PEP: Specialized Compression Format for Pixel Art with Superior Size Reduction
By
msephton
An everything bagel for the brain. Substantive, layered, well-seasoned.
Summary
PEP (Prediction-Encoded Pixels) is a specialized image compression format designed specifically for low-color pixel art (up to 256 colors). It uses Prediction by Partial Matching, Order-2 compression to achieve superior compression ratios compared to GIF, PNG, and QOI formats, typically reducing image sizes by 20-50% smaller than GIF/PNG and multiple times smaller than QOI. The trade-off is slower compression speed (2-10x slower than other formats), making it ideal for applications where file size is more important than encoding speed.
Key quotes
· 4 pulledThis format is specifically designed to be for low-color pixel art (<=16 colors works best, up to 256 colors is supported)
It uses "Prediction by Partial Matching, Order-2" compression, which is able to compress packed-palette-indices smaller than GIF, PNG, and QOI
It's 2-10x slower than GIF/PNG/QOI (depending on the image), but often compresses the image 20-50% smaller than GIF/PNG (and multiple-times smaller than QOI)
If you care about compressed image size, this is for you
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