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layout: startpage
title: Welcome to the wonderful world of Web Performance
description: Sitespeed.io is an open source tool that helps you analyse and optimise your website speed and performance, based on performance best practices.
keywords: sitespeed.io, wpo, webperf, perfmatters, fast, site, speed, web performance optimisation, analyse, best practices, continuous integration
nav: start
image: https://www.sitespeed.io/img/sitespeed-2.0-twitter.png
---

# Welcome to the wonderful world of Web Performance

Unlock the full potential of your website with sitespeed.io - the ultimate tool for monitoring and enhancing web performance. Say goodbye to the complexity and high costs of measuring performance. With our easy-to-use [Open Source tools](/documentation/), you'll have complete control over your metrics and own your own data. Welcome to the world of exceptional web performance with Sitespeed.io.