What Is Test & Compare?
Studio feature to A/B test thumbnails.
Definition
Studio feature to A/B test thumbnails.
What Test & Compare means
Studio feature to A/B test thumbnails.
Why it matters
Thumbnail tests show which design gets more watch time.
Practical tip
Test clearly different thumbnails, not small tweaks.
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Related terms
All YouTube Glossary: 14 Terms & Jargon Explained →What Is Watch Time?Total minutes viewers spent watching; a core ranking signal.What Is YouTube Partner Program (YPP)?YouTube's monetisation programme with eligibility thresholds.What Is Altered or Synthetic Content Label?Required disclosure for realistic AI-made or edited content.What Is Audience Retention?The share of a video viewers keep watching, moment by moment.What Is Average View Duration?Average time each view lasted.What Is Channel Memberships?Monthly paid tiers viewers can join for perks.