Thumbnail Resizer
Resize your images to the perfect YouTube thumbnail size (1280x720 pixels). High quality, fast, and free.
Thumbnail Best Practices
Use High Resolution
Always start with a high-resolution image. Resizing a small, blurry image to 1280x720 won't make it look better. Our tool works best when you upload high-quality PNG or JPG files.
Maintain 16:9 Aspect Ratio
YouTube's player is 16:9. If your thumbnail is a different shape, YouTube will add black bars (letterboxing) to the sides. Our resizer automatically crops and fits your image to the perfect 16:9 ratio.
Keep File Size Under 2MB
YouTube has a 2MB limit for thumbnail uploads. Our converter optimizes the JPEG quality to give you a sharp look while keeping the file size small and compliant.
Official YouTube Resolution Guide
Recommended
1280 × 720
Minimum Width
640 Pixels
Aspect Ratio
16:9
According to YouTube's official recommendations, the ideal thumbnail size is 1280 pixels by 720 pixels. This ensures that your thumbnail looks sharp when viewed on large TV screens and scales down perfectly for mobile devices.