Free SEO site checker

What it checks

The tool fetches the URL you enter and inspects the page HTML along with two files at the root of the site:

• Title and meta description: Present, empty, too short or too long?
• Canonical: Is there a canonical tag, which URL does it point to, and is it consistent with the page itself?
• Robots meta: Does the page carry directives such as noindex or nofollow?
• Heading structure (H1–H6): Is there an H1, more than one, and do subheadings follow a logical order?
• Images: Which images are missing alt text?
• Links: Number and split of internal and external links.
• Structured data: Is there JSON-LD or similar markup, and which types are used?
• Open Graph: Title, description and image tags for social sharing.
• hreflang: Are language and regional alternates declared?
• robots.txt and sitemap.xml: Are the files reachable, and is the sitemap referenced in robots.txt?

Each check is marked critical, warning or passed. The overall score is built from those results using explicit rules, and the report shows how much each item contributed. You can print the report or save it as a PDF.

How to use it

1. Enter the full URL of the page to inspect. Beyond the homepage, try a category, product or article page you want to rank.
2. Start with the critical items. These are usually issues that can directly affect indexing or how the page is understood.
3. Then work through the warnings; some may be deliberate choices.
4. After fixing, run the check again and compare.

Interpreting the results

Noindex and canonical come first. An accidental noindex keeps the page out of search results, as Google's robots meta tag documentation describes. A canonical pointing elsewhere tells Google that a different URL is the preferred version; Google treats it as a signal.

robots.txt controls crawling, not indexing. Google's introduction to robots.txt is explicit that it isn't a way to keep a page out of Google. A page blocked from crawling can still appear in results if other pages link to it.

Multiple H1s aren't automatically an error. That's why they appear as a warning rather than a critical issue. A single, clear H1 makes the page's main topic obvious to readers and search engines alike, but some templates use several H1s on purpose.

Structured data doesn't guarantee rich results. Correct markup helps Google understand the page and makes it eligible for certain result types; whether a rich result is shown is up to Google.

Alt text is about accessibility first. Missing alt text matters for screen reader users and for giving images meaning in image search. Empty alt text on purely decorative images can be a deliberate choice.

Limitations

• It inspects one page, so site-wide issues such as broken links, redirect chains, crawl depth and orphan pages are out of reach.
• It reads the server-returned HTML; content injected later by JavaScript may look missing.
• It doesn't measure speed. For performance and user experience, use the Core Web Vitals checker.
• The score is a prioritisation aid, not a rating Google gives your page.

To crawl the whole site every week with a real browser, track issues over time and see daily Core Web Vitals field data, take a look at the SEO site audit.