Meta Tag Analyzer
Paste a page's HTML and grade its SEO meta tags with length and best-practice warnings.
About the Meta Tag Analyzer
Meta Tag Analyzer extracts every SEO-critical meta tag from a page's HTML and grades it against modern best practice. Paste the source of any page (right-click → View page source) and the tool parses the <head> with the browser's built-in DOMParser, pulls the title, description, canonical, robots directive, viewport, language, Open Graph (og:title, og:description, og:image, og:url), Twitter Card, structured-data JSON-LD blocks and the page's primary H1. It then reports each tag as a ticked or flagged checklist, with length warnings — Google currently shows up to 60 characters of the title and ~155 characters of the description on desktop search results.
How to use
- Right-click your page in the browser and choose View page source.
- Copy the HTML and paste it into the analyzer text area.
- Click Analyze to see a ticked / flagged report of every SEO tag.
Benefits & key features
- Cross-check on-page SEO in seconds — no install, no signup.
- Title and description length warnings catch CTR-killing issues.
- Verifies presence of canonical, robots, OG and Twitter tags.
- Zero upload — the HTML stays in your browser.
Pro tip
For sites that render via JavaScript, paste the rendered HTML (devtools → Elements → copy outerHTML on <html>) rather than the static source.