API Tester - REST Client Testing Tool icon

API Tester - REST Client Testing Tool

by ASOTools · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Free REST API Tool, Use it to develop, test, debug RESTful APIs and HTTP request & REST services in Google Chrome Web Store.

Users
10K
0 in 30 days
Rating
2.7 / 5
unchanged in 30 days
Ratings
9
0 in 30 days
Store rank
#9,635
#8,312 among extensions
Version
1.4.0
updated 22 Apr 2023

Users

monthly, 3 years
3005,15010KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 10,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
049Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 9 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 Client Testing Tool

This is simple REST Client. Use it to develop, test, debug RESTful APIs, HTTP APIs and and easy-to-use UI. This has a number of powerful features than postman... Favorites: - Save favorite requests (including headers, payload etc.) and re-use them with the click of a button. - Import/Export favorites. - Your favorites are automatically synced with your Google account and are not tied to a single machine. History: - View all your previous requests and responses. - Easily run them again. - Easily filter out the requests you're not interested in. Custom Headers: - Choose from a large range of existing request headers. - Create and save your own custom request headers. More... - View the request response in beautiful syntax highlighting (including JSON, XML, HTML and CSS). - See how long each request took to complete. - Supports GET, POST, PUT and DELETE request methods. Custom request methods can also be added by the user. - HTTP Basic Authentication. - Responsive Design. - Dark Mode. - 100% Free. No strings attached. Note on Extension Permissions: The badly named "Read and change all your data" permission is required to send a request to any domain. This does not access or use your data in any way.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months0+0.0%00.00
1 year0+0.0%+1−0.08

Chrome Web Store search rankings

Where API Tester - REST Client Testing Tool appears when people search the store, with the 30 day change
Search phrasePosition30 days
rest#50
testing#28+9

Version history

7 versions recorded
1.4.021 Apr 2023
1.3.217 Apr 2023
1.3.116 Apr 2023
1.3.026 Mar 2023
1.2.020 Mar 2023
1.1.04 Nov 2022
1.0.027 Oct 2022

Details

Category
Developer Tools
First seen
27 Oct 2022
Size
426 KB
Languages
en
Pricing
Free
Support
ecomscrapy.com
Extension ID
gjpgfhjgdajmdhialdclpkjmfkhbdchl

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
storagealarmsunlimitedStoragedeclarativeNetRequest
Site access
https://*/http://*/

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