Frontend Performance Probe

JavaScript UI performance diagnostics tool.

Frontend Performance Probe helps developers identify JavaScript and UI performance bottlenecks directly in the browser. Features include: • Long task detection • Slow event handler profiling • DOM mutation monitoring • Resource timing analysis • Navigation timing diagnostics • AJAX request timing • Optional jQuery instrumentation Designed for debugging modern frontend applications including React, Vue, Angular, jQuery, and vanilla JavaScript websites. All diagnostics run locally in the browser console. No user data is collected or transmitted.