SEO and AI On-Page Checker

What is an on-page and AI audit.

An on-page audit is a structured health check of a single page: does it have one H1, a sensible title and description, clean heading structure, alt text on images, a canonical tag, no accidental noindex, HTTPS, a mobile viewport and enough substance to deserve a ranking. These checks have been the foundation of technical SEO for two decades, and they still decide whether Google can crawl, understand and rank the page at all.

What’s changed is who else is reading your page. ChatGPT, Gemini, Perplexity and Google’s AI Overviews now consume the same HTML and decide whether to quote you in their answers. They care about some of the same things Google does, but they also weigh signals most SEO tools never check: whether structured data spells out what the page is, whether an llms.txt file guides AI crawlers, whether the page answers the question in its opening lines, and whether its facts are clean enough to lift into an answer.

This checker audits both layers in one pass. You get an overall 0 to 100 score built from three weighted parts: technical (40%), content (30%) and AI readiness (30%). Each part expands into individual pass, warn and fail checks, and every failure comes with a one-line fix. It’s the difference between knowing your page “scores 61” and knowing exactly which seven things to change this afternoon.

Here’s how it looks:

How the checker works.

The technical layer crawls your URL through a professional page-rendering service with JavaScript enabled, the same way modern search engines see it. From the rendered page it checks title and description presence and length, H1 count and heading hierarchy, word count, images missing alt text, internal and external link counts, load metrics, canonical tags, indexability directives, HTTPS and the mobile viewport meta. Alongside that, the tool makes its own checks for robots.txt, sitemap.xml and llms.txt, and parses every JSON-LD block on the page to list the schema types it found.

The content and AI layer sends the page’s extracted text and heading structure through one structured AI analysis with a fixed rubric. It returns a content quality score, an answer-first structure score, a one-line reading of the page’s topic and audience, citability notes and the top three content fixes, quoted in the report exactly as generated.

The overall score blends the three parts with published weights: technical 40%, content 30%, AI readiness 30%. The sub-scores always add up to the total, every failed check maps to a specific fix, and nothing in the report is padded to make the audit look bigger than it is.

1. This tool is provided for free, as-is. Audit findings are a diagnostic snapshot, not a guarantee of rankings, AI citations, traffic or any other outcome.

2. Some checks depend on your server allowing our crawler through. Blocked or unverifiable items are labelled as such rather than scored blindly.

3. Fair-use rate limits apply so the tool stays free for everyone. Please only audit pages you own or have a genuine professional interest in.

4. If you choose to email yourself a report, we store that address to send it and may follow up once. We do not sell your data.

FAQ.