Pixel Art resizing

The Resize Pixel Art Document option, found on the Document menu, allows you to upsample your document using one of two renowned pixel art resampling algorithms: XBR and HQX.

Before: Image upsampled 4x using Bicubic filter. Observe the jaggy edges and ringing. After: Image upsampled 4x using XBR filter. See how the edges are smoother and more refined.
To resize using pixel art filters:
  1. From the Document menu, select Resize Pixel Art Document.
  2. Choose from either HQX or XBR as the resampling method, and pick a size multiplier from 2x, 3x or 4x.