VWEBP(1)                                General Commands Manual                                VWEBP(1)

NAME
       vwebp - decompress a WebP file and display it in a window

SYNOPSIS
       vwebp [options] input_file.webp

DESCRIPTION
       This manual page documents the vwebp command.

       vwebp decompresses a WebP file and displays it in a window using OpenGL.

OPTIONS
       -h     Print usage summary.

       -version
              Print version number and exit.

       -noicc Don't use the ICC profile if present.

       -nofancy
              Don't use the fancy YUV420 upscaler.

       -nofilter
              Disable in-loop filtering.

       -dither strength
              Specify a dithering strength between 0 and 100. Dithering is a post-processing effect ap‐
              plied to chroma components in lossy compression.  It helps  by  smoothing  gradients  and
              avoiding banding artifacts. Default: 50.

       -noalphadither
              By  default,  quantized  transparency planes are dithered during decompression, to smooth
              the gradients. This flag will prevent this dithering.

       -mt    Use multi-threading for decoding, if possible.

       -info  Display image information on top of the decoded image.

       -- string
              Explicitly specify the input file. This option is useful if the input file starts with an
              '-'  for instance. This option must appear last.  Any other options afterward will be ig‐
              nored. If the input file is "-", the data will be read from stdin instead of a file.

       KEYBOARD SHORTCUTS

       'c'    Toggle use of color profile.

       'i'    Overlay file information.

       'd'    Disable blending and disposal process, for debugging purposes.

       'q' / 'Q' / ESC
              Quit.

BUGS
       Please report all bugs to the issue tracker: https://bugs.chromium.org/p/webp
       Patches welcome! See this page to get  started:  http://www.webmproject.org/code/contribute/sub‐
       mitting-patches/

EXAMPLES
       vwebp picture.webp
       vwebp picture.webp -mt -dither 0
       vwebp -- ---picture.webp

AUTHORS
       vwebp is a part of libwebp and was written by the WebP team.
       The latest source tree is available at https://chromium.googlesource.com/webm/libwebp

       This manual page was written for the Debian project (and may be used by others).

SEE ALSO
       dwebp(1)
       Please refer to http://developers.google.com/speed/webp/ for additional information.

                                           November 25, 2016                                   VWEBP(1)

Usage: vwebp in_file [options]

Decodes the WebP image file and visualize it using OpenGL
Options are:
  -version ..... print version number and exit
  -noicc ....... don't use the icc profile if present
  -nofancy ..... don't use the fancy YUV420 upscaler
  -nofilter .... disable in-loop filtering
  -dither <int>  dithering strength (0..100), default=50
  -noalphadither disable alpha plane dithering
  -mt .......... use multi-threading
  -info ........ print info
  -h ........... this help message

Keyboard shortcuts:
  'c' ................ toggle use of color profile
  'i' ................ overlay file information
  'd' ................ disable blending & disposal (debug)
  'q' / 'Q' / ESC .... quit