Is API Tester free to use?

Yes, API Tester is completely free to use on Toolsuz with no limitations or hidden costs.

Do I need to sign up to use API Tester?

No, you don't need to create an account or sign up. All tools work instantly without registration.

Yes, all processing happens locally in your browser. Your data is never uploaded to our servers.

Code & Programming

Test REST API endpoints

Instant Results

100% Private

No Signup

Free Forever

The API Tester tool is a powerful and easy-to-use tool designed to simplify your work.

Minify or beautify HTML

Minify or beautify CSS

Minify or beautify JavaScript

Format and validate JSON