Pixel Art Resizer is a feature you can enlarge / shrink the pixel art of GIF without compromising the image quality. You can resize both static images and animations if the image format is gif. Conversion will begin as soon as you enter the size which you want to resize, and click on the the "Uploading a pixel art you want to resize" or "Try to resize a sample pixel art".
Upload a pixel art you want to resize.
Try to resize sample pixel art.