Tools / SEO
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Web page SEO checker tool

Paste a page HTML or import an .html file to review essential on-page SEO signals in seconds.

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Optional. The tool uses this URL to interpret internal links and canonical tags.

Local processing: the HTML is analyzed in your browser and is not sent to servers.

Quick answer

This tool checks web page SEO from pasted HTML. It analyzes title, meta description, H1, headings, canonical, robots, images, links, Open Graph, viewport, and structured data, then generates a score and a copyable report.

Technical checklist

  • Paste HTML and click analyze to see the score.

Analysis summary

Paste HTML and click analyze to see the score.

What this tool is

It is an on-page SEO analyzer for quick reviews before publishing or optimizing a page. It does not replace a full audit with crawling, performance, backlinks, and Search Console data, but it helps find common HTML issues.

How to use it

  1. Open the page you want to review and copy the rendered HTML or source code.
  2. Paste the HTML into the main field or import an .html file.
  3. Add the page URL if you want canonical and internal links to be interpreted with more context.
  4. Click analyze SEO and review the score, checklist, and priorities.

Analysis criteria

The score combines checks for title, meta description, single H1, heading hierarchy, canonical, meta robots, viewport, image alt text, internal and external links, Open Graph, and JSON-LD. Each item receives a weight based on basic on-page SEO impact.

Practical example

If a page has a clear title, a description within the recommended range, one H1, a valid canonical, and images with alt text, the score tends to rise. If the meta description is missing, there are multiple H1s, and many images lack alt text, the report prioritizes those fixes.

Important limitations

The tool does not access the internet or run JavaScript from external sites. To analyze a dynamic page, paste the HTML already rendered by the browser. Metrics such as Core Web Vitals, real indexing, backlinks, and traffic require dedicated tools.

Useful tips

  • Use a specific title tag, roughly 30 to 60 characters long.
  • Write a clear meta description, usually between 70 and 160 characters.
  • Keep one main H1 and organize H2/H3 by topic.
  • Review images without alt text and links with generic anchor text.
  • Combine this analysis with speed, accessibility, and real search data checks.

Frequently asked questions

Does the tool fetch the URL automatically?

No. To preserve privacy and avoid CORS limitations, the analysis runs on HTML pasted or imported by the user.

Does the score guarantee better Google rankings?

No. The score indicates basic on-page SEO quality, but ranking also depends on search intent, content, authority, performance, experience, and competition.

Can I analyze pages in Portuguese or other languages?

Yes. The HTML can be in any language. The tool evaluates the technical structure and metadata present in the document.

Which HTML should I paste?

Prefer rendered HTML from the browser when the page uses JavaScript to generate content, metadata, or links.