SEO Tools
Security Headers Checker
Use Security Headers Checker to audit HTTP security headers for a URL and generate fix code for missing headers. The tool produces a security headers report with grades, explanations, and copy-ready fix snippets. Sends your URL to our server to fetch response headers. No page content is stored.
Features
- Browser-only HTML analysis. No upload
- Pass, warn, fail, and info status labels
- Export report as JSON
- Sends your URL to our server to fetch response headers. No page content is stored.
How to use it
- Paste the HTML source of a page into the input panel.
- Click Check HTML to run the analysis in your browser.
- Review the report sections.
- Export as JSON or copy the summary.
Use cases
- Audit on-page SEO before publishing or updating a page
- Check social sharing metadata before a campaign
- Verify heading structure and schema markup after a CMS change
Limitations
- JavaScript-rendered content is not evaluated. Only the static HTML response is analysed.
- Paste the raw HTML source. Relative paths may not resolve correctly without the original base URL.
- Sends your URL to our server to fetch response headers. No page content is stored.
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Use toolFrequently asked
Does Security Headers Checker upload my data?
Your file or text is processed in your browser and is not uploaded.
What does Security Headers Checker check?
It produces a security headers report with grades, explanations, and copy-ready fix snippets. Sends your URL to our server to fetch response headers. No page content is stored.
Does this replace Google Search Console?
No. This tool reads static HTML and provides a quick informational check. For authoritative indexing data and crawl reports, use Google Search Console.