openlibrary.org
Ranked #187 of 300 on the Leaderboard. Analyzed .
Index Quotient
70.78
Technical Health
81.95Whether search engines can fetch, trust, and quickly load the site.
Strengths
- CrawlabilityStrong
Crawlers are welcome here: a sitemap points the way, links work, and pages are allowed into the index.
- URL and canonical hygieneStrong
URLs are clean and consistent, each page has one address, and missing pages say so.
- Safe to visitStrong
Nothing marks this site as unsafe to visit.
Opportunities
- SpeedWeak
Pages load slowly, which costs visitors before it costs rankings.
- Secure connectionPartial
The connection is encrypted but not fully hardened: steering every visit onto it and sending the standard security headers would finish the job.
Content Quality
81.45Whether pages say clearly what they are about, in a form machines can read.
Strengths
- Titles and descriptionsStrong
Every page has a clear title and a description of its own, and shares well when linked.
- Depth and readabilityStrong
Pages say enough to be useful, in plain language, and stay on the topic their titles promise.
- Images and linksStrong
Images are described in text, and pages link to each other with links that say where they go.
Opportunities
- FreshnessWeak
Nothing dated here is recent, and search engines can tell.
Answer Readiness
35.51Whether content is shaped and marked up so an engine can lift a direct answer.
Opportunities
- Structured dataMissing
Pages carry no structured data, so nothing tells an engine what each one is; marking up the page type, and the site's name, is the first step here.
- Question-and-answer shapePartial
Some headings are questions with an answer beneath them; more of them, each followed by a short direct answer, is what an answer engine lifts.
- Navigation aidsMissing
Pages give no sign of where they sit in the site; a breadcrumb trail on interior pages, in text and in markup, is the fix.
AI Visibility
73.91Whether AI systems can reach, read, and confidently identify the site.
Strengths
- AI accessStrong
AI crawlers are allowed in, and pages may be quoted in AI answers.
- Readable without JavaScriptStrong
The content is in the page itself, marked out from the navigation, and written in prose a machine can lift.
Opportunities
- IdentityWeak
Little here says who is behind the site, in the markup or on the pages themselves.
- FeedsPartial
Either a feed or sitemap dates are in place, not both; machines that watch for new content want both.
- Authorship and sourcingPartial
Some articles say who wrote them and when, and some pages cite sources; the rest should say so too.
Authority
81.09Whether the wider web vouches for the site.
Strengths
- BacklinksStrong
Plenty of other sites link here, including ones that matter.
- TrafficStrong
The site has a large audience.
- Domain historyStrong
The domain has a long history, and history counts.
Opportunities
Nothing here to work on. The points left are the ones only the web's largest sites earn.
Nearby on the Leaderboard
Scores reflect what IndexBot could read from openlibrary.org's available pages on .