if you mean pixelated images, then you select the layer you want to pixelate, or flatten the image if you have finished (Layer > Flatten Image) click on Filter > Pixelate > Mosaic. A window should pop up with a cell size slide, slide the bar to your desired pixelation. . x
To work with digital images and to create brand new pixel based images. You can create Web content or print creations.
Almost any format of bitmap or pixel based images: JPEG, PNG, TIFF, PSD, GIF and so on.
There are two types of images you can work with, vector images and pixel(raster or bitmap images).Vector based software are Adobe Illustrator, CorelDraw and you can work both image types, but you have more capabilities to work with vector images, primer for pixel based software is Photoshop in which you can also work with both image types but you have more capabilities to work with pixel images.
Photoshop
Vector and bitmap, raster or pixel. Type, shapes like circle are vectors and can be saved and edited if they are in .psd or .tif format saved. Pixel, raster or bitmap images can be edited and saved in any format, Photoshop supports almost any format.
Open Photoshop then press File -> New
Adobe Photoshop, Adobe Photoshop Elements, GIMP,
Pixel
There is no system for Minecraft that only has the minecraft colors that can help you make the pixel art.
Gimp is nothing like Photoshop. It works with images in a way that is completely foreign to those familiar with Adobe-type products. It was as if it the program was designed by someone who had never had to actually manipulate an image professionally. If you're stuck on the Linux OS, but you need to work with images I would suggest looking at an app called "Pixel Image Editor". Also, there is a Gimp/Photoshop hack called "Gimpshop".
You can save Lab images in PSD, PSB, Photoshop EPS, Photoshop PDF, Photoshop Raw, TIFF, Photoshop DCS 1.0, and Photoshop DCS 2.0 formats.
Vector and Raster or pixel images.