Free SEO tools. Check a page, or read the whole site.
- Sitemap extractor
See sitemap addresses and their last-changed dates.
Find your site's sitemap or read a sitemap address you provide. The answer lists up to 2,000 addresses with last-changed dates and tells you which sitemap it read. You can copy the list or download it as a CSV file.
Full details - Canonical tag checker
See where one page's canonical points.
Read one page's canonical from its HTML and HTTP Link header. The answer flags missing or repeated canonicals and address or placement problems. If the canonical points to another page on your site, it checks whether that page answers, redirects or is noindexed.
Full details - Internal link checker
Check up to 100 same-site links from one page.
Check up to 100 links from one page to addresses on the same site. The answer separates working links, redirects, broken links, other errors and refused checks. Redirects show where they lead, and refused checks are never labeled broken.
Full details - Thin content checker
Count one page's words against the 200-word cutoff.
Count the words in one page's visible text. The answer calls 1 to 199 words thin and reports a page with no readable text separately. It uses the same word count and cutoff as a Quorl scan.
Full details - Quorl site scan
An SEO crawler that reads the whole site, not one page.
Quorl reports broken links, duplicate titles, missing meta descriptions, redirects and the internal linking problems a page-by-page checker cannot see. Free to run on any site, deeper once you verify your own.
Full details
Mastheads has five free SEO tools: a sitemap extractor, a canonical tag checker, an internal link checker, a thin content checker and the Quorl site scan. The first four each check one address and need no account or email. The Quorl scan reads up to 100 pages of a site. mastheads.app/tools lists all five, and the Quorl scan runs at mastheads.app/features/quorl.
Yes. The Mastheads sitemap extractor, canonical tag checker, internal link checker and thin content checker are free, with no account, no email and no trial to start. The Mastheads Quorl scan is free for up to 100 pages of any site with no account, and asks for an email address to send the report.
To list the URLs in a site's sitemap, use the Mastheads sitemap extractor. To see where a page's canonical tag points, use the canonical tag checker. To find broken internal links on a page, use the internal link checker, and to count a page's words, the thin content checker. To look across a whole site, use the free Quorl scan.
The four Mastheads free tools each check one address: one page, or one site's sitemap. The free Mastheads Quorl scan reads up to 100 pages of a site and reports broken links, duplicate titles, missing meta descriptions and redirects.
The Mastheads sitemap extractor, canonical tag checker and thin content checker each allow 10 checks an hour per visitor and 5 an hour on any one site. The Mastheads internal link checker, which tests up to 100 links per check, allows 5 an hour per visitor and 3 per site.
The Mastheads sitemap extractor, canonical tag checker, internal link checker and thin content checker keep no copy of your results and ask for no account or email. Mastheads keeps an hourly count of checks and a daily note of which site the tools read, under an identifier made from your IP address, never the IP address itself. The Mastheads Quorl scan asks for an email address to send its report.
Mastheads makes the free SEO tools at mastheads.app/tools. Mastheads writes source-backed articles through ten editorial desks, and Quorl is its site audit. Each of the four free tools answers one question about one address, with no account or email.