Presto

About

Control video playback speed on any website with a video player. Click
  the Presto icon to activate, then use the badge or keyboard shortcuts to
  adjust speed instantly.

  ⚡ HOW IT WORKS
  Presto adds a small, non-intrusive speed badge to the top-left corner of
  every video. It only appears when you hover over the video or when
  you've changed the speed — it never gets in your way.

  🎛️  SPEED RANGE
  0.1× to 6× in precise 0.1 steps. Binge lectures at 2×. Rewatch
  highlights in slow-mo at 0.5×. Go full 6× when you just need to skim.

  ⌨️  KEYBOARD SHORTCUTS
  D or > → Speed up 0.1×
  S or < → Slow down 0.1×
  A or R → Reset to 1.0×
  Mouse wheel on video → ±0.1×

  ✅ FEATURES
  • Works on any site with a video player — uses the browser's native
  playback engine
  • Runs inside iframes and embedded players too
  • Detects videos that load dynamically, no page refresh needed
  • Badge stays visible as a reminder when speed ≠ 1×
  • No broad permissions — activates only when you click the icon

  🔒 PRIVACY
  Presto collects absolutely nothing. No browsing history, no video data,
  no personal information. The extension runs entirely in your browser and
  never makes any network requests.