Why Use Our Free API Tester?
Test REST APIs directly from your browser. Send GET, POST, PUT, DELETE requests. As a developer, dealing with complex formatting, debugging, and data processing can be incredibly tedious. Our free online API Tester removes the friction from your workflow, allowing you to instantly process your data without installing heavy software or risking your proprietary code on insecure servers.
Features of Our Free API Tester
- Instant Local Processing: All calculations and parsing happen instantly in your web browser.
- 100% Privacy Guarantee: Your code and API payloads are never uploaded to our servers.
- No Installation Required: Access the tool instantly from any modern web browser.
- Completely Free: No premium features, no subscriptions, no paywalls.
How to Use Input Your Data Online Free
Using Input Your Data is straightforward:
- Initialize Input Your Data: Access the interface and enter your specific parameters to begin the process.
- Configure Options: Select any necessary output formats or preferences tailored to your task.
- Execute Process: Run the tool to Test REST APIs directly from your browser. Send GET, POST, PUT, DELETE requests with custom headers and body payloads.
- Review Output: Once processing is complete, export or copy the generated results directly to your clipboard.
What is an API Tester?
An API (Application Programming Interface) Tester is a tool that allows developers to send HTTP requests to servers and view their responses. It simulates the behavior of a frontend application or a backend service communicating with an API.
Our web-based API tester lets you send standard requests (GET, POST, PUT, DELETE, PATCH) right from your browser, making it incredibly fast to verify endpoint functionality.
Important Note on CORS
Because this tool runs inside your browser via the Fetch API, it is subject to Cross-Origin Resource Sharing (CORS) policies.
If you attempt to request an API that does not explicitly allow your browser to fetch it from our domain, the browser will block the request for security reasons. To test such APIs, you will need a dedicated desktop client like Postman or Insomnia, or you must enable CORS on your backend server during local development.
Supported Methods
- GET: Retrieve data from the server.
- POST: Send new data to the server (requires a body).
- PUT: Replace existing data on the server.
- PATCH: Partially update existing data.
- DELETE: Remove data from the server.