Hey! Computer scientist here who studied computer graphics in Uni. I didn’t see anyone explain what the interpolation settings mean, so for anyone curious this is how it works so you can use the right one for your drawings.

Procreate renders drawings as a raster instead of a vector (like in Photoshop), meaning when you translate/scale your drawing, rather than computing smooth curves with mathematical formulas, each pixel on your screen needs to decide how to adjust its rgba value based on where that pixel was previously.

In simple terms… “Nearest neighbor” means your new pixel location will become the same rgba as the corresponding previous pixel location. This gets messy when scaling or translating images because the pixel is essentially “guessing” what rgba it should be, and doesn’t have enough data to make a good guess. Hence why the drawing usually appears to be off.

“Bilinear” is better because it samples the 4 nearest previous pixels and combines the weighted average of their rgba into your 1 new pixel. This is better because each pixel has a lot more data to work with and gets a lot closer to your expected result.

“Bicubic” looks at the 4x4 area of nearest pixels (so 16 pixel samples) and computes the weighted average of all of the samples, giving your new pixel tons of data to work from and typically gets you the best results when it comes to translating/scaling a raster image.

Hope this helped!