gthumb

gthumb [OPTIONS...] [FILES/DIRECTORIES...]

--help
    Displays gThumb's help options, including common and application-specific options.

--version
    Outputs the gThumb application version information and exits.

--browser
    Starts gThumb directly in browser mode, showing your image collection.

--viewer
    Starts gThumb in viewer mode, typically showing the first specified image.

--fullscreen
    Launches gThumb in a full-screen view, ideal for presentations or immersive viewing.

--slideshow
    Initiates a slideshow of the provided images or the current directory's contents.

--geometry=WIDTHxHEIGHT+X+Y
    Sets the initial size and position of the gThumb window.

--show-editor
    Opens gThumb with the image editor panel activated for quick adjustments.

--import
    Opens the image import wizard to transfer photos from devices or folders.

--new-window
    Forces gThumb to open in a new window, even if an instance is already running.

--select-album=ALBUM_NAME
    Opens gThumb directly to the specified album.

--select-tag=TAG_NAME
    Filters the view to show only images associated with the given tag.

--disable-metadata-cache
    Prevents gThumb from using its metadata cache, potentially useful for debugging or when metadata changes frequently outside gThumb.

gThumb is a powerful and versatile image viewer, browser, and organizer designed for the GNOME desktop environment. It provides a comprehensive set of features for managing and interacting with digital photographs. Users can easily browse their image collections, organize photos into albums, apply tags for efficient categorization, and locate images by various criteria.

Beyond basic viewing, gThumb includes essential image editing capabilities such as rotating, cropping, resizing, color adjustment, and red-eye removal. It also supports importing images from cameras or external devices, batch renaming, converting image formats, and creating web albums. Its intuitive interface makes it suitable for both casual viewing and more organized photo management. gThumb aims to be a complete solution for digital photography needs within the GNOME ecosystem, balancing ease of use with rich functionality. It supports a wide array of image formats, including JPEG, PNG, GIF, TIFF, and RAW formats through specific libraries.

While gThumb offers robust basic editing, it is not a substitute for professional-grade image manipulation software like GIMP or Photoshop. Its performance with extremely large, unindexed collections might be slower, and RAW file support relies on external libraries (like libraw), which may require additional installation or configuration for optimal performance with all camera models.

gThumb supports various plugins that extend its functionality, such as importing from specific online services, exporting to web galleries, and advanced batch operations. These plugins enhance its versatility beyond the core application.

gThumb extensively uses image metadata (EXIF, IPTC, XMP) for organizing, searching, and displaying information about photos. It allows users to view and some cases edit this metadata, which is crucial for professional and amateur photographers alike.

gThumb has been a staple in the GNOME desktop environment since its early days, initially developed by Paolo Bacchilega. It emerged as a user-friendly alternative to more complex image viewers and a more structured photo manager than simple file browsers. Over the years, gThumb has undergone significant development, adapting to changes in GTK+ toolkits (moving from GTK2 to GTK3 and GTK4) and integrating deeper with the GNOME ecosystem's evolving design principles. Its development has consistently focused on balancing intuitive usability with expanding features for image viewing, organizing, and light editing, making it a reliable choice for GNOME users for over two decades.

eog(1), shotwell(1), feh(1), convert(1), gimp(1)