Network Capacity Tester
Saturate your network by streaming large files to test stability and capacity.
From Our Blog
Why Your Internet Feels Slow (and How to Test It)
Discover the common culprits behind a sluggish connection, from ISP throttling to network congestion, and learn how tools like ours can help you diagnose the problem.
Read More →Understanding Network Bandwidth vs. Speed
Bandwidth and speed are often used interchangeably, but they mean very different things. We break down the technical details and explain why consuming bandwidth is a valid testing method.
Read More →The Role of Concurrent Connections in Testing
Why does our tool let you choose concurrent streams? Learn how multiple connections can saturate your line to accurately simulate heavy usage and test your network's true capacity.
Read More →How It Works
This tool helps you test your internet connection's stability and maximum capacity by continuously downloading large files. These files are streamed directly into your browser's memory and then discardedâthey are never saved to your device.
By opening multiple concurrent download streams, you can simulate a high-load environment. This is useful for checking if your connection remains stable under heavy use, like during 4K streaming, online gaming, and large file transfers all at once. The "Stop Test" button immediately ceases all download activity.