Free load testing service for APIs and websites.
Run distributed HTTP load tests from your browser or CI/CD in seconds. Start free, watch live results, set p95 and error-rate thresholds, compare runs, and validate APIs or websites without provisioning workers or maintaining a Grafana stack.
Start free load testing in minutes.
Create a test scenario, hit run, and watch live data immediately. Whether you start from the dashboard or CI/CD, LoadTester keeps free load testing simple for APIs, websites, and critical user flows.
Real test data, not a wall of logs.
Launch a free load test, watch the important numbers while it runs, then review a clean result your team can act on.
A free load testing service with the workflow teams need.
LoadTester is a modern load testing service for HTTP load testing, API load testing, and website performance checks. Start for free, then keep the workflows developers care about: live analytics, thresholds, CI/CD automation, and repeatable reports.
Instant distributed execution, no worker fleet required.
Start distributed load tests in seconds with a managed service instead of building worker fleets yourself. Your team focuses on results — LoadTester handles worker scaling, coordination, and execution flow.
Live analytics
Watch requests, latency, failures, throughput, and bottlenecks in real time while your test is running.
Smart auto-stop
Set failure or latency thresholds and automatically stop tests when things go sideways.
CI/CD ready · Webhooks · Slack & email alerts.
Run tests on every deploy, every PR, or every release candidate. Trigger alerts, workflows, and follow-up actions from your test results with simple webhook integrations.
Start load testing free, then scale when needed.
Use the free plan for lightweight API and website checks, then upgrade when you need higher scale, scheduled runs, CI/CD automation, alerts, and regression detection across your release workflow.
LoadTester is a modern free load testing service for API load testing, website performance testing, and repeatable release validation. Use the free plan for lightweight checks or upgrade for high-scale testing, CI/CD integration, scheduled tests, and performance regression detection.
Keep load testing close to every release without turning it into a maintenance project.
Trigger tests from your deploy pipeline, release workflow, or internal automation with one API call. Stop building your own load testing tools — use a managed load testing service and start testing.
Release validation
Run a quick performance check before launch to catch regressions while the change is still easy to roll back or fix. Prevent slow releases by testing every deploy.
API confidence
Load test API endpoints, authentication flows, and critical user journeys with the same simple workflow every time.
Team visibility
Share result links in chat, tickets, or release notes so everyone can see the run without digging through logs.
Launch scaling
Validate scaling before product launches. Find bottlenecks in APIs and web apps quickly.
Shared perf view
Give engineering and product teams a shared performance view everyone can act on.
Know your application limits before production does.
Start your first free load test today. Infrastructure, scaling, and orchestration are already handled.
Can I use LoadTester for free load testing?
Yes. LoadTester includes a free plan for lightweight API and website load testing, so you can run real tests before deciding whether you need higher limits, CI/CD automation, scheduled runs, or regression detection.
Is LoadTester a load testing service or a tool?
It is both: a browser-based load testing tool delivered as a managed load testing service. You get the testing workflow, live results, thresholds, and exports without managing workers, dashboards, or test infrastructure.
Can I start load testing free?
Yes. Create a free account, configure a target URL, choose VUs or RPS, and run your first free load test from the dashboard. You can upgrade later only when you need more scale or automation.
Why use a load testing service instead of building it yourself?
A dedicated load testing service saves time, removes infrastructure overhead, gives you live analytics, supports CI/CD workflows, and makes it easier to repeat tests consistently. Instead of stitching together scripts, workers, dashboards, and thresholds, your team can run tests and act on results immediately.
Do I need to manage any infrastructure?
No. LoadTester handles execution infrastructure, scaling, and coordination so your team can focus on results instead of setup.
Can I use it for API and website load testing?
Yes. LoadTester works for API load testing, website load testing, HTTP endpoint testing, authentication flows, and broader application performance testing use cases.
Can I use it from CI/CD?
Yes. You can trigger tests from your pipeline, automate checks, and use thresholds to catch regressions before release. See our guide on load testing in CI/CD for patterns and examples.
Do you support auto-stop?
Yes. Configure thresholds for latency, failures, or other conditions and stop tests automatically when those limits are crossed.
Guides for choosing a free load testing service or tool.
Start with implementation guides when you are designing a test plan. Use the alternatives section when you are comparing LoadTester with CLI tools, open-source tools, or another managed load testing service.
