Lossless GIF recompression via exhaustive search

The article explores lossless GIF compression optimization, explaining that while GIF is the oldest widespread compressed image format and necessary for compatibility with very old browsers, its compression efficiency using LZW encoding is poor compared to modern formats like PNG and WebP. The author discusses how tools like Zopfli perform exhaustive searches across all valid compression streams to find optimal file sizes, and notes that while flexiGIF exists for GIF compression, it can sometimes produce larger files than the original algorithm, prompting the author's investigation into improving GIF compression.