End-to-end load testing for websites
Simulate browser and API traffic, monitor end-to-end performance, and catch regressions early to keep your website fast and reliable.
Trusted by more than 50,000 customers globally
Why Choose Load Testing on BrowserStack?
BrowserStack Load Testing cuts setup and maintenance overheads, generates real-world load at scale, and delivers unified frontend–backend performance insights for faster debugging.
Simulate real-world traffic at scale
- Simulate up to 1,000 concurrent virtual users to test your system under high traffic.
- Distribute tests across load zones to measure performance in different geographical locations.
- Execute tests on fully managed infrastructure without any setup, provisioning, or maintenance.
Unified reporting with actionable insights
- Correlate front and backend metrics in one view to identify slow pages, errors and high response times.
- Monitor real-time metrics during execution to detect anomalies, and speed up triage.
- Access detailed logs and error traces to debug issues instantly.
Start load testing within your CI/CD workflow
- Use existing functional test scripts to get started in minutes— no rewrites, no new frameworks, no learning curve.
- Run both browser and API load tests in CI to validate end-to-end performance with every build.
- Trigger load tests from your CI pipeline on every commit to catch issues early.
Over 50,000 companies trust Browserstack
Piotr Kowalczyk @piotrek_web Thank you god for @browserstack <3 Css magic...#Apple #testing #programming #FrontEnd 
Luis H. Ball Jr. @luqven @browserstack Local appreciation tweet 🥰 Browser’s refusal to ship meaninful JS feature flags makes it necessary to be able to test on older versions.Local makes that a breeze ⛵. 
Fatih Battal @fatihtweeting @browserstack I love you😘 Nothing more. That's it. 
Kevin Basset @kvnbsst Big fan of @browserstack for cross-browser testing. If you're building a #PWA, it's an absolute must-have. #nocode #iphone #safari #web #browser 
Rajendra Kadam @rajendra_ak Use @browserstack to automate tests on many more devices than those in your farm. 
Code With Caen @CodeWithCaen Trying out @browserstack and am completely blown away. Currently playing around with visual testing using Percy. Super excited I got a sponsored #opensource plan too! 
