Website performance, diagnosed
Speed Doctor
A clinical read on what slows your site down — Core Web Vitals, root-cause diagnostics, and developer-ready fixes. Measured on mobile and desktop in one pass.
Lighthouse engine/Real DOM analysis/AI root-cause
Documentation
Install & self-host
Clone, configure and run the full stack locally or on your own infrastructure.
Read moreAccuracyWhy scores differ from PSI
Understand the gap between Speed Doctor and Google PageSpeed Insights.
Read moreOpen sourceContribute
Good first issues, coding standards and how to open a great pull request.
Read more
Maintainer & creator
Built by Tanvir Almas
I build open-source developer tools. Speed Doctor is a free, self-hostable website performance auditor — Lighthouse, real DOM analysis and AI root-cause explanations in one report.
Support the project
Buy me a coffeeIf Speed Doctor saved you time, buy me a coffee
It's free and open source forever. A coffee keeps the audits running and the features coming.