What does previewer mean?
A person or device that previews something, especially a video or image, before it is shown to an audience. A previewer is often used to check the quality and content of a presentation before it is delivered.
Example
"The event organizer used a previewer to check the video playback on the big screen before the conference started."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.