Phototonic is a fast and functional image viewer and organizer, inspired by the traditional image viewer design (i.e. thumbnails and viewer layouts).
Phototonic developed in C++/Qt and released under GNU General Public License v3.


  • Light weight with a smooth and clear user interface
  • Does not depend on any desktop environment
  • Supports several customized thumbnail layouts
  • Supports tagging images and filtering images by tags
  • Load thumbnails and browse images recursively on a folder tree
  • Dynamic thumbnails loading, enables fast browsing of very large folders
  • Filter thumbnails by name
  • Image navigation and file management
  • Slide show
  • Transformation: rotation, flipping, cropping, image mirroring and scaling
  • Adjust image brightness, saturation, hue and contrast
  • Keep transformations, zoom and colors while browsing multiple images
  • Extensive automatic and manual zoom options
  • Supported image formats: BMP, GIF, ICO, JPEG, MNG, PBM, PGM, PNG, PPM, SVG, SVGZ, TGA, TIFF, XBM, XPM
  • Supports GIF animations
  • Keyboard shortcuts and mouse behavior customization
  • Open images with external applications
  • Display image information and metadata
  • Rotate images and thumbnails automatically according to Exif orientation tag
  • Bookmarks
  • Find and manage duplicate images

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User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

User Reviews

  • Great! I just hate the whole gnome3 "philosophy" (and the resulting guis and features in the gnome3 apps), so i had to let gthumb go and look for a replacement. Found Phototonic, and it's just great, friendly gui, Qt integrates just fine with gtk-2 on xubuntu (at least 17.04 which i now have), etc. All in all, 5 starts from me.!

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Additional Project Details

Intended Audience

End Users/Desktop

User Interface


Programming Language