Load Test Your Website for Free
Find out how many visitors your site can handle - before your customers do.
Siteload sends hundreds or thousands of concurrent requests to your website and shows how response time, throughput and errors change under load. Save every test, compare results after each change and get an email when your site goes down.
Load Testing and Monitoring in One Place
Stress test your website, see exactly when it starts to slow down and keep an eye on it after every release.
Website Load Testing
Send up to 20,000 requests with up to 1,000 concurrent connections and see the response time of every request
Learn more about load testing
Compare Test Results
Put several tests on one chart and see how each change to your code, cache or hosting affected the result
Uptime Monitoring
Automatic health checks as often as every 10 minutes with an email alert when your site stops responding as expected
Learn more about uptime monitoring
Why Load Test Your Website?
A website that is fast for one visitor can fall apart under a hundred. Load testing shows how your site behaves when real traffic arrives - and where it breaks first - so slow pages and errors never reach your customers.
Survive Traffic Spikes
A sale, a newsletter or a viral post can multiply your traffic in minutes. Load testing shows when your server, PHP workers or database start to slow down, so you can fix it before real visitors hit the limit.
- Know the real capacity of your website
- Find bottlenecks before launch
- Plan hosting upgrades with data
Keep Visitors and Search Engines Happy
Slow responses and errors under load push visitors away and hurt your Core Web Vitals and rankings. Measure response time under realistic concurrency, not just on an empty server.
- Stable response time under load
- Lower bounce rates
- Better crawlability and rankings
Protect Conversions and Revenue
Downtime and timeouts during peak hours cost the most. Run a load test after every release and let health checks email you when something breaks.
- Fewer lost orders and leads
- Confidence after each release
- Email alerts when your site goes down
Simple Price For All
Our goal is to help everyone build a faster, more reliable web. We believe that load testing and monitoring shouldn't be a luxury. We've built this tool to be accessible to everyone, from developers to small business owners. We may introduce premium features in the future, but our core tool will always remain free.
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Load Testing & Uptime Monitoring
Everything you need to know how your website behaves under load and when it goes down
- Unlimited Load Tests Up to 20,000 requests and 1,000 concurrent connections per test, with response time charts
- Uptime Monitoring Health checks as often as every 10 minutes with email alerts
- Save and Compare Results Track your performance over time to see the impact of your changes
- No Credit Card Required You can start using the tool immediately without providing any payment information