Image Optimizer

Overview

Image Optimizer is an image conversion program, available on Linux.

Features described in its Flathub listing: offline use.

File formats mentioned: PNG and JPEG.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

At a glance

Image Optimizer is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

About

Image Optimizer makes PNG and JPEG files smaller without changing how they look. It rewrites the files you pick in place, so the file you selected is the one that gets smaller. The compression is lossless, which means the pixels come out identical and nothing is re-encoded at a lower quality. What comes off is whatever the encoder left on the table, so screenshots and interface images usually gain the most and photos straight out of a camera the least. Features: Compress PNG and JPEG images without losing quality Optimize a whole batch at once, several files at a time Works offline, with no account and nothing uploaded Keeps the colour profile and the orientation, so images still look the way they did Keeps modification times, so a library sorted by date stays in order Quit quickly by pressing Ctrl + Q

Description from Flathub — AppStream (Flathub)