Tempo – Video Speed Controller for Any Site

Speed up or slow down any video: presets, a smooth dial, S/D/R keys and per-site memory. Works on YouTube, courses and more.

The Video Speed Controller extension is a high-performance productivity tool designed to give users total mastery over their digital time by interacting directly with the HTML5 video engine. It offers an expansive velocity spectrum, allowing for seamless adjustments from ultra-slow 0.25x for detailed analysis to a lightning-fast 16x playback for hyper-skimming long content. Built with a modern, Gen-Z-inspired black theme to reduce eye strain, the extension prioritizes a "zero friction" experience through quick shortcuts that let users speed up, slow down, rewind, and advance any video without leaving the player. By bridging the gap between massive content libraries and limited human time, this extension transforms passive viewing into an active, optimized navigation experience across any web platform.