Glossary
What is Watch time?
Watch time is the total amount of time viewers have spent watching your videos.
Watch time explained
Watch time adds up every minute viewers spend on a video. Together with satisfaction signals, it helps YouTube judge whether a video keeps people watching.
A clickbait thumbnail can raise clicks but hurt watch time if the video doesn’t deliver. The goal is a thumbnail that makes an honest promise the video keeps.
Why it matters for thumbnails
Thumbnails are the first thing viewers see, so they influence how watch time plays out on your channel. Read our thumbnail best practices to put this into practice, or browse the rest of the glossary.
Make your next thumbnail in minutes
Tell the AI agent what your video is about — it proposes a thumbnail, you approve it, and you can tweak it by asking.
Keep exploring
Audience retention
Audience retention shows how much of a video viewers watch before leaving.
Learn more →Clickbait
Clickbait is a thumbnail or title that promises something the video doesn’t deliver.
Learn more →Thumbnail best practices
12 practical rules for thumbnails that earn clicks without clickbait.
Learn more →