HTTP & API Tools
Free browser-based tools for building, debugging, and inspecting HTTP requests. Includes cURL examples, header references, and method documentation.
Tools
API Request Builder
Build & test HTTP requests visually
cURL Generator
Generate & parse cURL commands
HTTP Header Viewer
Inspect HTTP response headers
HTTP Header Diff
Compare two sets of HTTP headers
HTTP Status Lookup
Look up HTTP status codes & fixes
CORS Checker
Check CORS headers for any URL
Redirect Checker
Follow & inspect redirect chains
Cookie Parser
Parse & build Set-Cookie headers
URL Query Parser
Parse & build URL query strings
URL Encoder / Decoder
Encode & decode URL components