It is a Chrome Browser extension developed at the University of Surrey as part of study to understand the performance of SpaceX's Starlink satellite network from users' persepctive.

About satPerf

SpaceX’s Starlink, OneWeb, Amazon Kuiper and many others are sending thousands small satellites in Low Earth Orbit (LEO) to offer very low latency, high capacity global broadband coverage.

Despite these promises, an in-depth study on the performance of these LEO satellite mega-constellations is still missing. In this project, we will conduct a user-centralized measurement campaign to assess and evaluate the performance of SpaceX’s Starlink broadband service.

Interested participants are encouraged to download the extension from here and contribute to the research study


Download and Upload Speeds

Webpage Load time

Top website performance

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Data Sharing

By default, the measured data will be stored locally (i.e., at your web browser) and you will be asked if you are willing to share the results. Specifically, the users will be given three different data sharing options:

  • Do not share my data

  • Share the measured performance metric as well as the user’s coarse-grained location (e.g., city)

  • Share the measured performance metric as well as the user’s fine-grained location (e.g., Lat/Long)

The extension is not collecting any personally identifiable data (e.g., name, email, etc). Any sensitive information (e.g., location), if collected, will be anonymized

Download satPerf

You can download the satPerf

Visit Download Page


Please use the contact icon on the bottom right

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