HTTP 헤더 파서
Enter a URL to fetch and analyze its HTTP response headers
About HTTP Headers Parser
What is an HTTP Headers Parser?
An HTTP Headers Parser is a tool that helps developers inspect and understand the metadata sent by web servers in HTTP responses. Headers contain critical information about caching, security policies, content encoding, cookies, server configuration, and more.
Common Use Cases
- Debugging API responses and understanding server behavior
- Checking cache configuration and CDN settings
- Auditing security headers (CORS, CSP, HSTS, X-Frame-Options)
- Analyzing compression and content encoding
- Troubleshooting redirect chains and cookies
- Understanding rate limiting and server capabilities
- Educational purposes for learning HTTP protocol
How to Use
- Enter a valid URL (must start with http:// or https://)
- Click “Parse Headers” to fetch the response
- View headers organized by category in the table
- Switch to JSON view for raw output
- Copy or download headers for further analysis
Header Categories
General Headers: Date, Connection, Cache-Control
Response Headers: Server, ETag, Location, Vary
Content Headers: Content-Type, Content-Encoding, Content-Length
Security Headers: HSTS, CSP, X-Frame-Options, Referrer-Policy
CORS Headers: Access-Control-Allow-Origin, Access-Control-Allow-Methods
Caching Headers: Cache-Control, ETag, Expires, Last-Modified
Important Security Headers
- Strict-Transport-Security (HSTS): Forces HTTPS connections to prevent man-in-the-middle attacks
- Content-Security-Policy (CSP): Controls which resources can be loaded, preventing XSS attacks
- X-Frame-Options: Prevents clickjacking by controlling iframe embedding
- X-Content-Type-Options: Prevents MIME type sniffing
- Referrer-Policy: Controls how much referrer information is shared
Tips for Interpretation
- 200-299 status codes indicate success
- 300-399 status codes indicate redirects
- 400-499 status codes indicate client errors
- 500-599 status codes indicate server errors
- Look for cache-control and expires headers to understand caching behavior
- Check for security headers to audit website security posture
- Compression headers (content-encoding) show if responses are compressed
- CDN-specific headers (cf-*, x-cache) indicate CDN usage