GoogleChrome/web-vitals

Automated auditing, performance metrics, and best practices for the web.

🎮 The only Front-End Performance Checklist that runs faster than the others

🔮 Libraries & tools for enabling Machine Learning driven user-experiences on the web

A curated list of Web Performance Optimization.

Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.

⚡️Faster subsequent page-loads by prefetching in-viewport links during idle time

🏋️ Find out the cost of adding a new frontend dependency to your project

Umami is a privacy-first analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place — no cookies, no surveillance, self-hosted or in the cloud.

🦔 PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.