HTTP Header Parser

Analyze and understand HTTP headers with detailed explanations for each header.

HTTP Headers

Enter HTTP headers in "Name: Value" format, one per line.

Sample HTTP Headers

Request Headers

Host: api.example.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
Accept: application/json
Accept-Language: en-US,en;q=0.9
Accept-Encoding: gzip, deflate, br
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
Content-Type: application/json
Origin: https://example.com
Referer: https://example.com/dashboard

Response Headers

HTTP/1.1 200 OK
Date: Mon, 27 Jan 2025 10:30:00 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 1234
Cache-Control: max-age=3600
ETag: "abc123"
X-Request-Id: req-12345
X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 999
Access-Control-Allow-Origin: *
Strict-Transport-Security: max-age=31536000; includeSubDomains