Paste a URL or your content and get an instant on-page SEO audit. The On-Page SEO Analyzer checks your title, meta description, headings, links, images and schema, then gives you an SEO score for optimization, naturalness (AI-writing tells) and readability. It also runs AI research for query fan-out, Google’s Web Guide clusters, and concrete fixes you can apply. It’s free, runs entirely in your browser, and nothing you paste is stored.
What is an SEO score checker?
An SEO score checker is a tool that grades a page against the on-page factors search engines and AI answer engines actually read, then gives you a score plus the fixes behind it. This one scores three things separately: an optimization score for how well the page matches search intent and covers the topic, a naturalness score that flags the AI-writing tells, and a readability score. You get the number and the specific reasons for it, not just a verdict.
Why on-page SEO still matters
You publish a page, then guess whether it’s actually optimized. Is the title right? Are the headings clean? Does the writing read like a person wrote it? Small on-page problems quietly hold pages back, and you never see them.
Paste a URL or your draft and this tool checks the whole page in seconds. You get a clear pass, warn or fail on every element, plus a naturalness score that flags the AI-writing tells readers and search engines pick up on. You know exactly what to fix before you publish.
What you get
- A full on-page audit of your title, meta, headings, links, images and schema, each marked pass, warn or fail with a specific fix
- An optimization score that judges keyword intent and how well you cover the topic
- A naturalness score that flags the AI-writing tells to remove, plus a readability score
- AI research for query fan-out and content gaps, run on your own key or opened free in ChatGPT, Claude or Gemini
- Free, no signup, runs in your browser, and you can embed it on your own site
How to use it
- Enter your page URL (or, if your site blocks fetching, paste the page content instead).
- Add your target keyword so the tool can score keyword intent, not just exact match.
- Read the scores and the checklist — every check is pass, warn or fail with a specific fix.
- Use the AI tabs for query fan-out, Web Guide clusters and rewrites. Add your own OpenAI, Anthropic or Gemini key, or open the prompt free in ChatGPT, Claude or Gemini.
- Export the report or grab the embed code to add the tool to your own site.
What it checks
- Title tag and meta description (length + keyword intent)
- Heading structure (one H1, clean H2s, no skipped levels)
- Internal and external links, and anchor-text quality
- Images and alt text
- Schema / structured data, mobile viewport, canonical, indexability
- Content depth, readability (Flesch) and naturalness (the AI-writing tells to remove)
- AEO research: query fan-out, Web Guide clusters and competitive gaps
Frequently asked questions
How do I check my SEO score? Paste a URL or your content above and run the audit. You get an on-page SEO score in seconds, along with naturalness and readability scores and the exact fixes that would raise them. No signup, and nothing you paste leaves your browser.
Is it really free? Yes. The audit and scores are completely free with no signup. The AI research features are optional and run on your own AI key, or you can open the prompt free in ChatGPT, Claude or Gemini.
Do I need an API key? No for the audit. A key is only needed if you want the AI analysis to run inside the tool. Without one, every AI feature gives you a “copy prompt” and “open in ChatGPT / Claude / Gemini” option.
Is my content stored anywhere? No. Everything runs in your browser. Nothing you paste is sent to or saved on this site.
Can I put this tool on my own site? Yes. There’s an “embed on your site” option that gives you a snippet to paste, free.
Part of the free SEO & marketing tools by Anthony Hayes.