https://miksks.com/products/dithering-automator

 ATN, PAT, GRD, PSD

Introducing Dithering Automator - a tool for achieving a retro bitmap aesthetic with ease.  This Photoshop tool allows you to add a dithering effect to your images - whether you are looking for a lo-fi 1-bit aesthetic, or a wider color range.  With 12 dithering patterns and 74 color palettes included, this tool offers almost endless possibilities for creating unique and visually interesting designs. Plus, you can see the results in real-time, making it easy to experiment and fine-tune your designs in a procedural way until you achieve the desired effect.  The Dithering Automator is also versatile and adaptable, with multiple template sizes available to suit any project; from a super low-res 64x64px to more a detailed 1024x1024px. You also have the option to set up your own canvas with custom dimensions if you prefer.  The included action allows you to upscale your images without loss of resolution, in just a few clicks.