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REST Easy is a Firefox add-on that provides a full-featured REST client in the browser. It is still a work in progress, but the features currently implemented include:

  • support for all common HTTP methods
  • parameter editor supporting both application/x-www-form-urlencoded and multipart/form-data
  • ability to specify arbitrary data for POST and PUT requests
  • preview of HTML both as text and rendered in the browser
  • syntax highlighting for HTML, JavaScript/JSON, and XML

Features planned for upcoming releases include:

  • tools for saving and loading requests

Add to Firefox


Using REST Easy is simple: just click the toolbar button to open a new tab.


Building the Add-on

The add-on uses an extremely simple Makefile to build the XPI. Simply open a terminal in the directory containing the source code and run:


Get Involved

Interested in helping out with REST Easy development? We'd love to have you contribute! Just fork this repository, make your changes, and submit a pull request. Here are some of the areas we would like some help in:

  • JavaScript programmers: the following features are still in the planning stages:

    • loading and saving requests
    • preview of more file types
    • ability to specify a file to upload with a POST or PUT request
  • Theme designers: our current theme is written in LESS and compiled on-the-fly to CSS in the browser. Although the current theme is usable, we welcome improvements.

  • Localization: the add-on has already been translated into a few languages, but we're always excited to add support for more languages. All translations for other languages are welcome.