YouTube Thumbnail Resizer
Generate crisp 1280 × 720 px (16:9) video thumbnails that meet YouTube upload guidelines under 2 MB.
100% In-Browser Resizing: Your images are processed entirely locally on your device. Zero server upload.
Drop your image here
or browse to upload
Supports JPG, PNG, and WebP up to 25 MB • Completely private & local
Official YouTube Custom Thumbnail Specifications
YouTube officially recommends:
• Resolution: 1280 × 720 pixels (minimum width: 640 pixels)
• Aspect Ratio: 16:9 widescreen
• Formats: JPG, PNG, GIF, or WebP
• Max File Size: Under 2 MB for video uploads
Frequently Asked Questions
YouTube permits thumbnail images up to 2 MB in file size.