A blazing fast GIF encoder that achieves 70x faster encoding than Go's standard library by using 216 web-safe colors and true parallel processing.

• 70x Faster: Eliminates dithering for true parallel color mapping
• Smaller Files: Produces files ~30% the size of standard encoding
• True Parallelization: Utilizes all CPU cores for color mapping
• Simple API: Drop-in replacement for basic GIF encoding needs

go get github.com/tenox7/gip

import "github.com/tenox7/gip"

// Basic usage
err := gip.Encode(w, img, nil)

// With custom worker count
err := gip.Encode(w, img, &gip.Options{
    Workers: 8,
})

go test -v

• Uses a fixed 216-color web-safe palette (6x6x6 color cube)
• Eliminates Floyd-Steinberg dithering for true parallel processing
• Each worker processes different image rows independently
• Fast color mapping using lookup table

This encoder prioritizes speed over color accuracy. It's perfect for:

• Web graphics where speed matters
• Thumbnails and previews
• Real-time GIF generation
• Server-side image processing

Not recommended for:

• Photographic images requiring high color fidelity
• Images that need dithering for smooth gradients

The fast color quantization technique by Hill Ma https://github.com/mahiuchun

Same as Go's standard library (BSD-style).