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.
Frequently Asked Questions
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.
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.
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.
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.
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.
No — it analyzes a single URL at a time. Paste the exact page you want to check.
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
Why Use Irreva for SEO Checker – Analyze On-Page SEO Free Online?
Frequently Asked Questions
What is the difference between on-page and off-page SEO?
On-page SEO covers factors you control directly on your page — title, headings, content, meta tags, speed, and structured data. Off-page SEO covers external signals like backlinks and brand mentions. This tool checks on-page factors only.
What SEO score should I aim for?
Aim for 80 or above. Scores in the 80–100 range mean the technical on-page fundamentals are solid. Below 50 usually indicates missing critical elements like a title tag, H1 heading, or HTTPS.
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