Free
$0
- All five utilities
- Unlimited basic use
- Local browser processing
API utilities for developers and IT professionals
REST API Tester Online
Test REST API endpoints online with GET, POST, PUT, PATCH, and DELETE requests. Add headers and JSON bodies and inspect API responses in your browser.
Most processing happens locally in your browser.
GET /v1/users/42
{
"id": 42,
"name": "Arnaldo",
"plan": "pro",
"status": "active"
}Workspace
Five tools, one interface
REST API Tester
Some APIs block browser requests through CORS. Never paste production secrets into a third-party tool.
Your account
Save workspaces across devices
Simple pricing
Start free. Upgrade when you need more.
Pro
$5/month
- Saved workspaces
- Request history roadmap
- Environment variables roadmap
- Priority feature requests
Learn more
How to use REST API Tester Online
Choose an HTTP method, enter an endpoint URL, add optional request headers and a body, and send the request from the browser. The workspace displays the response status, request duration, and response body so you can inspect an endpoint quickly.
Use GET to retrieve resources, POST to create or submit data, PUT or PATCH to update resources, and DELETE when an API supports removal. JSON request bodies can be prepared with the JSON Formatter before testing an endpoint.
An online REST API tester is useful for debugging endpoints, learning HTTP APIs, validating integrations, reproducing requests, checking development services, and investigating unexpected API responses without building a temporary client application.
Browser security rules still apply. If an API does not allow your browser origin through CORS, the browser may block the request. Avoid entering production credentials or sensitive secrets into tools you do not control.
Can I test a REST API online?
Yes. Enter an endpoint, select an HTTP method, add any required headers or body, and send the request from the browser.
Which HTTP methods are supported?
The tester supports GET, POST, PUT, PATCH, and DELETE requests.
Can I send JSON in the request body?
Yes. Methods that accept a request body can be tested with JSON or other text payloads supported by the target API.
Why was my API request blocked?
Some APIs restrict browser requests using CORS. The API server must allow requests from your browser origin.
Is this a replacement for Postman?
It is designed for quick browser-based API testing. More advanced workflows may still benefit from a full API development platform.