Free Developer Tool
HTTP Header Analyzer
Understand HTTP headers in plain English. Get security recommendations and debugging tips.
Inspect headers in real requests
DevConsole shows you all HTTP headers in your network requests with timing details
Paste HTTP Headers
Analysis
Content-Typeapplication/json
Indicates the media type of the resource (e.g., text/html, application/json)
Cache-Controlmax-age=3600
Directives for caching in browsers and CDNs
Access-Control-Allow-Origin*
Controls which origins can access this resource (CORS)
Security Headers Found
No security headers detected
Missing Security Headers
- ⚠ Content-Security-Policy
- ⚠ Strict-Transport-Security
- ⚠ X-Frame-Options
- ⚠ X-Content-Type-Options
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