DEVELOPER
Shadow API Load Tester
Stress test your APIs instantly. Configure RPS and duration, and watch a real-time latency chart populate as your browser hammers the endpoint.
Shadow API Load Tester
Browser-Based Stress Testing
Most load testing tools require complex CLI setup or paid subscriptions. Shadow API Load Tester uses your browser's fetch engine to send high-concurrency requests to your API, giving you instant visual feedback on latency spikes and rate limiting (429s).
How to use this tool
- Enter your API endpoint URL.
- Select the HTTP method.
- Configure the Requests per Second (RPS) and test duration.
- Click Start and monitor the real-time latency charts.