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THE LINK IS THE SYNC
OBS Countdown Timer

OBS Countdown Timer — Free Browser Source For Streamers

Add the overlay version of this page as an OBS Browser Source and it drops onto your scene with a transparent background — no green screen, no chroma key setup. Set your stream-start countdown, copy the link into OBS, and it's live.

00servers to run this
Anyone opening your link right now sees exactly this.

Change the countdown

Already running at 5 minutes above — adjust it here if you need something else.

Add it to OBS in 3 steps

  1. In OBS, go to Sources → + → Browser.
  2. Paste the overlay link below (not the regular sync link) and set the size — 400×160 is a good starting point.
  3. Check "Shutdown source when not visible" to save CPU between uses.
The overlay link is the same countdown with the background made transparent and every button/menu stripped out — just the digits, ready to sit on top of your scene.

Common questions

Will the background really be transparent in OBS?

Yes — the overlay link removes the page background entirely (not just visually dark, genuinely transparent), so only the countdown digits appear on your scene, with no chroma key or green screen needed.

Does the countdown keep running if I switch OBS scenes?

Yes, as long as the Browser Source stays loaded — if you enable "Shutdown source when not visible," OBS will reload it when the scene becomes active again and it will recalculate against the same shared deadline correctly.

Can I resize the overlay without it looking blurry?

Yes — the digits are rendered as live text (not an image), so resizing the Browser Source in OBS stays sharp at any size.