pl — Disallowed by robots.txt; not fetched

notice No structured data detected

Rule schema.none · Structured Data · 46 occurrence(s)

notice Missing recommended security headers

Rule security.missing_headers · Security · 46 occurrence(s)

http://netlib.org/toms/ — CSP, X-Content-Type-Options
http://www.netlib.org/bibnet/ — CSP, X-Content-Type-Options
http://www.netlib.org/lapack/index.html — CSP, X-Content-Type-Options
http://www.netlib.org/lapack/lawns/downloads/index.html — CSP, X-Content-Type-Options
https://netlib.org/ — CSP, X-Content-Type-Options
https://netlib.org/a/index.html — X-Content-Type-Options, CSP
https://netlib.org/access/index.html — CSP, X-Content-Type-Options
https://netlib.org/aicm/index.html — X-Content-Type-Options, CSP
https://netlib.org/alliant/index.html — CSP, X-Content-Type-Options
https://netlib.org/editors.html — CSP, X-Content-Type-Options
https://netlib.org/fftpack/index.html — CSP, X-Content-Type-Options
https://netlib.org/fishpack/index.html — CSP, X-Content-Type-Options
https://netlib.org/fitpack/index.html — CSP, X-Content-Type-Options
https://netlib.org/floppy/index.html — CSP, X-Content-Type-Options
https://netlib.org/liblist.html — CSP, X-Content-Type-Options
https://netlib.org/machines/index.html — CSP, X-Content-Type-Options
https://netlib.org/magic/index.html — CSP, X-Content-Type-Options
https://netlib.org/maspar/index.html — CSP, X-Content-Type-Options
https://netlib.org/master/expanded_liblist.html — CSP, X-Content-Type-Options
https://netlib.org/math/index.html — CSP, X-Content-Type-Options
https://netlib.org/misc/faq.html — CSP, X-Content-Type-Options
https://netlib.org/na-digest-html/ — CSP, X-Content-Type-Options
https://netlib.org/random/index.html — CSP, X-Content-Type-Options
https://netlib.org/research/index.html — CSP, X-Content-Type-Options
https://netlib.org/rib/index.html — CSP, X-Content-Type-Options

notice Title is very short

Rule title.too_short · Titles · 36 occurrence(s)

http://www.netlib.org/bibnet/ — 14 chars
https://netlib.org/ — 10 chars
https://netlib.org/a/index.html — 1 chars
https://netlib.org/access/index.html — 6 chars
https://netlib.org/aicm/index.html — 4 chars
https://netlib.org/alliant/index.html — 7 chars
https://netlib.org/amos/index.html — 4 chars
https://netlib.org/ampl/index.html — 11 chars
https://netlib.org/fftpack/index.html — 7 chars
https://netlib.org/fishpack/index.html — 8 chars
https://netlib.org/fitpack/index.html — 7 chars
https://netlib.org/floppy/index.html — 6 chars
https://netlib.org/fmm/index.html — 3 chars
https://netlib.org/fn/index.html — 2 chars
https://netlib.org/machines/index.html — 8 chars
https://netlib.org/magic/index.html — 5 chars
https://netlib.org/maspar/index.html — 6 chars
https://netlib.org/math/index.html — 14 chars
https://netlib.org/mds/index.html — 3 chars
https://netlib.org/microscope/index.html — 10 chars
https://netlib.org/misc/faq.html — 10 chars
https://netlib.org/random/index.html — 6 chars
https://netlib.org/research/index.html — 8 chars
https://netlib.org/rib/index.html — 3 chars
https://netlib.org/sched/index.html — 5 chars

notice Missing Twitter Card tag

Rule twitter.missing · Social · 46 occurrence(s)

notice Underscores in URL path (prefer hyphens)

Rule url.underscores · URL · 1 occurrence(s)

https://netlib.org/master/expanded_liblist.html

Pages (showing 50 of 50)

