React Scan
A tool that detects and highlights React rendering activity.
What it does
A tool that detects and highlights React rendering activity.
When it fits
Investigating unnecessary renders and interface performance problems.
Other options in this category
- Loadable Components — Deferring component bundles until a route or feature needs them.
- next-lazy-hydration-on-scroll — Reducing initial client work for below-the-fold Next.js content.
- Partytown — Reducing main-thread work caused by external website scripts.
- React Geiger — Noticing costly renders while interacting with an application.
- react-fast-memo — Exploring component memoization in measured performance-sensitive cases.
Source
Project source for React Scan ↗
Editorial overview reviewed on October 24, 2026. Follow the source for current setup, compatibility, and licensing.