Open Alert Box in the Streamlabs Dashboard, select the widget theme and alert type you actually use, change its image or GIF and its show and hide animations, save, then run that alert from Test Widgets in Streamlabs Desktop. Tests display only saved changes, so a successful preview is the required check before going live.
Sign in to the Streamlabs Dashboard and open Alert Box. Confirm the widget theme shown in the theme selector matches the scene collection used in Streamlabs Desktop, then choose the event type you want to change, such as a follow, subscription, or tip.
In that alert type's settings, replace the image or GIF with the intended supported asset, then choose both a show animation and a hide animation. Adjust the alert duration only if the new animation is cut off or remains on screen too long.
3
Save before testing
Select Save and wait for the confirmation. Streamlabs test controls show saved settings, so an unsaved edit can make the old animation appear even when the editor preview looked correct.
4
Confirm the Alert Box source
In Streamlabs Desktop, select the live scene and locate Alert Box in Sources. If it is missing, select the plus icon in Sources, choose Alert Box, and add it. Keep the source above the gameplay layer so the animation is visible.
5
Trigger the exact alert type
Select Test Widgets near the bottom of Streamlabs Desktop and trigger the alert type you edited. Success means the intended media, show and hide animations, text, sound, duration, and source position all appear once in the program preview.
If it does not work
If the old animation appears, confirm the edit was saved and that both the Dashboard and Desktop scene use the same widget theme.
If the alert remains stuck, select a show and hide animation and check that Alert Duration is long enough for both to complete.
If the test is audible but invisible, move Alert Box above the gameplay source and confirm it is inside the canvas rather than uploading the asset again.
ⓘ Sources and verification
Checked against official documentation on . Scope: Streamlabs Dashboard and Streamlabs Desktop.
Follow the linked first-party guidance if labels differ after a platform or app update.
