HTTP Headers Parser
Parse raw HTTP request and response headers into clean JSON key-value objects.
CORS Configuration
About HTTP Headers Parser
The HTTP Response & Request Headers Parser decomposes raw HTTP header blocks into structured key-value tables and JSON objects with security header audits (CSP, HSTS, X-Frame-Options, CORS) and caching directive analysis.
How to Use HTTP Headers Parser
Step 1
Paste raw HTTP header text from browser DevTools Network tab or cURL output.
Step 2
Inspect the decomposed header table and security audit checklist.
Step 3
Click "Copy as JSON" or "Export Headers".
Practical Use Cases for HTTP Headers Parser
Security Header Auditing & Hardening
Verify the presence and validity of critical web security headers (`Content-Security-Policy`, `Strict-Transport-Security`, `X-Content-Type-Options`) on web servers.
CDN Caching & Proxy Debugging
Analyze `Cache-Control`, `ETag`, `Age`, and `CF-Cache-Status` headers from Cloudflare, CloudFront, and Fastly CDNs.
Input & Output Examples
Parsing Raw HTTP Response Headers
HTTP/1.1 200 OK\nContent-Type: application/json; charset=utf-8\nCache-Control: max-age=3600, public
{\n "Content-Type": "application/json; charset=utf-8",\n "Cache-Control": "max-age=3600, public"\n}Key Features & Performance
- ✓Parses raw HTTP/1.1 and HTTP/2 response/request header blocks.
- ✓Audits security headers with grade ratings (A+ to F).
- ✓Translates `Cache-Control` directives into plain-English TTL durations.
- ✓100% Client-Side parsing.
- ✓1-Click Copy parsed headers as JSON or cURL headers.
Key Terminology & Definitions
Content Security Policy (CSP)
An HTTP header that restricts resources (scripts, images, stylesheets) the browser is allowed to load for a page to prevent XSS attacks.
HSTS (Strict-Transport-Security)
A header that forces modern web browsers to connect to the domain using only secure HTTPS connections.