HTTP Header Checker
HTTP Header Checker lets you inspect response, caching, compression, content, CORS, and security headers. See the live values and plain-language findings for one URL.
- check_circlePublic pages only
- check_circle1 global credit
- check_circleNo setup required
Public webpages only
Run HTTP Header Checker
- 01Add source
- 02Set options
- 03Review result
Analyze public content you own or have permission to inspect. Failed and cancelled runs automatically return reserved credits.
Complete
Results
What HTTP Header Checker does
The HTTP header checker sends a safe request to a public URL and displays the response headers it receives. Findings cover response type, caching, compression, content handling, CORS, and common browser security headers.
The report keeps the raw header name and value beside each explanation. This lets developers verify the live server response without treating a generic checklist as a substitute for the site's actual security model.
What you can do with HTTP Header Checker
Useful fields from the start
Review response headers, security findings, caching, content and compression in one organized result.
Results you can inspect
See the returned rows, findings, and available source details before you download anything.
Export as CSV, XLSX, JSON
Keep the result in the format that fits your spreadsheet, audit, content, or development workflow.
Bounded website processing
Analyze public sources with a clear cost shown before the run and a maximum of 25 source pages.
Where HTTP Header Checker fits
Perfect for
- checkConfirm caching after a CDN change
- checkCheck whether compression is advertised
- checkReview security headers on a new app
- checkDebug content type or CORS behavior
What you get
- checkResponse headers
- checkSecurity findings
- checkCaching
- checkContent and compression
How to use HTTP Header Checker
- 01
Enter the public URL
Use the exact page or resource whose response headers you need.
- 02
Review raw values and findings
Check response, cache, compression, content, CORS, and security sections.
- 03
Update the serving layer
Change the application, web server, or CDN configuration and request the URL again.
What to know before you run it
- infoHeader needs differ between documents, APIs, fonts, and media files.
- infoA missing header is not automatically a vulnerability.
- infoThe result reflects one live response and may vary by region or cache state.
ExtractPics processes public content only. Use pages and files you own or have permission to inspect, and follow the source website's terms.
Questions about HTTP Header Checker
If your question is not covered here, send us a message and include the page, file, or result type you are working with.
Which security headers are checked?
Can it check API responses?
Does passing every header check make a site secure?
Ready when you are
Run HTTP Header Checker
Analyze a public page to inspect response headers and security findings.
Open the tool