YouTube · Pro · Creator pack $20 or Pro $29.99/mo

🖼️ YouTube A/B Thumbnail Tester

AI predicts CTR for thumbnail variations before publishing using visual analysis.

What you get

Predicted CTR score for up to 3 thumbnail concepts, breakdown of what works in each (face position, text clarity, color contrast, emotional trigger), and a ranked recommendation with specific edit suggestions.

Input: Describe two thumbnail options to A/B test

Run A/B Thumbnail Tester →

How it works

  1. Describe your video — Describe two thumbnail options to A/B test
  2. Run the analysis — Click Analyse. The report streams in live, usually within 10 seconds.
  3. Work the action list — Read the headline scores, then fix the top item in the prioritised action list. Re-run to compare.

Guide: how to use A/B Thumbnail Tester

YouTube's built-in thumbnail test tells you which of three thumbnails won — after a week of impressions. The A/B Thumbnail Tester predicts the likely winner before you upload, scores each concept on the visual factors that drive click-through, explains what is working and not in each, and ranks them with specific edits — so you enter the real test with three strong candidates instead of one strong and two weak.

Read the full guide (5 min) →

Frequently asked questions

Is A/B Thumbnail Tester free to use?

A/B Thumbnail Tester is a Pro-tier tool. Unlock it with the one-time Creator pack ($20 / 120 runs) or the Pro plan ($29.99/mo, 15 runs a day).

What do I need to enter?

Describe two thumbnail options to A/B test. The more specific your input, the more specific and useful the report.

What does the report include?

Predicted CTR score for up to 3 thumbnail concepts, breakdown of what works in each (face position, text clarity, color contrast, emotional trigger), and a ranked recommendation with specific edit suggestions.

How is this different from YouTube Studio?

YouTube Studio shows what happened. A/B Thumbnail Tester explains why and ends with a prioritised action list so you know exactly what to change first.

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