On-Page SEO Tool: Grade Any URL in 10 Seconds
An on-page SEO tool grades a single URL on the things you control on that page: indexability, title and description, headings, content, images, links, structured data, social tags, mobile setup and speed basics. Enter a URL (and a keyword if you like) to get a score and a fix for every failed check.
Every check reads the live page HTML; the score is a weighted sum you can trace item by item. Free, no signup. Updated Oct 24, 2026 by the AEOeye team.
On-Page SEO Checker: 26 Checks, Each With a Fix
The checks are grouped by what they protect, and weighted so that problems which stop indexing count more than polish:
| Group | Checks | Example |
|---|---|---|
| Indexing | 5 | Status 200, no noindex, self-canonical |
| Title & meta | 4 | Title length in pixels, one description |
| Headings | 4 | One H1, logical H2/H3 order |
| Content | 3 | Enough main text, keyword placement |
| Images | 2 | Alt text, explicit dimensions |
| Links | 2 | Internal links in content, anchor text |
| Structured data, social, mobile, speed | 6 | JSON-LD, OG tags, viewport, page weight |
Every failed or warned check comes with what to change.
Check SEO on Page: Title, Headings, Links and Schema
These four areas cause most on-page problems we see. In our October 2026 analysis of 315 big-brand homepages (dataset), 14.3% had no H1 at all and 9.2% had several; 13.2% had titles wider than 600 pixels; and 26% carried no JSON-LD structured data.
Google's SEO Starter Guide covers the same fundamentals: descriptive titles, clear headings, helpful text, descriptive link text and alt text.
On-Page SEO Check vs a Full Site Audit
An on-page check grades one URL; a site audit finds problems across many pages — duplicate titles, orphan pages, redirect chains, sitewide speed. Use this tool when you're publishing or fixing a specific page, and the free SEO audit when you need the whole site.
Does a keyword change the score?
Only the keyword checks. If you enter one, we check that it appears in the title, H1, first 100 words, description and URL. Leave it blank and those checks are skipped rather than failed. We never reward repetition: Google's spam policies treat keyword stuffing as a violation.
Don't chase 100. A page that scores 85 because it skips a decorative image's dimensions is fine; a page that scores 85 because it's noindexed is not. Read the fails first. For the title and description specifically, preview them with the title tag checker.
One page checked. What about the rest of your site?
The free SEO audit crawls your site and scores ~90 checks across 7 areas — with the evidence and the fix for each problem.
FAQ
What is on-page SEO?
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Everything on the page itself that helps search engines understand and rank it: the title, description, headings, content, images, internal links, structured data and technical signals such as indexability.
What is a good on-page SEO score?
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Above 80 usually means the basics are in place. More important than the number is that no indexing check fails, because those can keep a page out of search entirely.
Why is my score different from other SEO tools?
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Every tool weights checks differently. Ours puts indexing first and shows the weight of each check, so you can see exactly why the score is what it is.
Sources
Related free tools
Title Tag Checker
Free title tag checker with real pixel width, not just characters: preview your title and meta description on desktop and mobile, then fix truncation.
Meta Tag Checker
Free meta tag checker: see every tag that matters on a URL — title, description, robots, canonical, viewport, Open Graph, X cards — graded with fixes.
Keyword Density Checker
Free keyword density checker: enter a URL and analyse the text Google reads — top 1-, 2- and 3-word phrases, density and where your keyword appears.
Schema Validator
Free schema validator: parse every JSON-LD block on a URL and flag syntax errors and missing required properties per Google's structured data docs.
SEO Audit Checklist
An SEO audit checklist you can tick or run: 40 checks across crawling, indexing, on-page, speed, mobile, schema and HTTPS, auto-tested for free.