Download

Get the files from the latest release on GitHub. Each release has:

File	For
glimt_…_amd64.deb	Debian, Ubuntu: also the menu entry, icon and man page
glimt-…x86_64.rpm	Fedora, RHEL: the same
glimt-…-x86_64-linux.tar.gz	Other distributions: the binary and the files to install
glimt-…-x86_64.AppImage	One file, nothing to install
glimt-…-x86_64.flatpak	Any distribution with Flatpak

All have every format built in. All but the Flatpak run on systems with glibc 2.28 or newer (RHEL 8, Debian 10, Ubuntu 20.04 and later).

sudo apt install ./glimt_*_amd64.deb          # Debian, Ubuntu
sudo dnf install ./glimt-*.x86_64.rpm         # Fedora, RHEL

tar xzf glimt-*-x86_64-linux.tar.gz           # elsewhere
./glimt-*-x86_64-linux/glimt

chmod +x glimt-*-x86_64.AppImage              # one file
./glimt-*-x86_64.AppImage

flatpak install --user ./glimt-*-x86_64.flatpak

The AppImage mounts itself with FUSE, as most desktops have; without it, ./glimt-…AppImage --appimage-extract-and-run works too.

For video, HEIC and AVIF, install ffmpeg as well, and sqlite3 to import Lightroom catalogs; the .deb and .rpm recommend all three. zenity gives the file dialogs. Other formats (DICOM, FITS, microscope files …) come through decoder plugins.

Check a download

SHA256SUMS in the release has the checksum of every file, and each file has a build provenance, signed by GitHub, that says the repository's release workflow built it:

sha256sum -c SHA256SUMS --ignore-missing
gh attestation verify glimt_*_amd64.deb -R thornbux/glimt

From source

Glimt is Rust (1.95 or newer) and needs no development packages for graphics:

git clone https://github.com/thornbux/glimt && cd glimt
cargo build --release --features full
./target/release/glimt ~/Pictures

The README lists the optional features.