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Fiddler vs Tampermonkey

Professional comparison and analysis to help you choose the right software solution for your needs.

Fiddler icon
Fiddler
Tampermonkey icon
Tampermonkey

Fiddler vs Tampermonkey: The Verdict

⚡ Summary:

Fiddler: Fiddler is a free web debugging proxy which logs all HTTP(S) traffic between your computer and the Internet. It allows developers to inspect traffic, set breakpoints, and fiddle with incoming or outgoing data. Fiddler can be used to debug traffic from virtually any application that supports a proxy like web browsers, mobile apps, IoT devices, and more.

Tampermonkey: Tampermonkey is a popular browser extension that allows users to install userscripts - little bits of JavaScript that make changes to web pages. It works by injecting code into pages as they load. Tampermonkey makes it easy to customize web pages and automate tasks in the browser.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Fiddler Tampermonkey
Sugggest Score — —
Category Development Web Browsers

Product Overview

Fiddler
Fiddler

Description: Fiddler is a free web debugging proxy which logs all HTTP(S) traffic between your computer and the Internet. It allows developers to inspect traffic, set breakpoints, and fiddle with incoming or outgoing data. Fiddler can be used to debug traffic from virtually any application that supports a proxy like web browsers, mobile apps, IoT devices, and more.

Type: software

Tampermonkey
Tampermonkey

Description: Tampermonkey is a popular browser extension that allows users to install userscripts - little bits of JavaScript that make changes to web pages. It works by injecting code into pages as they load. Tampermonkey makes it easy to customize web pages and automate tasks in the browser.

Type: software

Key Features Comparison

Fiddler
Fiddler Features
  • HTTP/HTTPS traffic interception and inspection
  • Session analysis and manipulation
  • Breakpoints and conditional breakpoints
  • HTTPS traffic decryption
  • Automatic request resending
  • Scripting support
Tampermonkey
Tampermonkey Features
  • Allows installing userscripts to customize web pages
  • Supports major browsers like Chrome, Firefox, Safari, Opera, and Edge
  • Has a large library of existing userscripts to choose from
  • Can automatically update userscripts
  • Lets you control which sites scripts run on
  • Offers a dashboard to manage installed scripts

Pros & Cons Analysis

Fiddler
Fiddler

Pros

  • Free and open source
  • Powerful debugging features
  • Supports all major platforms
  • Large user community and documentation

Cons

  • Steep learning curve
  • Can slow down traffic
  • Potential privacy concerns with HTTPS decryption
  • Limited native mobile app support
Tampermonkey
Tampermonkey

Pros

  • Free and open source
  • Very customizable
  • Large userscript library
  • Easy to get started
  • Active development and support

Cons

  • Potential security risks from untrusted scripts
  • Can break web pages if scripts conflict
  • Requires some technical knowledge to create scripts
  • Not beginner friendly

Related Comparisons

Learn More About Each Product

Fiddler
Fiddler
Reviews, pricing & alternatives →
Tampermonkey
Tampermonkey
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