【OBS-compatible】Tournament Widget

Tournament Widget for OBS

The Tournament widget is an OBS widget that displays a knockout tournament bracket on your stream. Use it for announcing tournament matchups in a game competition, running a participatory bracket event with your viewers, or a head-to-head collab match — anywhere you want to share how a competition is progressing.

Create the bracket in Jamluca, copy the published URL, and paste it into an OBS browser source to display it on stream. During the broadcast, just pick the winner from the controller and the bracket's winner line extends automatically, making it great for showing progress in real time.

Add Participants and Build the Bracket

From the participant management area in the editor, you can add participants manually to build out the bracket. Reorder the list by dragging, or use random shuffle to mix up the matchups — handy for staging a fair draw on stream.

If the number of participants isn't a power of two, the top participants automatically get a seed (a bye through the first round) and enter from the second round. Besides adding participants manually, you can also pull a participant list straight from a Jamluca table, so any list you've already prepared can be reflected in the bracket at once.

Track Wins and Manage Scores

Once a match starts, a single tap on the winner button in the controller advances the bracket. Selecting a winner extends that match's winner line to the next match automatically, so viewers can visually follow who's advancing.

Scores are optional — you can record a number on each match card, but they are display-only and never affect who wins.

Filter the View to Stay Readable Even for Large Tournaments

With 32, 49, or more participants, showing the entire bracket at once can shrink every box down to an unreadable size. The Tournament widget lets you narrow the view to a specific round onward, a specific block, or a single match, so fewer columns mean each box can be shown larger.

You can switch the view live from the "View" tab on the controller. Zoom in on the semifinals, or pull out just the one match everyone's watching — whatever fits how the stream is unfolding.

Customize the Layout and Box Ratio

Choose from five bracket layouts: horizontal, center-converging, vertical center-converging, vertical (top to bottom), and vertical (bottom to top). Horizontal and center-converging layouts suit wide stream layouts, while the vertical layouts fit a tall space at the edge of the screen.

The box aspect ratio also has six presets to choose from — the default 6:1, plus 16:9, 4:3, 1:6, 9:16, and 3:4. Pick a tall preset and participant names automatically switch to vertical text. You can freely customize the color and thickness of the box background, border, and connecting lines, and choose from 12 built-in templates to match your stream's theme.

Use It in OBS with a Browser Source

Each bracket is published as a dedicated URL. Add an OBS browser source and set that URL to display it on stream. You can adjust the size and position in OBS to fit your layout and balance it with other visual elements.

For the step-by-step setup flow, see How to Use Jamluca.

Stream Scenarios for the Tournament Widget

• Show the bracket for a game tournament or competition stream
• Run a participatory collab bracket event with your viewers
• Keep a large tournament readable by filtering down to what matters
• Match the bracket design to your stream's theme
• Share a head-to-head bracket's progress with a co-streamer in real time