What does this SEO checker analyze?

It fetches your page's HTML server-side and checks 16 on-page SEO signals: HTTPS, HTTP status, page title length, meta description length, H1/H2 headings, canonical URL, robots meta, Open Graph tags, Twitter Card, image alt text, word count, page size, server response time, structured data (JSON-LD), and viewport meta tag.

Does it check backlinks or Core Web Vitals?

No — this tool analyzes on-page HTML signals only. For Core Web Vitals (LCP, CLS, FID), use Google PageSpeed Insights. For backlinks, use a dedicated link analysis tool.

Why might it fail to fetch my page?

Some servers block non-browser user agents or have strict CORS policies. Pages behind authentication, paywalls, or bot protection (Cloudflare, etc.) may not be accessible. Make sure your URL is publicly accessible.

What is a good SEO score?

80+ is good — it means most on-page fundamentals are in place. 50—79 means there are improvements to make. Below 50 indicates missing critical elements like a title, H1, or HTTPS.

How often does it cache results?

Results are cached for 5 minutes on the server. If you've just made changes to your page, wait a few minutes and run the check again to see updated results.

Does this tool crawl my entire site?

No — it analyzes a single URL at a time. Paste the exact page you want to check.

SEO Checker — Analyze On-Page SEO Free Online

Analyze any URL for on-page SEO issues instantly. Checks title tag, meta description, H1, canonical URL, Open Graph tags, structured data, response time and 10+ more signals. Free, no sign-up.

100% Private

No Upload

Instant

What is SEO Checker — Analyze On-Page SEO Free Online?

An SEO checker fetches a webpage and analyzes its HTML for on-page SEO signals — the technical and content factors that affect how search engines crawl, index, and rank your pages. Our tool checks 16 signals including title length, meta description, heading structure, canonical URL, Open Graph tags, structured data, HTTPS, page size, and server response time. It runs server-side so it sees the actual HTML that search engine bots receive.

How to Use SEO Checker — Analyze On-Page SEO Free Online

1Enter the full URL of the page you want to analyze (include https://).
2Click Analyze SEO — the tool fetches your page server-side and checks 16 SEO signals.
3Review your SEO score (0—100) and the pass/warn/fail breakdown.
4Click any check to expand it and see the exact value found plus actionable advice.
5Filter by Failed or Warnings to prioritize the most impactful fixes first.

Key Features

16 on-page SEO checks in one tool
SEO score from 0 to 100 with visual gauge
Checks title, meta description, H1, H2, canonical, robots meta
Open Graph and Twitter Card tag validation
Structured data (JSON-LD) detection
Server response time and HTML page size
Image alt text audit
Word count analysis
Filter checks by Pass / Warn / Fail

Benefits

Identify critical SEO issues before publishing or after a site change
See exactly what Google's crawler sees — not browser-rendered output
Actionable explanations for every check, not just pass/fail
Free, instant, no account required

Use Cases

SEO audit without software

Why Use Irreva for SEO Checker — Analyze On-Page SEO Free Online?

Identify critical SEO issues before publishing or after a site change

See exactly what Google's crawler sees — not browser-rendered output

Actionable explanations for every check, not just pass/fail

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

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