🔒 No upload — the analysis runs in your browser

SEO Checker Tool Free

Paste a page's HTML source and check title length, meta description, H1/H2 structure, alt attributes, links, canonical, Open Graph and JSON-LD — with a 0-100 score and concrete fixes.

Loading a URL only works for sites that allow it (CORS). Most sites do not — that is a browser rule, not a bug. In that case open the page, press Ctrl+U and paste the source into the box above.
Score (0-100)-
Title-
Meta description-
H1 / H2 headings- / -
Words (visible text)-
Images with alt-
Links internal / external-
Canonical-
Open Graph (core)-
JSON-LD blocks-
robots / charset / lang- / -

Score breakdown

Findings and fixes

How the SEO Checker Works

This SEO checker reads the HTML source of a page and reports what is really inside it: title length, meta description length, number of H1 and H2 headings, images without an alt attribute, internal and external links, visible word count, canonical tag, Open Graph tags, JSON-LD structured data, robots meta and page language. Paste the source (browser: right click, View Page Source, or Ctrl+U) and the analysis runs instantly on your device - nothing is uploaded. Every check shows the measured value next to the recommended range, and the score from 0 to 100 comes from 14 fixed rules that add up to 100 points, each listed beside the score. Every failed check comes with a concrete fix, such as the exact number of characters to cut. It is not a crawler, so it judges only the source you paste and cannot predict rankings.

More free tools

Free online utility tools. No signup. No tracking.

Impressum · Sitemap · Some links contain affiliate advertising