Did you know Firefox's about:performance?

🔋 Easily find the tab, iframe or extension that churns your CPU, spins your fan and drains your battery
🧱 Find and close the memory-leaking tabs to free precious RAM

Also available via hamburger menu: More > Task Manager


Sign in to participate in the conversation

This service is offered by, visit our website to discover all the free services offered.
Beer, privacy and free software lovers. Join us!