YouTube Waveform Looper

Compact waveform looping and practice controls for YouTube watch pages.

Create precise loop regions on videos for transcription, language study, and focused listening practice. A lightweight tool for anyone learning music, language or choreography from YouTube, Facebook and Instagram videos. It adds a compact waveform strip over the player so you can set, save and recall precise loops without ever leaving the page. What you can do: - Create a loop by dragging on the waveform, or press A/B to mark start and end at the exact playback position - Precise loop playback, with optional crossfade and near-zero boundary snapping to avoid audio clicks at the loop edges - Save as many named presets as you like per video, and recall any of them with one click - Export and import your presets as a JSON file, for backup or sharing - Zoom and scroll the waveform to fine-tune a loop down to the millisecond - Change playback speed (0.25x-1.25x) without losing your loop position - Drag the panel to dock it to any edge of the player, or keep it floating - Keyboard shortcuts for every action, plus three global commands that work even when the panel isn't focused Works on: - YouTube (videos, clips, embedded players) - Facebook (videos, reels), optional, enable it from the extension's settings - Instagram (posts, reels), optional, enable it from the extension's settings Everything stays on your device: no data ever leaves your browser, no account needed.