On-Page SEO Checker

The On-Page SEO Checker audits the on-page SEO signals of any public web page.

Enter a URL and get a clear checklist of what is set well and what needs attention.

How to audit a page

1. Enter a URL. Any public page you want to review.
2. Analyze. Our server fetches the HTML and your browser inspects it.
3. Read the checklist. Passes, warnings, and issues, each with its value.

The on-page basics, in one place

Search engines rely on a handful of on-page signals to understand a page: a clear title and description, one H1, a sensible heading structure, a canonical URL, and correct robots directives.

This tool checks them all at once, plus Open Graph tags for social sharing and image alt text for accessibility, so you can fix the obvious gaps fast.

• Search snippet: title and meta description length.
• Structure: a single H1 and heading counts.
• Indexing: canonical URL and meta robots.
• Sharing & a11y: Open Graph, Twitter, and image alt text.

Related SEO tools

An audit points out gaps; other tools help fix them. To pull and review the raw meta tags from a URL, the Meta Tags Extractor lists them.

To write new title and description tags, the Meta Tags Generator builds the markup. And to check your keyword balance in the copy, the Keyword Density Checker breaks it down.

Frequently Asked Questions

How does the checker read my page?

Our server fetches the page's HTML (browsers block cross-site requests) and your browser then analyzes it. The page is not stored, only rate-limited to prevent abuse.

What does it check?

It reviews the title and meta description length, a single H1, headings, canonical URL, meta robots, mobile viewport, HTML lang, Open Graph and Twitter tags, image alt text, links, and word count.

What do the pass and warning flags mean?

A green tick means the element follows a common best practice, amber is a suggestion worth reviewing, and red marks something likely to hurt SEO, such as a noindex tag or a missing title.

Does a good score guarantee rankings?

No. On-page checks cover the technical basics that help search engines understand a page, but rankings also depend on content quality, links, and competition.

Can it check a page behind a login?

No. It can only analyze publicly accessible pages, since our server fetches the URL the same way a search engine would.