Guide library
Choose the guide that matches your thumbnail decision
These guides cover different parts of the same job. Start with the question that is blocking you now.
What are you trying to do?
Shortlist ideas
Test ideas before publishing
You have 2 to 6 thumbnail and title concepts and need to choose no more than 3 finalists for YouTube's live test.
Follow the pre-publish workflowJudge a claim
Check a CTR prediction claim
A tool has shown you a percentage, forecast, or score and you need to know what that number can support.
Read the CTR prediction guidePrepare files
Check size, format, and upload limits
Your finalists are ready. Check YouTube's current dimensions, listed formats, file limits, and the separate limits for this preflight.
Check the current file guideUse the product
Need a result before you read?
Run the free preflight first, then inspect how the score was built.