Browse HTTP protocol and traffic debugging guides.
Capture & Analysis
- HTTP Sniffer for APIs: Capture and Analyze
Explore how HTTP sniffers differ from packet sniffers and proxy tools
- HTTP and HTTPS Traffic: Capture, Monitor, and Debug
Learn how to capture, filter, compare, and analyze HTTP traffic for debugging
- Debug Apps That Ignore Proxy Settings
See HTTP requests and responses exactly as your app sends and receives them — with no proxy in between
- HTTP Analyzer: Capture API Requests From Any App
Learn how HTTP Debugger captures, inspects, and troubleshoots traffic beyond DevTools
- HTTP Tracer for Windows: Trace and Debug HTTP Requests
Learn how to trace API failures through headers, bodies, status codes, and redirects
- HTTP Viewer: Inspect Requests, Responses, and Headers
Avoid common mistakes when inspecting HTTP traffic with a 7-step API debugging workflow
- HTTP Tools for Debugging: CLI vs Proxy vs Sniffer
Review the HTTP toolbox needed for API testing, web debugging, and traffic capture
- HTTP Debugging: How to Debug HTTP Requests and Traffic
Explore common HTTP debugging scenarios with request and response examples
HTTP Reference
- HTTP Protocol: How It Works, Methods & Versions
Understand HTTP requests, responses, methods, status codes, and how HTTP/1.1, HTTP/2, and HTTP/3 differ
- HTTP Request: Format, Methods, and Examples
Learn how HTTP methods affect caching, retries, idempotency, and API behavior
- HTTP Headers: Full List, Format, and Examples
Understand how HTTP headers control API authentication, caching, CORS, and security
- HTTP POST Request: Method, Format, and Examples
Understand how POST payloads, response codes, and idempotency affect API design
- HTTP Response: Structure, Status Codes, and Format
Read status lines, decode status codes, and inspect response headers
- HTTP Error 503: How to Debug and Fix
Understand what HTTP 503 means and how it differs from 502 and 504