Website SEO Analyzer
Paste page HTML to audit titles, meta tags, headings and basic on-page SEO signals.
Examples
See what this tool can do.
Audit a page’s on-page SEO
Paste the page’s HTML source to check its title, meta description, headings, images and canonical in one pass.
Find missing meta tags
Instantly see whether a page is missing a title, meta description, viewport or canonical tag.
Catch images without alt text
The analyzer counts images missing alt attributes — an easy accessibility and SEO win.
Check heading structure
Spot missing or multiple H1s and skipped heading levels that confuse search engines.
Tips & tricks
Get the most out of it.
- 1View a page’s source (Ctrl+U) and paste the full HTML for the most complete audit.
- 2Fix errors first (missing title/description/H1), then work through the warnings.
- 3Every page should have exactly one H1 that matches its main topic.
- 4Add descriptive alt text to meaningful images.
- 5Pair this with the SEO Title Analyzer to perfect your title tag.
- 6Nothing you paste is uploaded — the audit runs entirely in your browser.
About Website SEO Analyzer
The Website SEO Analyzer is a free on-page SEO checker. Paste a page’s HTML and it audits the elements that influence rankings — the title tag, meta description, heading structure, images, canonical and more — then lists clear errors and warnings to fix.
What it checks
- Title tag presence and length
- Meta description presence and length
- H1 usage and heading hierarchy
- Images missing alt text
- Canonical, viewport and language attributes
How to use it
Open the page you want to audit, view its source, and paste the HTML. The analyzer highlights problems grouped by severity so you know exactly what to fix first.
Fix issues faster
Refine your title with the SEO Title Analyzer, write a better snippet with the Meta Description Generator, and check internal links with the Broken Link Checker.
Frequently asked questions
It’s an on-page SEO checker: paste a page’s HTML and it audits the elements search engines care about — title, meta description, headings, images, canonical, viewport and language — then reports errors and warnings.