SpeedTest by OpenSpeedTest™ HTML5 Internet Speed Test.

Open Speed Test is a free and open-source HTML5 internet speed test tool that accurately measures download, upload, ping, and jitter speeds directly in any modern web browser without requiring plugins or apps.

🚀 Overview

OpenSpeedTest is a lightweight, client-side speed testing tool built with vanilla JavaScript and HTML5 Web APIs, providing precise network performance metrics like download/upload speeds, ping latency, and jitter for connection stability.

It solves the problem of inaccurate or plugin-dependent speed tests by delivering real-world bandwidth measurements from 1 Kbps to over 10 Gbps, helping users diagnose issues with home WiFi, office networks, or ISPs.

Built for everyday internet users, network administrators, and developers who want to embed speed tests in their sites or self-host for private networks. The creators developed it to offer a reliable, no-nonsense alternative to commercial speed tests, emphasizing accuracy and cross-device compatibility since 2013.

✨ Key Features

Accurate real-time measurement of download/upload speeds (Mbps), ping (ms), and jitter for stability assessment
Interactive graphs showing network traffic during tests
Works on any device and browser (phones, TVs, PCs) without installations or Flash/Java
Embeddable widget for websites/apps using public servers
Self-hostable servers via Docker, Android/iOS/Windows apps for local network testing
Optional: Custom configurations via open-source code

🛠 Tech Stack

Frontend: Vanilla JavaScript, HTML5 Web APIs
Backend: Custom speed test servers (deployable via Docker)
Database: None (client-side processing)
Auth: None
Hosting: Cachefly CDN for public tests, self-hosting options (Vercel not applicable)

👥 Who Is This For?

This project is useful for:

Everyday users troubleshooting slow internet at home or work
Network admins testing LAN/WiFi performance
Developers and indie makers embedding speed tests in apps/websites

📸 Screenshots / Demo

Live demo: https://openspeedtest.com
GitHub: https://github.com/openspeedtest/Speed-Test

🔥 Project Status

🟡 Maintained

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Yes — completely free and open-source for personal and commercial use.

Is the source code available?

Yes — link to repository https://github.com/openspeedtest/Speed-Test

Can I contribute?

Yes, check the GitHub repo for open issues, fork and submit pull requests, or provide feedback via issues. Contributions to improve accuracy, UI, or server deployments welcome.