Pick the thumbnail thatearns the click
Preview in real YouTube layouts, compare options, generate in your channel style, and export the winner.
Click below or drag & drop thumbnails to start
PNG or JPG - 1280×720 recommended
- Open Photoshop, squint at tiny preview
- "Which one looks better?" debate in Slack
- Pick based on gut feeling
- Drop thumbnails, see them in real YouTube feed
- Compare 2-6 options side by side at actual size
- Pick the one that clearly reads best
How it works
Add title & thumbnails
Drop 2-6 options with your video title.
Preview in real layouts
See thumbnails at actual feed size in Home, Search, Watch Sidebar.
Pick winner & export
Export the clearest option in 1 click.
Questions? We've got answers.
Are my thumbnails private?
Yes, completely private by default. Here's how it works:
- Only you can see your uploads
- You can delete projects anytime — thumbnails are removed immediately
- We don't use your images to train AI models or share them publicly
- You can delete your data anytime
Do you integrate with YouTube Studio?
No direct integration yet. ThumbBoost is a decision tool — you upload thumbnails, compare them in realistic layouts, pick the winner, and export it. Then you upload to YouTube normally. This keeps the workflow simple and focused. Direct integration is on the roadmap for later.
How many thumbnails can I compare at once?
Depends on your plan:
- Free: 2 variants (A/B quick check)
- Pro: Up to 6 variants
You can run as many separate comparisons as you like — no need to cram everything into one session.
Can I cancel anytime?
Yes, cancel in 2 clicks from your account settings. Here's what happens:
- You keep full access until the end of your billing period
- Your projects and export history remain available for 30 days after cancellation
- No hidden fees, no questions asked
- Reactivate anytime if you change your mind
What YouTube layouts can I preview?
Home feed, Suggested sidebar, Search results, and Channel grid. Toggle between light and dark mode, and use scale controls to test mobile readability at different sizes.
What file formats are supported?
JPG and PNG files. Recommended size is 1280×720 pixels (standard YouTube thumbnail dimensions), but we'll automatically resize if needed. Max file size: 5MB per thumbnail.
Still have questions? Email us — we typically respond within 24 hours.
Stop guessing. Start shipping winners.
Every upload is a chance for more clicks. Make it count.