Palette

Palette is a web performance monitoring platform that helps engineering teams find and fix slow user experiences at the level of individual lines of code. Its tools collect end-user interaction latency, page-load data, and JavaScript profiles, connecting performance regressions to their underlying causes. Teams can profile browser sessions and monitor responsiveness for clicks, key presses, scrolling, and mouse movement, alongside Web Vitals and custom metrics.

Palette supports browser and Electron profiling and provides developer resources, including documentation, code examples, and product guidance. Its browser setup uses an integration with profiling and paint plugins, enabling teams to capture interaction and rendering details from real user sessions. The company says network payloads are compressed asynchronously off the main thread and sent during idle periods. Profiling can be applied to a subset of sessions, allowing teams to balance diagnostic coverage with performance overhead.

Designed to shorten the path from detecting a problem to identifying its cause, Palette offers a free-start option and product demos, with pricing, documentation, and support resources available.