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gThumb 4.0 porting to GTK-4 & LibAdwaita Image Viewer / Organizer
Quoting: gThumb 4.0 porting to GTK-4 & LibAdwaita Image Viewer / Organizer | UbuntuHandbook —
gThumb, the free open-source image viewer and organizer, is finally porting to GTK4 plus LibAdwaita.
With version 4.0 alpha, the user interface has been rewritten in Vala that looks modern and native in recent GNOME based distros, such as Ubuntu and Fedora Workstation.
OMG Ubuntu:
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gThumb is barely recognisable in its GTK4/libadwaita port - OMG! Ubuntu
An alpha build of gThumb 4.0 is available for testing. Alongside the visual revamp, this brings support for WEBP and PNG animations, lets you export images in the JXL format and includes a censor filter to pixelate or blur out parts of an image.
But it’s the visual changes that mark this update out. Sure, any port from GTK3 to GTK4 will add a visage of modernity, but it’s not a “automatically looks amazing” situation (case in point: the GTK4 gtk-software-properties app in 26.04).
Making use of the libadwaita widget set and thoughtfully applying it it (i.e., taking note of the GNOME HIG for pointers) is what makes modern apps designed for GNOME look so consistent.