Free On-Page SEO Audit
Paste a page's HTML and get an instant on-page SEO audit: title, meta, headings, images, links and schema.
Paste your page HTML and get an instant, verifiable on-page audit with a score and a prioritized checklist.
Paste your page HTML for an instant on-page audit.
Run this tool
Free daily runs · Pro is unlimited.
How to use On-Page SEO Audit
- Paste your page HTML.
- Read the score and issues.
- Fix the high-priority items first.
Frequently asked questions
What does it check?
Title, meta description, H1, canonical, images alt, links (internal/external), schema presence, viewport and more.
Does it fetch my site?
This version audits pasted HTML. Automatic crawling is available on paid plans.
Is it free?
Yes, free with no signup.
Automate this at scale
MarsGeo Pro adds bulk audit, programmatic SEO page generation and API access.
See plansRelated tools
Robots.txt Generator
Generate a valid robots.txt with allow/disallow rules, sitemap and crawl-delay. Copy and p…
Open →XML Sitemap Generator
Paste your URLs and generate a valid XML sitemap ready to submit to Google Search Console.…
Open →Canonical Tag Checker
Paste a page's HTML and instantly see its canonical tag, title, meta description, H1 and O…
Open →Meta Description Generator
Turn a paragraph into a clean, length-checked meta description with a live SERP preview.…
Open →SEO Title Generator
Generate title tag variants for a keyword and see how they look in Google with a pixel-wid…
Open →Open Graph Generator
Generate Open Graph and Twitter Card meta tags so your link previews look right on social …
Open →