Texture Editing Sample:

pixelated PBR texture-set

This is addon made up as a fully working tool, 
that can allow you to make retro textures and animations.

Other Samples can be found on Blender Market. Product has the same name.

Effects visualization:

Additional Assets

For better usage, in the new update was added assets for making animations or applying pixelated filters to any kind of input (video / photo / sequence).
They includes a few planes with different unvrapped UVs, and that allows avoid mismatches in dithering effects to correct aspect ratio.

Viewport:

This tool can make pixelated texture based on yours texture with applying dithering masks and other parameters in real time.

This addon can make:
1. PBR Texture baking
2. Making Stylized any kind of input (video, photo, photo sequence)
3. Supports alpha
4. You can add Special node to the compositor too.

Documentation:

Overview:

Functions:

Textures:

Photo Editing:

Video Editing:

If you have any questions, join to my discord channel, and feel free to ask me! Thanks!