Gem of the Week

ImageGlass – versatile image viewer

This is a new series where I hand-pick an open source Linux application each week that has not previously been covered on LinuxLinks. Each application must meet a very high standard.

ImageGlass is billed as a lightweight, versatile image viewer with a clean, modern interface. The program supports more than 90 image formats including WEBP, GIF, SVG, PNG, JXL and HEIC.

ImageGlass isn’t a new project. Although it’s open source software, it was not previously available for Linux. I contacted the developer in February 2023 to ask whether Linux support was planned, and they told me that ImageGlass 10, including Linux support, would take another two to three years to complete.

ImageGlass 10 beta 1 is now available. It has been completely rewritten from the ground up using a modern .NET stack and the Avalonia UI framework. This change allows the application to move beyond Windows and run natively on multiple platforms including Linux from a single unified codebase.

Installation

The project provides a deb package for Debian/Ubuntu based distributions.

ImageGlass installation

Installation proceeds without a hitch.

In Operation

This is what you’ll see at startup.

From left to right, the toolbar lets you view the previous image, view the next image, auto zoom, lock zoom ratio, scale to width, scale to height, scale to fit, scale to fill, refresh, turn off/on the gallery panel, turn off/on checkerboard background, full screen mode, and move to recycle bin. The final two icons let you open a file and access the main menu.

In the next image, I’ve loaded an image with the gallery panel showing at the bottom.

ImageGlass image viewer
Click image for full size

Key Features

  • Supports more than 90 image formats including WEBP, GIF, SVG, PNG, JXL and HEIC.
  • Runs natively on Linux with the cross-platform ImageGlass 10 codebase.
  • Offers a clean, intuitive interface designed for fast image viewing.
  • Includes customization options such as themes, languages and icon packs.
  • Provides flexible layout and toolbar configuration.
  • Can integrate with third-party apps for an extended workflow.

Summary

ImageGlass is definitely worth trying. It’s a fast image viewer that offers broad image format support, a polished interface, and decent customisation options. I also know that many LinuxLinks readers use multiple platforms, so being able to run the same software across different operating systems is a real advantage. As a cross-platform image viewer, ImageGlass clearly delivers on that front.

I hope the developer adds installation options beyond the current DEB package for Ubuntu and Debian. An AppImage or Flatpak would make the software much easier for users of other distributions to test and use.

There are some limitations when running ImageGlass on Linux. Most of them are fairly minor, although I would particularly like to see the frameless mode already available on Windows and macOS brought to Linux. As the software is still in beta, I also experienced a few crashes during testing.

The software is quite heavy on system resources. ps_mem reports memory usage of more than 730 MB, so that’s worth bearing in mind if you’re running Linux on a machine with limited RAM.

Website: github.com/d2phap/ImageGlass
Support:
Developer: Duong Dieu Phap
License: GNU General Public License v3.0


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Read our verdict in the software roundup.


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