URL	Status	Indexable	Words	In-links
http://www.netlib.org/bibnet/ BibNet Project	200	yes	3348	2
http://netlib.org/toms/ Collected Algorithms of the ACM	200	yes	17740	2
https://netlib.org/na-digest-html/ Main index for NA-Digest	200	yes	282	2
http://www.netlib.org/lapack/index.html LAPACK — Linear Algebra PACKage	200	yes	2097	1
http://www.netlib.org/lapack/lawns/downloads/index.html LAWNs (LAPACK Working Notes)	200	yes	7828	1
https://netlib.org/editors.html Netlib editorial board	200	yes	163	1
https://netlib.org/liblist.html Netlib at The Univ. of Tennessee and ORNL	200	yes	186	1
https://netlib.org/misc/faq.html Netlib FAQ	200	yes	1660	1
https://netlib.org/utk/misc/counts.html Netlib Statistics at UTK/ORNL	200	yes	22	1
https://netlib.org/a/index.html a	200	yes	779	1
https://netlib.org/access/index.html access	200	yes	124	1
https://netlib.org/aicm/index.html aicm	200	yes	85	1
https://netlib.org/alliant/index.html alliant	200	yes	603	1
https://netlib.org/amos/index.html amos	200	yes	130	1
https://netlib.org/ampl/index.html netlib/ampl	200	yes	107	1
https://netlib.org/anl-reports/index.html anl-reports	200	yes	806	1
https://netlib.org/apollo/index.html apollo	200	yes	632	1
https://netlib.org/arpack/index.html arpack	200	yes	0	1
https://netlib.org/atlas/index.html Automatically Tuned Linear Algebra Software (ATLAS)	200	yes	114	1
https://netlib.org/fftpack/index.html FFTPACK	200	yes	530	1
https://netlib.org/fishpack/index.html fishpack	200	yes	758	1
https://netlib.org/fitpack/index.html FITPACK	200	yes	293	1
https://netlib.org/floppy/index.html floppy	200	yes	338	1
https://netlib.org/fmm/index.html fmm	200	yes	218	1
https://netlib.org/fn/index.html fn	200	yes	2802	1
https://netlib.org/fortran-m/index.html The Fortran M Language	200	yes	624	1
https://netlib.org/fortran/index.html fortran	200	yes	114	1
https://netlib.org/fp/index.html netlib/fp	200	yes	227	1
https://netlib.org/gcv/index.html gcv	200	yes	496	1
https://netlib.org/machines/index.html machines	200	yes	134	1
https://netlib.org/magic/index.html magic	200	yes	752	1
https://netlib.org/maspar/index.html maspar	200	yes	63	1
https://netlib.org/master/expanded_liblist.html Netlib Master Index	200	yes	4891	1
https://netlib.org/math/index.html MATH77/mathc90	200	yes	76	1
https://netlib.org/mds/index.html mds	200	yes	1414	1
https://netlib.org/microscope/index.html microscope	200	yes	258	1
https://netlib.org/minpack/index.html minpack	200	yes	302	1
https://netlib.org/mpfun/index.html mpfun	200	yes	92	1
https://netlib.org/random/index.html random	200	yes	448	1
https://netlib.org/research/index.html research	200	yes	412	1
https://netlib.org/rib/index.html rib	200	yes	99	1
https://netlib.org/scalapack/index.html ScaLAPACK — Scalable Linear Algebra PACKage	200	yes	1288	1
https://netlib.org/sched/index.html sched	200	yes	282	1
https://netlib.org/scilib/index.html scilib	200	yes	386	1
https://netlib.org/seispack/index.html seispack	200	yes	921	1
https://netlib.org/sequent/index.html sequent	200	yes	359	1
https://netlib.org/sfmm/index.html sfmm	200	yes	194	1
https://netlib.org/ The Netlib	200	yes	124	0
http://www.netlib.org/tex/bib/	0	no	0	1
https://netlib.org/cgi-bin/search.pl	0	no	0	1

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