Thumbnail A/B Tester
Compare two thumbnails side by side. Vote, score, and get AI-powered insights to pick the winner.
Upload Your Thumbnails
Upload two thumbnails to compare. Recommended size: 1280x720 pixels.
Upload Thumbnail A
Drag & drop or click to browse
Upload Thumbnail B
Drag & drop or click to browse
Tips for Better Thumbnails
Use contrasting colors that pop - YouTube recommends avoiding red/white/black overuse
Include a human face with clear emotion - it increases CTR by 38%
Keep text to 3-5 words maximum - less is more on small screens
Use the rule of thirds for composition
Test at 50% size - if you can't read it, neither can viewers
Add a border or outline to make text readable on any background
Use consistent branding elements across all thumbnails
Create curiosity without being clickbait - deliver on your promise
Popular Thumbnail Styles
Reference these proven thumbnail formats used by top creators
The MrBeast
Big text, shocked faces, bright colors, arrows pointing at things
The Minimalist
Clean design, single focal point, professional typography
The Before/After
Split screen showing transformation, progress comparison
The Mystery
Blurred elements, question marks, censored areas
The Storyteller
Cinematic look, dramatic lighting, movie poster style
The List
Numbers prominent, multiple items shown, organized layout
This tool helps you compare thumbnails locally. For real A/B testing, use YouTube Studio's built-in thumbnail test feature or tools like TubeBuddy.
About This Tool
Upload two or more YouTube thumbnail options and run a quick A/B test to see which one people actually want to click. I made this because choosing a thumbnail by gut feel was costing me views.
How to Use
- 1Upload 2-4 thumbnail images
- 2Add your video title for context
- 3Share the test link and collect votes from real people
- 4See which thumbnail wins with percentage breakdowns
Why Use This?
Your thumbnail is responsible for most of your click-through rate. A bad thumbnail on a great video means nobody watches it. Testing before you publish takes five minutes and can double your views.