API Tester

Send API requests and test responses instantly. Supports GET, POST, PUT, DELETE, headers and body.

API URL

Method

Headers (JSON)

Body (JSON)

Response

- Status

- Time (ms)

✔ Runs in browser · ✔ No data stored · ✔ Free API tester

How to Use API Tester

Enter API URL or generate one using Fake API Generator or Fake API Server .
Select request method.
Add headers and body if needed. You can prepare JSON using Random JSON Generator .
Format request data using Code Formatter .
Click Send Request and inspect response. You can analyze output using Word Counter or Keyword Counter .

API tester allows developers to debug API calls without Postman. You can test REST APIs directly in your browser.

Missing a feature or have an idea to improve this tool? Let me know — I read every suggestion.