jeiang / wallpaper-finder

just needed something to find images that are "wallpaper sized" efficiently

wallpaper-finder

A zig utility to find wallpaper sized images on a disk. Only supports PNG and JPG.

How it works

Just reads the file until it finds the encoded height and width, and checks if it matches 16x9 (roughly).

Why

Imagemagick script wasn't fast enough, and loading a ton of files (i was searching 90k+ files of 375 GiB total). This program reads only the first few bytes of the file, and linux caching makes it almost instant for re-runs.

Acknowledgements

the stackoverflow answerers (and the question askers) who helped me figure out how jpg and png are structured.

TODO: add the sources