YouTube Thumbnail Size Tool
Preview and check YouTube thumbnail dimensions and specifications.
Recommended Size
1280 × 720 pixels
Minimum Width
640 pixels
Aspect Ratio
16:9
Max File Size
2 MB
Accepted Formats
JPG, PNG, GIF, BMP
Best Practices for YouTube Thumbnails
- 1.Use high-contrast colors to stand out on small screens.
- 2.Include readable text (large, bold fonts) — many viewers browse on mobile.
- 3.Use faces with expressive emotions — they drive higher click-through rates.
- 4.Keep important content in the center; edges may be cropped on some devices.
- 5.Use consistent branding (colors, fonts, logo placement) across your channel.
- 6.Avoid misleading thumbnails — YouTube may penalize clickbait.
- 7.Test your thumbnail at small sizes to ensure readability.
How to Use This Tool
Enter or paste your content in the input area above. Results update instantly in real-time. All processing happens locally in your browser — your data never leaves your device.