This post was originally published in 2013
The tips and techniques explained may be outdated.
The traditional methods of creating pixel art one pixel at a time no doubt yields the best results, but it’s an extremely time consuming specialist craft. Today I’m going to show you how to cheat and make use of Illustrator’s Object Mosaic feature to create cool 16-bit style pixel art the easy way, allowing you to quickly produce retro style sprite graphics for your designs and artworks.
Rather than draw our artwork from scratch we’ll use a photograph as the base for our pixel art. Begin in Photoshop and make any necessary contrast and colour adjustments before clipping out the subject with the Pen tool.
The clipping path around your subject can be pretty rough, don’t worry too much about creating perfect lines as most of the detail will be lost when the image is pixelated.
Copy and Paste your clipped image into Adobe Illustrator then head to Object > Create Object Mosaic.
The main option to play with is the Number of Tiles. This number will determine how much detail is retained within your art, the higher the number the more detailed the image. Be sure to click the Use Ratio button to equally adjust the number of tiles between the Width and Height to create perfectly square pixels. Finally select the Delete Raster checkbox to remove the original picture after the conversion.
Right click and select Ungroup multiple times until each individual pixel shape can be selected individually.
Pick one of the white squares from the background of the image and head to Select > Same > Fill Color. Hit delete to remove all the white background pixels to clip out the main subject.
Tidy up any unwanted pixels to neaten up your graphic. Don’t worry about the fine white hairline gaps between the pixels, this is just a rendering fault within Illustrator. You’ll notice they don’t appear when you export your artwork or paste the graphic back into Photoshop.
Illustrator’s Object Mosaic feature can be used to easily create cool 16-bit style pixel art with no tedious tracing or painting, making it a great technique to keep in mind for any fun retro video game related projects.