Firefox Developer Edition 138.0 Beta 1

Firefox browser version optimized for web developers, offering advanced tools for modifying, debugging, and testing web applications.

Description


Firefox Developer Edition is a version of the Firefox browser optimized for web developers, offering advanced tools to modify, debug, and test web applications. It is separate from the regular, beta, and nightly Firefox versions and includes an independent profile, meaning it does not interfere with the data or settings of other Firefox installations. This is ideal for developers who need to test new features without affecting their normal workflow.

Main Features

  • Multiline console editor and WebSocket inspector for real-time analysis.
  • Tools like Inactive CSS and Font Panel for managing CSS styles, including visualization of unused CSS and font details.
  • Powerful JavaScript debugger with framework support and network request monitoring.
  • Responsive design mode for testing sites on emulated devices, as well as tools for performance optimization and memory leak detection.
  • Default dark theme, which enhances the visual experience during development.

Technical Specifications


Version: 138.0 Beta 1

Size: 69.31 MB

License: Free

Language: English

Platform: Windows

File Type: EXE

Developer: Mozilla

Category: Internet/Browsers

Last Update: 04/01/2025

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