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SiteSpeed.io

sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various…

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Latest public signals

Page copy revised 25 Oct 2026 from public sources. Refresh checks the live site and, when this entry has a GitHub repository, the latest release.

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Introduction

[![Downloads][downloads-image]][downloads-url] [![Docker][docker-image]][docker-url] [![Stars][stars-image]][stars-url] [![npm][npm-image]][npm-url] [![Changelog #212][changelog-image]][changelog-url].

The latest GitHub release listed on 25 Oct 2026 was v42.10.0, published 2026-10-23.

Features

These items are quoted from public documentation fetched on 25 Oct 2026. Taken from repository README headings.

  1. NodeJS: You’ll need a browser installed locally (Firefox / Chrome / Edge / Safari), plus FFmpeg and Python if you want video and visual metrics. See the installation guide for the full list.
  2. Continuous monitoring in Grafana: Live setup at dashboard.sitespeed.io — sitespeed.io feeding Graphite, visualised with Grafana.

Pros

Points stated in the public sources fetched on 25 Oct 2026:

  1. Published license: The GitHub repository lists MIT License (MIT).
  2. Repository topics: The repository’s GitHub topics include metrics, monitoring, perfmatters, performance-analysis, performance-dashboard, performance-metrics, sitespeed, web.

Cons

The pages fetched on 25 Oct 2026 do not publish a limitations list. That absence is not evidence that the tool has no drawbacks. Current issues are tracked at https://github.com/sitespeedio/sitespeed.io/issues.

The fetched README did not include a fenced code example. Use the official documentation linked below.

Resources:

Pricing

The fetched text says:

sitespeed.io is an Open Source web performance tool.

No separate price list was found on 25 Oct 2026.

The fetched pages do not name a target audience. Decide fit from the official description and the feature list above.

Conclusion

SiteSpeed.io is summarized by its public description as: “sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various…”.

The latest GitHub release listed was v42.10.0, published 2026-10-23.

This page was rebuilt on 25 Oct 2026 from www.sitespeed.io, github.com. It keeps only what those pages stated. Confirm the current product, license, and price on the official site before you adopt it.