The AIO Copilot SEO checker, and 24 more free tools.
Twenty-five page checkers and three account tools. No signup, nothing uploaded, no limits.
Most used
- AI searchAIO Readiness CheckerIs the page built to be found and cited by AI Overviews and assistants?
- AI searchSearch Intent ClassifierInformational, commercial, navigational or transactional.
- On-pageMeta Tag AnalyzerTitles, descriptions, Open Graph, Twitter cards, canonicals.
- On-pageSEO Score Calculator30 weighted ranking factors and a grade.
- TechnicalPage Speed AnalyzerPage weight, scripts, render-blocking resources.
- TechnicalMobile Friendly CheckerViewport, responsive CSS, font sizes, tap targets.
- ConvertHTML to MarkdownClean Markdown from any HTML, for migrations and AI.
- ConvertPDF to MarkdownText from a PDF as clean Markdown, in the browser.
For the whole account, from your own exports.
Search Console and Google Ads downloads, read in the page.
- Did it work?Free SEO impact analysis from two Search Console exports: changed pages against matched untouched pages and a placebo test.
- Ads leak checkFind the search terms that spent with no conversions, with proposed negatives, match types and what each would also block.
- Paid vs organicJoin a Google Ads search terms report to Search Console and see ad spend on searches you already rank for, position beside every dollar..
AI search
- AIO Readiness CheckerIs the page built to be found and cited by AI Overviews and assistants?
- LLMS.TXT GeneratorWrite a standards-compliant llms.txt for your site.
- Search Intent ClassifierInformational, commercial, navigational or transactional.
- AI Content OptimizerStructure, headings, question patterns and lists.
- AI Readability ScorerFlesch, Gunning Fog, Coleman-Liau and SMOG.
On-page
- Meta Tag AnalyzerTitles, descriptions, Open Graph, Twitter cards, canonicals.
- SEO Score Calculator30 weighted ranking factors and a grade.
- Heading Structure AnalyzerH1 to H6 hierarchy, gaps and skipped levels.
- Keyword Density AnalyzerWord, two-word and three-word phrase frequency.
- SERP Preview ToolHow the result looks on desktop and mobile.
- Open Graph PreviewerHow the page looks when it is shared.
- Image SEO CheckerAlt text, dimensions, lazy loading, formats.
- Internal Link AnalyzerInternal and external links, anchor text, attributes.
Technical
- Page Speed AnalyzerPage weight, scripts, render-blocking resources.
- Mobile Friendly CheckerViewport, responsive CSS, font sizes, tap targets.
- Core Web Vitals CalculatorLCP, CLS and INP against Google's thresholds.
- Robots.txt ValidatorSyntax, user agents, allow and disallow rules.
- Sitemap ValidatorXML structure, URLs, lastmod, priorities.
- Canonical Tag CheckerMissing, duplicate, relative and mismatched canonicals.
- Redirect Chain CheckerHops, protocol changes and loops.
- Security Headers AnalyzerHSTS, CSP, X-Frame-Options, graded.
Questions
Are these SEO tools really free?
Yes. No signup, no account, no usage limit. Every checker runs in your browser.
Is my data sent anywhere?
No. The checkers read the HTML, text or file you give them inside the page. Nothing is uploaded or stored.
Which tool should I start with?
For a page: the AIO Readiness Checker and the Meta Tag Analyzer. For a whole account: the export tools, which run on your own Search Console and Google Ads downloads.
What is the difference between the checkers and the export tools?
The checkers look at one page you paste in. The export tools read a Search Console or Google Ads export and answer an account-level question: did a change work, which search terms waste money, where you pay for clicks you already rank for.
See what your work earns.
Priced per site, for one site or forty. Tell us how many you manage and we email your price and the installation steps.