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loader.io

Published and supported by SendGrid Labs


Amazingly Simple Cloud-Based Load Testing for Your Apps

Loader.io by SendGrid Labs is a simple cloud based load testing tool that allows you to stress test your web applications and APIs with thousands of concurrent connections. This tool was developed to reduce the cost and complexity of traditional load testing scenarios which required an enormous amount of time, expertise and money to execute.

Loader.io makes it amazingly easy and cost effective to run continuous load tests against your application so that you can optimize your performance while focusing on your core business.

All you have to do is add your application to loader.io, run a load test and watch the load test in real time.

We simulate connections to your application for the duration you specify and make it simple for you to monitor and share the results with your team.

The best part is that it’s free to test up to 10,000 clients per test and affordable pro plans for larger client tests. All you need is a valid email address and a server to test. To create a free test, simply visit loader.io

Run UNLIMITED Tests

Avoid the risk of user abandonment, loss of revenue, poor user experience and a negative brand reputation by consistently load testing your web applications. Loader.io makes it easy by offering unlimited tests per month for a low flat rate – AWESOME!

Simple Pricing & Custom Plans

Our pricing model is so simple, you can enable add-on features when you need them and disable them on months when you don't. All of our plans and add-ons are contract-free. Need a custom plan? No problem, we can handle that too. Just shoot us an email outlining your needs.

Team Collaboration

Working in teams is fun! With our Pro plan, you and your team can collaborate on application testing together.

Use Our Free Plan FOREVER

loader.io is 100% FREE to test up to 10,000 clients per test and affordable pro plans for larger client tests. All you need is a valid email address and a server to test. To create a free test, simply sign up.

Plan Features:

Free Plan:

  • 10,000 clients/test
  • 1 hostname
  • 1 min tests
  • 2 URLs per test

Pro Plan:

  • 100,000 clients/test
  • Unlimited hostnames
  • Unlimited 10 min tests
  • 10 urls per test
  • Advanced analytics
  • Concurrent tests
  • Team features

The loader.io plugin extends the power of New Relic's monitoring capabilities.


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  2. Step Two

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