SEO Tools
Free SEO tools
Free SEO tools that speed up the checks you need every day in technical SEO work. No sign-up required, and the data you enter is not stored. The analysis runs in your browser; for tools that take an address, the page is fetched through our server, just like a browser would.
Audit and analysis
Tools that score a whole site or a single page, measure its speed and compare it with competitors.
Technical SEO Audit
Crawl up to 50 pages of your site and get a 0–100 score and quick wins covering broken links, canonicals, meta tags, images, structured data and security headers.
Use the tool →On-Page SEO Checker
Audit a single page in depth: title, meta description, heading structure, content, focus keyword usage, links, images, structured data and GEO signals.
Use the tool →Core Web Vitals Test
See real-user LCP, INP and CLS (CrUX) alongside a Lighthouse run; find the LCP element and the fixes that will help most.
Use the tool →SEO Competitor Comparison
Audit your site and your competitors with the same checks and compare them side by side: broken and redirected links, canonicals, Open Graph, structured data URLs, HTML size.
Use the tool →Technical checks
Tools that check links, images, robots.txt rules and HTML weight one by one, in depth.
Broken Link Checker
Check every link, image and resource on a page; see 404s, redirects and server errors with their anchor text and location.
Use the tool →Image SEO Checker
See the alt text, actual format, file size, dimension attributes and lazy loading of every image on a page in one table.
Use the tool →Robots.txt Tester
See exactly what your robots.txt allows Googlebot and AI bots such as ChatGPT, Claude and Perplexity to crawl, down to the rule and line; test changes before you publish.
Use the tool →HTML Size Analyzer
See what takes up space in your HTML: inline CSS/JS, hydration data, base64, SVG. Includes the Googlebot 2 MB limit and compressed size.
Use the tool →App stores (ASO)
A tool that audits your App Store and Google Play listing against official rules and best practices.
Code, previews and structured data
Tools for generating structured data, previewing search results, inspecting a page on your phone and reading its source code.
Google News Preview
See how your article will look in Google search results, Top Stories, the News tab and Discover, on mobile and desktop.
Use the tool →SERP Snippet Preview
Test how your title and meta description will appear on Google's results page, accurate to the character and pixel.
Use the tool →Schema Markup (JSON-LD) Generator
Generate comprehensive JSON-LD linked with @graph for home, category and detail pages: news, blog, e-commerce, recipes, health, video and 6 more types.
Use the tool →Mobile Page Inspector
The desktop “Inspect” feature on your phone: tap any part of a page to see its HTML, CSS rules, box model and place in the DOM tree.
Use the tool →Mobile View Source
Read the source code of any page comfortably on your phone: full screen, adjustable font size, line wrapping, search and jump to section.
Use the tool →HTML Formatter
Fetch a page's source code from its address and make it indented, syntax-highlighted and copyable in one click.
Use the tool →