API Tester - REST API Tester Client FREE

by 99extensions · 99extensions.io · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Develop, test and debug REST APIs.

Users

1,000

0 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#30K

#26K among extensions

Version

1.0.1

updated 5 Dec 2024

Users

monthly, 3 years

Latest, 15 Oct 2026: 1,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About API Tester - REST API Tester Client FREE

Welcome to API Tester - REST API Tester Client FREE a tool for developing, testing and debugging REST APIs. #1 The API Tester includes the following main functionality: 1. Send requests and display responses API Tester - REST API Tester Client FREE can handle GET, PUT, PATCH, DELETE, HEAD, OPTIONS and Custom requests. In addition custom headers and basic authentication can be added to the requests. 2. Manage favorites To make debugging life easier, the API Tester allows to store and manage favorite requests. These favorites can also be imported and exported. 3. Request history By default all requests are stored within the request history. Please rest assured that the API Tester will not store any requests made from an incognito window. #2 FAQs: 1. Which permissions are needed to use our API Tester - REST API Tester Client FREE extension? Only storage permissions are needed, these permissions are then used to store favorite and historic requests. 2. Where do I get help? The API Tester extension has a dedicated Help section which describes the most important functionality.