Social Media
YouTube Thumbnail Tester
Preview how your thumbnail looks at different sizes and positions
YouTube Thumbnail Tester
Drop thumbnails here or click to upload
Recommended: 1280×720 pixels: 1280×720px
Thumbnail Tips
- • Use high contrast colors to stand out
- • Include faces with expressions when relevant
- • Keep text minimal and readable at small sizes
- • Use 1280×720 resolution (16:9 aspect ratio)
- • Test how your thumbnail looks next to competitors
Why Use YouTube Thumbnail Tester?
- ✓100% Free - No hidden costs or premium features
- ✓No Signup Required - Start using instantly without creating an account
- ✓Privacy First - All processing happens in your browser. Your data never leaves your device
- ✓Lightning Fast - Instant results with no server delays
How to Use
- Enter or paste your text in the input area above
- The tool will automatically process your input
- Copy the result or download it as a file
Features
- ✓Desktop preview
- ✓Mobile preview
- ✓Search results view
- ✓Suggested videos view
- ✓Compare thumbnails
Frequently Asked Questions
What is the ideal YouTube thumbnail size?
The ideal size is 1280x720 pixels (16:9 aspect ratio), with a minimum width of 640 pixels and under 2MB file size.
Can I compare multiple thumbnails?
Yes! Upload multiple thumbnails to compare them side by side in different YouTube contexts before choosing the best one.
How do I preview on mobile?
Click the mobile preview tab to see exactly how your thumbnail appears on smartphones in YouTube's mobile app.