Free tools
Free SEO tools that run in your browser
Paste a file, some HTML or a title and get an answer with the reason beside it. No account, and nothing you paste is sent to our server or saved.
Each one says what it checks and what it leaves unverified, so you know where its answer stops.
Crawling and indexing
Whether a crawler may read the page, and what it does with your sitemap.
robots.txt generator
Writes the file, then reads it back with the parser this crawler obeys and tells you what it actually does.
robots.txt tester
Paste a robots.txt and an address to see whether it is allowed, which rule decided it, and every rule that rule beat.
Will my noindex work?
A noindex on a page robots.txt blocks can never be read. Check whether yours can be, before you wait a month for nothing.
What Google ignores in your sitemap
Paste a sitemap to see which parts Google reads and which it discards, with its own documentation beside each answer.
Canonicals and languages
Which address is the real one, and which version each language gets.
hreflang generator
Writes the block that goes on every page in the set, self-reference included, and reports the mistakes that stop a cluster being processed.
Canonical tag checker
Inspect pasted HTML for conflicting canonical tags and resolve relative targets, without confusing a declared URL with Google’s choice.
Titles, snippets and shares
What a search result or a shared link will show, before it goes live.
Twitter card validator
X’s own Card Validator now ends at a sign-in page. Reads the tags you paste and says what a card would carry, without an account.
Meta tag generator
Writes the head block from one title and description, measures them in pixels, and says that Google may replace the description anyway.
Meta title and description length checker
Character counters cite a limit Google never published. This measures width, at a named font, and shows what it assumed.
The same checks, run across a whole site
These tools answer for the one file or page you paste. The crawl reads the pages of a site, follows its sitemap, obeys its robots.txt, and records each page’s canonical and robots directives. Its capability page says what is built and what is not.