Simple, minimum, yet configurable photo viewer/slideshow/digital signage software for Windows, Linux, and macOS. Inspired by "feh" https://feh.finalrewind.org/

Windows version is available at the Microsoft Store.　

• Multiple viewing styles: 1. Normal window view, 2. "Windowless" inFrame view with slideshow, and 3. Fullscreen view with slideshow.
• Full keyboard and mouse playback control.
• Configurable options with command line parameters and popup menus.
• Supports multiple moniters.
• Files and folder drop support.

Windowless(inFrame) View (with slideshow) on Windows 11

Normal View on Windows 11

Normal View on Linux

ImageViewer can be launched by (1) double clicking the executable and selecting image files or (2) selecting image files or folders and using "send to" feature in Windows explorer (create "shortcut" file and place it to "shell:sendto" folder) or (3) command-line.

ImageViewer can be launched via command-line, and applications or scripts can also launch Image Viewer with following options.

• Start fullscreen mode at startup (default off):
  -f on or --fullscreen=on
-f off or --fullscreen=off

• Start inFrame mode at startup (default off):
  -s on or --inFrame=on
-s off or --inFrame=off

• Start/Force slideshow (default behavior: if single file is selected = off, if folder is selected = on):
  -a on or --slideshowAutoStart=on
-a off or --slideshowAutoStart=off

• Set slideshow interval in seconds (default 4 seconds):
  -i 4 or --interval=4

• Set slideshow random (default on):
  -r on or --random=on
-r off or --random=off

• Set slideshow repeat (default on):
  -e on or --repeat=on
-e off or --repeat=off

• Set slideshow transitional effect (default on):
  -t on or --effect=on
-t off or --effect=off

• Picture stretch In (fit to window/screen when the size is bigger than window/screen. default on):
  -n on or --stretchIn=on
-n off or --stretchIn=off

• Picture stretch Out (fit to window/screen when the size is smaller than window/screen. default off):
  -o on or --stretchOut=on
-o off or --stretchOut=off

• Load pictures in the sub folders as well when manually open a picture (default on):
  -u on or --includSubFolders=on
-u off or --includSubFolders=off

• Specify a moniter to show fullscreen slideshow (default 0 is the main moniter):
  -m 1 or --moniter=1

• Specify window should stay on top (default off):
  -y on or --stayOnTop=on
-y off or --stayOnTop=off

• Help shows command-line options.
  -h or --help

$ ImageViewer -i 2 -f on -o on -e off C:\Users\<USER>\Pictures\Wallpapers\

Feel free to open issues and send PRs. It is much appreciated.

You can download Lazarus IDE, the Delphi compatible cross-platform IDE and FPC(compiler) from here.

Or sudo apt install lazarus on Ubuntu.

Just open the project file ("ImageViewer.lpr") with Lazarus IDE and hit F9 and run. That's it!

If you are on Linux, you may need to change target platform. Main menu > Project > Project Options and Compiler Options > Config and Target menu, and then pick Target platform > Target OS "Linux", Target CPU family "x86_64" according to your system.

• Windows 11: Lazarus 2.2.2 FPC 3.2.2 x86_64-win64-win32/win64
• Windows 10: Lazarus 1.8.0 FPC 3.0.4 x86_64-win64-win32/win64
• Ubuntu 22.04.1 LTS: Lazarus 2.2.0 FPC 3.2.2 x86_64-linux-gtk2
• Ubuntu 17.10 (64bit): Lazarus 1.8.0 FPC 3.0.2 x86_64-linux-gtk2
• Ubuntu 16.04 LTS (64bit): Lazarus 1.9.0 trunk, FPC 3.0.4
• macOS 10.13.3 (64bit) High Sierra: Lazarus 1.8.0 rexported FPC 3.0.4 i386-darwin-carbon
• macOS 10.11.6 (64bit) El Capitan: Lazarus 1.9.0 carbon trunk, FPC 3.0.4

• @Nemo08 Russian translation.
• @quadroid File/folder drop and portable mode.

win32titlestyler.pas by @Alexey-T