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HTML5 Speedtest

No Flash, No Java, No Websocket, No Bullshit.

This is a very lightweight Speedtest implemented in Javascript, using XMLHttpRequest and Web Workers.

Forked from adolfintel/speedtest to remove unnecessary features and implement Go backend for use at bgp.wtf.


All modern browsers are supported: IE11, latest Edge, latest Chrome, latest Firefox, latest Safari.
Works with mobile versions too.


  • Download
  • Upload
  • Ping
  • Jitter

Server requirements

  • A machine that can run Go code.


go build -o srv github.com/q3k/speedtest/backend


Support the original developer: Donate with Liberapay
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Copyright (C) 2016-2019 Federico Dossena

Copyright (C) 2019 Serge Bazanski

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this program. If not, see https://www.gnu.org/licenses/lgpl.