Indexability and LLM readability checker

One click: can Google crawl and index this page, and how well can LLMs read it? Verdict, LLM score and a copy-ready report.

Can Google index this page, and can AI assistants read it? Click the icon and get a clear answer to both. A stray noindex, a wrong canonical or a robots.txt change after a deploy can quietly remove pages from Google. Teams often only notice weeks later, when traffic drops. Most SEO extensions show dozens of metrics, and this one critical answer gets lost among them. This extension puts that answer first. Click the icon on any page and you get one large verdict at the top: ✅ Indexable ⚠️ At risk: Canonicalised to https://example.com/other-page ❌ Blocked: noindex in X-Robots-Tag The details are underneath for anyone who wants them, and a second click copies a clean report you can paste straight into a ticket. ━━━━━━━━━━━━━━━━━━━━ WHAT ONE CLICK CHECKS ━━━━━━━━━━━━━━━━━━━━ • Status code and redirects The page is fetched again so you see the real status code. Error pages are marked as Blocked, and redirects are flagged with their destination. • Robots directives Looks for noindex and nofollow in the HTTP header and in the page's meta tags. Each directive is checked in the raw HTML the server sends and in the rendered HTML after JavaScript runs, so you also catch a noindex that a script adds or removes. • robots.txt Reads the site's robots.txt with Google's own matching rules. If the page is blocked, the report shows the exact rule and its line number. • Canonical Tells you whether the canonical points to the page itself, points elsewhere, is missing, or conflicts with another one, and explains small differences such as a trailing slash or a query string. • Content without JavaScript Compares the text in the raw HTML with the rendered page, and flags pages that are almost empty until scripts run. • Language versions Flags common hreflang mistakes, such as invalid codes, relative URLs or a missing self-reference. • Title and meta description Checks that both are present and shows their length. ━━━━━━━━━━━━━━━━━━━━ THE VERDICT ━━━━━━━━━━━━━━━━━━━━ ❌ Blocked: Google cannot index the page, for example because of an error status, a noindex, or a robots.txt rule. ⚠️ At risk: the page can be indexed, but something needs attention, such as a redirect, a canonical pointing elsewhere, or content that only appears with JavaScript. ✅ Indexable: nothing stands in the way. The headline always shows the most serious problem, with a count of any other issues below it. The toolbar icon also shows a coloured badge for the page you checked. ━━━━━━━━━━━━━━━━━━━━ LLM READABILITY SCORE ━━━━━━━━━━━━━━━━━━━━ AI assistants and answer engines now read web pages to answer questions and cite their sources. Most of their crawlers do not run JavaScript, and they rely on clear structure. A second section scores how easily these systems can read and cite the page, out of 100, graded Good, Fair or Poor. Every check shows its points and the reasons behind them. The score is separate from the indexability verdict and never changes it. • Structured data: whether the page has valid schema.org markup in its HTML, and whether key fields such as an article's author and date are filled in. • AI crawler access: which AI crawlers the site's robots.txt allows or blocks. Blocking the crawlers that cite pages in AI answers counts more than blocking those that collect training data. • Content without JavaScript: how much of the text AI crawlers actually receive. • Heading structure: a single H1, clear sections and no skipped levels, with the complete heading outline of the page. • Semantics and metadata: page language, main content area, social sharing tags, author and dates. • llms.txt: whether the site provides this optional summary file for language models. • Images and formatting: alt text on images, and the use of lists and tables. ━━━━━━━━━━━━━━━━━━━━ A REPORT READY FOR THE TICKET ━━━━━━━━━━━━━━━━━━━━ Click "Copy report" to get a plain-text summary of the check: the URL, the date, the verdict, every result with its details, and the LLM readability score. It pastes cleanly into any ticketing tool, chat or email. ━━━━━━━━━━━━━━━━━━━━ WHO IT IS FOR ━━━━━━━━━━━━━━━━━━━━ • SEO specialists and agencies checking pages every day • Developers and QA teams verifying a release • Content teams who want to know why a page is not showing in search • Teams preparing their content for AI search ━━━━━━━━━━━━━━━━━━━━ PRIVACY ━━━━━━━━━━━━━━━━━━━━ • Everything runs in your browser. There is no server, no account and no sign-up. • No browsing data, URLs or results are collected, stored or sent to us or to anyone else. • The extension only accesses the page you are viewing, and only when you click its icon. It does not request access to all websites. • To run the check, it requests the page, its robots.txt and its llms.txt from that same website, without your cookies. You see what an anonymous visitor sees, not your logged-in version. ━━━━━━━━━━━━━━━━━━━━ GOOD TO KNOW ━━━━━━━━━━━━━━━━━━━━ • The page is checked as an anonymous visitor. The extension does not pretend to be Google's crawler, so a site that serves crawlers different content can give a different result. • It works on regular web pages. Browser pages and the Chrome Web Store cannot be checked. • For PDFs and other files, only the HTTP checks apply. • Light and dark mode follow your system settings. ━━━━━━━━━━━━━━━━━━━━ MADE BY VANKSEN ━━━━━━━━━━━━━━━━━━━━ Built by Vanksen, an SEO agency in Luxembourg, for daily SEO work: one click, one clear answer, and a report ready for the ticket. Need help with a deindexed site, a migration or visibility in AI search? Click the Vanksen logo in the extension, or visit https://www.vanksen.com/en/seo-agency-in-luxembourg