This program allows you to view BPG Images in Windows, Linux and macOS (format description: http://bellard.org/bpg/ ). Features:

• Large images are autoscaled to fit screen area
• Image transparency (Alpha-Channel) support
• Basic support for animated images
• Zoom In/Out
• Full screen mode
• 'Stay On Top' mode
• Support mouse dragging of the zoomed image
• Cyclic view of all images in the same directory
• Drag & drop support for files and folders
• Saving a copy of the opened file as a PNG file
• Saving a copy of the opened file
• Deleting the opened files
• Rotating the view (rotated view can be saved as a PNG file)
• In Windows (and Ubuntu Linux) you can open BPG files directly from explorer (installer creates file association)
• Embedded translations: Russian,English
• Thumbnails preview in Nautilus/Thunar/Dolphin (Ubuntu/Xubuntu/Kubuntu)
• Thumbnails preview in Windows Explorer (for Windows Vista or higher)
• Prebuilt DEB packages for x86 and x86-64 architectures (Ubuntu/Xubuntu/Kubuntu)
• Prebuilt macOS DMG package