Installation • Command-line completion • Man documentation • Usage • CI Status • Contributing • License

rsz is a simple utility for image resizing.

To build the rsz from scratch, make sure you have a working Go 1.23+ workspace (instructions), then:

go install github.com/essentialkaos/rsz@latest

You can download prebuilt binaries for Linux and macOS from EK Apps Repository:

bash <(curl -fsSL https://apps.kaos.st/get) rsz

The latest version of rsz also available as container image on Docker Hub and GitHub Container Registry:

podman run --rm -it ghcr.io/essentialkaos/rsz:latest image.png 0.55 thumbnail.png
# or
docker run --rm -it ghcr.io/essentialkaos/rsz:latest image.png 0.55 thumbnail.png

Since version 1.2.0 you can update rsz to the latest release using self-update feature:

rsz --update

This command will runs a self-update in interactive mode. If you want to run a quiet update (no output), use the following command:

rsz --update=quiet

You can generate completion for bash, zsh or fish shell.

Bash:

sudo rsz --completion=bash 1> /etc/bash_completion.d/rsz

ZSH:

sudo rsz --completion=zsh 1> /usr/share/zsh/site-functions/rsz

Fish:

sudo rsz --completion=fish 1> /usr/share/fish/vendor_completions.d/rsz.fish

You can generate man page using next command:

rsz --generate-man | sudo gzip > /usr/share/man/man1/rsz.1.gz

Branch	Status
master
develop

Before contributing to this project please read our Contributing Guidelines.

Apache License, Version 2.0