loc.gov
Ranked #138 of 300 on the Leaderboard. Analyzed .
Index Quotient
73.68
Technical Health
91.19Whether 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.
- SpeedStrong
Pages load quickly, and the server answers fast.
- Secure connectionStrong
Every visit is encrypted, and the headers that keep it that way are in place.
Opportunities
- URL and canonical hygienePartial
URLs are mostly in order; what remains is giving every page one settled address and making missing pages answer as missing.
Content Quality
75.32Whether pages say clearly what they are about, in a form machines can read.
Strengths
- Depth and readabilityStrong
Pages say enough to be useful, in plain language, and stay on the topic their titles promise.
- HeadingsStrong
Each page has one main heading, with subheadings in a sensible order beneath it.
- LanguageStrong
The page language is declared and matches what is on the page.
Opportunities
- Titles and descriptionsPartial
Titles are mostly in place; descriptions and link previews are patchier, and each page wants ones of its own.
- Images and linksPartial
Pages link to one another, though some images lack a description and some link text says "read more" rather than where it leads.
Answer Readiness
42.96Whether content is shaped and marked up so an engine can lift a direct answer.
Strengths
- Navigation aidsStrong
Interior pages show where they sit in the site, and say so in a way engines can read.
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.
- Scannable formattingPartial
Pages are partly scannable; opening with a short summary, and putting facts in lists and tables, makes them easier to lift from.
AI Visibility
70.12Whether 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.
Opportunities
- IdentityPartial
Who is behind the site is partly clear; an About page, a Contact page, and markup naming the organization would let machines say so with confidence.
- Readable without JavaScriptPartial
Most content is readable without running scripts, but some pages arrive thin, or the content is not clearly marked out from the furniture around it.
- Authorship and sourcingWeak
Articles rarely say who wrote them or when, and pages rarely link out to sources, which gives an AI little reason to trust them.
Authority
88.81Whether 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
- #137
medicare.gov73.87
- #138
loc.gov73.68
- #139
utexas.edu73.65
Scores reflect what IndexBot could read from loc.gov's available pages on .