Free tools
Free SEO checkers
11 free tools that each answer one question about a website, using the same rules, reason templates and citations as the full audit. None needs an account, and none saves what you check.
Crawling and indexing
Whether search engines may fetch your pages, which ones you have asked them to find, and whether they can be indexed.
- robots.txt checkerParses robots.txt with Google's documented matching rules and tests your sitemap URLs against it.Open the robots.txt checker
- XML sitemap checkerFinds every sitemap, checks the protocol's limits and scope, and loads a sample of the URLs it lists.Open the XML sitemap checker
- Noindex checkerShows the status code, the robots.txt verdict and every robots meta tag and X-Robots-Tag header that decide whether a page can be indexed.Open the noindex checker
URLs and duplicates
Which address each page declares as its own, and how every other address reaches it.
- Canonical tag checkerChecks where each rel=canonical sits, what it points to and whether that target answers 200 without redirecting.Open the canonical tag checker
- Redirect checkerTraces each redirect hop by hop with its status code and checks that every host and protocol variant lands on one address.Open the redirect checker
Titles and snippets
The text a search result is built from, page by page.
- Title tag checkerLists every page's title beside its main heading, flags missing, empty, duplicated and repeated titles, and shows length as information only.Open the title tag checker
- Meta description checkerLists every page's meta description, flags duplicates and repeated tags, and shows length as information only.Open the meta description checker
International sites
Language and regional versions, and whether they point to each other.
AI search and crawlers
Which AI crawlers your robots.txt admits, in each operator's own words, and what your llms.txt contains.
- AI crawler checkerShows which search, training and user-triggered AI crawlers robots.txt admits, in each operator's own words.Open the AI crawler checker
- llms.txt checkerReads /llms.txt and compares its structure with the proposal. Google Search ignores the file, and so does the score.Open the llms.txt checker
Security
Credentials and source code a site hands to anyone who asks, listed without showing them.
How they relate to the full audit
Each SEO checker runs a handful of the scanner's rules on a small crawl of at most 26 pages and shows only the findings that bear on its question. It prints no score, because a bounded crawl that skips most of the audit is not an audit. Every issue it reports is a finding of the full ruleset, with the same wording, fix and quoted source.
The full audit runs all 70 scored rules across 16 categories on up to 200 pages, orders the fixes by the strength of the evidence behind them and prints its score with the arithmetic. The security checker stands apart: its checks are its own, it never shows a secret it finds, and nothing it reports enters the score.
The methodology explains how the rules are chosen and weighed, and the rule catalog lists every one of them.
Want every answer at once? Run the full 70-rule audit.
It is free, needs no account, and cites the primary source behind every finding.
Scan a site