smlr

• This project is experimental and needs some tuning. *

Re-encode jpeg images with no perceivable quality loss.

Uses the butteraugli psychovisual comparison and k-ary search to determine the best jpeg quality setting that will not "appear" degraded.

Installation:

1. Clone https://github.com/google/butteraugli.
2. Run `make` in the `src/` directory to build the `compare_pngs` binary.
3. Move `compare_pngs` to some folder in your `PATH`
4. `go get github.com/jasonmoo/smlr`

Use:

smlr -if my_image.jpg -of my_image.best.jpg

Flags available:
    -if string
        file to process
    -of string
        output file
    -width int
        width to resize to.  omitting either width or height will maintain proportion.
    -height int
        height to resize to.  omitting either width or height will maintain proportion.
    -max float
        maximum deviation detected (default 1.1)
    -cores int
        how many cores to use (default runtime.NumCPU())

Inspired by:

https://medium.com/@duhroach/reducing-jpg-file-size-e5b27df3257c

LICENSE: MIT