Packet Loss Test


This site uses cutting-edge WebRTC technology to check your Internet connection's packet loss, latency, and latency jitter in your browser for free. These problems can all be caused by various similar issues, which hopefully you will be able to find and fix using this easy way to test for them.

This complements a traditional speed test, which only measures the raw speed and latency. Speed is important for general Internet browsing, downloading files, and video streaming, but it is not a very good measure for performance for more communicative activities.

Activities like gaming and voice chat usually do not need much raw bandwidth, but they need prompt and reliable responses. These programs also do not usually resend information if it fails to get there, so if packets get lost in transmission, they are gone for good, which can also have a significant impact.

Up until recently, web browsers have not been able to test this, as they have always retried everything until it works. Recently however, WebRTC has been added to modern browsers, finally enabling this type of test. I could not find another site that has implemented this type of test, so I made one. This makes it very easy for anyone to test their packet loss (also known as "packet drop") without downloading a more complicated tool like iPerf. Now, you can just hit "Start Test" below, and then interpret your results.

Also, you can read a bit more about the site at the dedicated About and Technology pages.

VoIP Packet Loss Test

VoIP calls are increasingly replacing traditional phone calls. These calls use your Internet connection to place a phone call instead of a local phone line. While this has many benefits, it also increases the need to ensure you have a stable, reliable Internet connection. Too often people switch to a VoIP system without understanding what they are doing or why the quality of calls may degrade from time to time thereafter.

VoIP calls are possibly the biggest beneficiaries of reliable connections over fast connections. If you are streaming a movie, you can have high packet loss and latency and not care if your connection is fast enough, but for a VoIP connection quality is everything. VoIP calls typically only use roughly 14 KBps of bandwidth, but even small amounts of packet loss can make them very frustrating and possibly unusable.

This tool simulates an VoIP call and measures the quality of your connection to help you diagnose issues and know exactly how good your connection is.

Test Settings
10 Seconds

Using: Server

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