Every other countdown timer online is a generic stopwatch. This one is built for webinar hosts — with step-by-step instructions for Zoom, Google Meet, OBS, and slide decks, plus a hand-off to auto-issued certificates when your session ends.
Create engaging countdown timers for your webinar sessions. Set custom times, display messages, and keep your attendees engaged.
Message displayed when timer reaches zero
Enter minutes and seconds, or use the quick preset buttons for common durations.
Start, pause, resume, or reset your timer at any time during your webinar.
Display the timer in fullscreen for maximum visibility during presentations.
Skip the spreadsheet. Auto-issue branded, verifiable certificates from Zoom, Google Meet, or Webex.
Three ways to get the timer in front of your Zoom attendees — from dead-simple (share a browser tab) to production-grade (OBS virtual camera). Pick based on how polished you want the holding screen to look.
Open this page in a browser tab, set your timer, and click the fullscreen button above. In Zoom, click Share Screen → Window and pick the timer tab. Attendees see a giant, readable countdown — perfect for a "back in 10 minutes" break screen. Works on every Zoom plan, no extra software.
In OBS Studio, add a Browser source pointing to
certfusion.com/countdown-timer-for-webinar,
resize it to fit your scene, then click Start Virtual Camera.
In Zoom, switch your video source to OBS Virtual Camera. You can now overlay
the timer on your face-cam, add a lower-third, and brand the whole scene — the same
setup pro streamers use.
Google Slides and PowerPoint both support embedding a live web view via add-ons (Web Viewer for Slides, Web Viewer for PowerPoint). Paste the timer URL into the add-on, and the countdown plays inside your deck — so you never have to alt-tab away from your presentation to show the timer.
Google Meet's screen-share handles browser tabs cleanly, so the workflow is nearly identical to Zoom — with one shortcut most hosts miss.
Google Meet lets you share a single Chrome tab via Present now → A tab. Open the timer in a new tab, fullscreen it, then select that tab in the Meet share dialog. Attendees see only the countdown — no browser chrome, no other tabs.
Same OBS browser-source + virtual-camera pattern as Zoom. Google Meet picks up the OBS Virtual Camera as a video source — so you can run the timer as an overlay on your webcam feed instead of dedicating a full screen-share to it.
Pre-webinar waiting rooms are where 15–20% of registrants drop off. A well-designed holding screen — with the countdown front and centre — keeps them in the tab. Three things to do before your next session:
Plain stopwatches feel unprofessional. In OBS, drop your logo above the timer and overlay a rectangle in your brand's primary color behind the countdown digits. Takes two minutes, transforms the perception of your event.
Latecomers joining at 5 past the hour need to know what they've missed and what's coming. A 3-line agenda below the countdown ("Intro, Live Demo, Q&A — certificates emailed after") does that without dedicating airtime to repetition.
Setting expectation up-front reduces "where's my cert?" support tickets by ~80%. Add a small line below the agenda: "Stay until the end and we'll email your certificate automatically." Then make it true by using CertFusion to auto-issue webinar certificates after the event.
Your timer hits zero, the webinar wraps, and now 200 attendees are waiting on their certificate. Don't DIY it. CertFusion lets you auto-issue webinar certificates after the event via Zoom, Google Meet, or Webex integration — or drop in a CSV if you're on a platform we don't natively support. Every attendee gets a verifiable certificate of participation, emailed automatically, in a single click.
Not yet as a copy-paste widget. For now, use the OBS browser-source workflow above (add
certfusion.com/countdown-timer-for-webinar
as a Browser source in OBS) or link attendees directly to the page — both work without signup
or auth. A proper embed code is on the roadmap.
No. The timer runs in your browser, so closing the tab stops it. Keep the timer tab open in the background during your webinar — on a second monitor is ideal so you can see the countdown without switching windows.
Yes. Set a custom end message in the form above (up to 100 characters) — it displays when the countdown finishes. Useful for "Back in 5" messages during breaks or "We'll begin shortly" before the webinar starts.
Yes. The timer works on any mobile browser. For hosting a webinar we recommend running it on desktop so you can fullscreen-share into Zoom or OBS — but for a quick check on your phone, mobile works fine.
Running events without a webinar platform? Pair the timer with our free online certificate generator for one-off certs, or learn how to auto-generate certificates from Google Forms if registrations live in a form.