RESTer Firefox

RESTer

By: Jan
A REST client for almost any web service.

Features & Capabilities

RESTer is a powerful REST client Chrome extension designed for developers and testers to perform HTTP requests using any method, custom URLs, headers, and bodies. Users can save favorite requests, organize them into collections, and review a comprehensive history of both requests and responses. The extension supports various authentication methods, including Basic and OAuth2, and allows the use of placeholders and keyboard shortcuts for efficient workflow. RESTer ensures privacy by storing all data locally on the user's machine. It requires permissions to access and modify requests only within its own tabs to maintain user security and enhance functionality. Whether testing APIs or exploring web services, RESTer offers an intuitive and feature-rich interface to streamline your HTTP request management.

User Growth & Download Statistics

Manifest V2 Add-on Developer Tools Programming
By:
Jan
Daily users:
10,461 139
Rating:
4.82
(108)
Version:
4.15.0 Last updated: 2026-05-11
Version code:
6242987
Creation date:
2015-08-17
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Size:
2.18MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-20
Compare stats and ranking:

Other platforms

Chrome
RESTer (v4.15.0)
10,000 4.74 (23)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Jan
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/rester/
Website:
https://github.com/frigus02/RESTer/issues

User Reviews

Reviews are overwhelmingly positive: users praise the add-on’s intuitive GUI, reliable REST functionality, and suitability as a primary workhorse tool. There are isolated reports of installation, encoding, and POST issues, but none of those problems appear across multiple reviews, so no consistent technical complaint emerges.
Pros
  • Intuitive, easy-to-use GUI praised by multiple users
  • Solid functionality — performs the expected REST tasks reliably
  • Frequently called the best/most useful REST plugin and suitable as a workhorse
  • Widely well-liked and recommended by users
Cons
  • No single technical problem was reported by multiple reviewers; no widespread cons found
Recent reviews
easy and great
by Fi*****, 2026-04-16

by Da*****, 2026-03-06

by Se*****, 2025-11-05
View all user reviews ›

Is RESTer Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

RESTer requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

RESTer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
  • Medium **** ********* *** ****** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Best RESTer Alternatives

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