gThumb, the open-source image viewer and organizer, has undergone a major overhaul with its latest version, rewritten in Vala and ported to GTK4/libadwaita. The new design is significantly different from the previous iteration, making it barely recognizable.
An alpha build of gThumb 4.0 is now available for testing. This version not only updates the visual aesthetics but also introduces new functionalities, such as support for WEBP and PNG animations, image export in the JXL format, and a new censor filter for pixelation or blurring parts of images.
The most striking changes are visual. The transition from GTK3 to GTK4 offers a fresher look, but it’s the thoughtful implementation of the libadwaita widget set that helps meet the GNOME Human Interface Guidelines, ensuring a more consistent user experience across applications.
The improved spacing and clearer hierarchy of elements enhance UI readability, making it easier for users to locate options and keeing data presentation less cluttered. For instance, the properties sidebar now offers more space for information, making it less overwhelming.
Editing capabilities have also been revamped. Each editing tool and filter now has a labeled icon, allowing users to intuitively understand their functions without guessing.
One of the noteworthy new features is the censor filter, a tool that reflects trending functionalities found in other image viewers and editors.
While the Preferences section also received a redesign for better aesthetics and functionality, not all existing features have made the transition to the GTK4/libadwaita framework. The latest alpha version has removed features like web albums, contact sheets, and a tool for finding duplicate images, though there’s potential for their inclusion in future updates.
Despite advancements in cloud-based photo services, desktop management tools like gThumb remain relevant, particularly for users who prioritize privacy or prefer managing their collections without relying on large tech companies. For example, gThumb continues to serve as a friendly alternative to Ubuntu’s GTK3 photography app, Shotwell.
The alpha version is accessible for those interested in building it from source, or users can look for unofficial PPAs on Launchpad.
If you have been using gThumb, share your thoughts on this update. And if you’re a newcomer, does this redesign encourage you to give it a try?