Guides

Quick start for syncing multiple YouTube videos in the browser — no account required.

  1. 1

    Paste your links

    Add one or more YouTube URLs (watch, Shorts, youtu.be, or video ID). Use the player count dropdown to spawn multiple synced copies of the same URL with different offsets.

  2. 2

    Pick a layout

    Choose grid, 1+N spotlight, side-by-side, picture-in-picture, or vertical for Shorts. Drag tiles to reorder.

  3. 3

    Fine-tune each feed

    Set per-video start offset (±0.1s nudges), mute, solo audio, quality, and loop. Offsets let you line up reaction cams or delayed streams.

  4. 4

    Use master controls

    Play all, pause all, restart, seek, skip ±5s/±10s, change speed (0.25×–2×), and control master volume. ViewSync keeps players aligned with a master clock.

  5. 5

    Fullscreen when ready

    Use the fullscreen button on the master dock for a clean viewing session. YouTube’s own player controls stay fully visible on each tile.

Open sync workspace