tv - terminal viewer

interactive high fidelity terminal/console image viewer, using unicode, truecolor or sixels with slideshow and PDF integration

gnome-terminal, unicode truecolor

xterm, sixel, 16 colors (DEC VT340 terminals might be able to show this)

features

slide show with configurable timeout
16 color/gray sixel support, as for vt340 - as well as more colors for mlterm
linux framebuffer support
gamma correct (linear light resampling)
pan and zoom to fit, fill and width
JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC, PPM, PGM (using libjpeg, libpng and stb_image)
auto-detects sixel support, sixel support being useful for running the viewer on a server through ssh connections and get high resolution images viewed within the encrypted session.
on demand PDF page rasterization with external ghostscript (gs) binary
dithering, when used is the addition based variant of arithmetic dither

Space / backspace for moving through slides, +/- for zoom in and out, cursor keys to pan, S to toggle slideshow F to zoom to fit, W to zoom to width (and go top top - default for PDF pages.), j - jump to a specific frame number, shift-s to set slideshow delay, g to toggle grayscale, d to toggle dithering

$ tv --help
usage: tv [--help] [-w <width>] [-h <height>] -m <mode> [images]
options:
  --help  print this help
  -s <wxh> width x height
       the dimension is in pixels for sixel modes and in character
       cells for character based modes
  -o <thumbpath> write a thumbnail with -s' dimensions to thumb_path
  -d <delay_seconds> set number of seconds of sleep between images in slideshow
  -m <mode>  specify no or invalid mode to get a list of valid modes

source

Since my Patreon has been going well in its first week, I've pushed these sources to a public spot as well, ejoy :)

github.com/hodefoting/tv

download

x86 binary <900kb statically linked with musl, libpng and libjpeg - should work on most 32bit and 64bit x86 linux distros - download and chmod a+x tv, then ./tv to run it.

potential future development

deletion
rotation
live filtering
thumbnail generation/view
file system monitoring
gif animation support through libnsgif

mlterm, sixel, 256 colors palette, dithering using a-dither'

sixels are a six pixels per character DEC printer/terminal graphics format supported by some actual serial terminals, terminal emulators and printer. It permits showing images inline with text or even doing interactive graphics applications.