HTTP Header Analyzer

HTTP Header Analyzer

Paste any HTTP request or response headers for instant analysis. Categorizes headers by type, explains each header’s purpose, validates CORS and caching configurations, flags deprecated headers, and provides performance optimization suggestions.

How to Use

Paste HTTP headers (key: value format, one per line) into the input field. The tool automatically parses, categorizes, and analyzes every header with color-coded results grouped by category.

Features

• Header Categorization – Groups headers into Security, Caching, CORS, Content, Authentication, Connection, and Custom categories
• Header Explanations – Clear descriptions of each header’s purpose and current value assessment
• Cache-Control Analysis – Breaks down Cache-Control directives with optimization suggestions
• CORS Validation – Checks Access-Control-* headers for proper configuration
• Deprecated Header Detection – Flags outdated headers like Pragma and X-UA-Compatible
• Performance Suggestions – Recommendations for compression, caching, and connection optimization
• Standard vs Custom Detection – Identifies non-standard and custom headers
• Example Templates – Pre-loaded header sets for typical responses, API responses, and CDN responses