Fiddler Tutorials & Guides

A step-by-step Fiddler tutorial on modifying HTTP headers — manual edits, AutoResponder, FiddlerScript, breakpoints, and troubleshooting for HTTP debugging.

Step-by-step Fiddler setup guide covering installation, HTTPS decryption, filtering, verification, and workspace customization for effective HTTP debugging and fiddler proxy configuration.

Master Fiddler CLI for automated HTTP debugging, HTTPS decryption, headless capture, and CI/CD integration—step-by-step commands, scripts, and troubleshooting.

Learn how to capture traffic from specific domains in Fiddler — including HTTPS decryption, host filtering, CustomRules.js, and troubleshooting tips for HTTP debugging.

Learn how to test GraphQL APIs using Fiddler: capture, inspect, modify, and replay queries with HTTPS decryption, AutoResponder, and Composer. A practical fiddler tutorial for developers and QA engineers.

Step-by-step guide to configure Fiddler as system proxy for full HTTP/HTTPS traffic inspection, including HTTPS decryption, troubleshooting, and cross-tool validation.

A complete, step-by-step Fiddler tutorial for decrypting HTTPS traffic — covering certificate trust, mobile setup, troubleshooting, and TLS 1.3 support.

Learn how to integrate Fiddler with Selenium WebDriver for real-time HTTP debugging, HTTPS decryption, and automated API validation — a must-know fiddler tutorial for QA engineers.

Learn how to read and interpret Fiddler's Timeline and Waterfall charts for HTTP debugging, performance analysis, and HTTPS decryption validation.

Step-by-step Fiddler tutorial for iOS mobile app debugging: configure proxy, install & trust certificates, handle HTTPS decryption, and troubleshoot common issues.