1 .\" Hey, EMACS: -*- nroff -*-
2 .TH VWEBP 1 "June 5, 2019"
4 vwebp \- decompress a WebP file and display it in a window
7 .RI [ options ] " input_file.webp
10 This manual page documents the
14 \fBvwebp\fP decompresses a WebP file and displays it in a window using OpenGL.
21 Print version number and exit.
24 Don't use the ICC profile if present.
27 Don't use the fancy YUV420 upscaler.
30 Disable in-loop filtering.
32 .BI \-dither " strength
33 Specify a dithering \fBstrength\fP between 0 and 100. Dithering is a
34 post-processing effect applied to chroma components in lossy compression.
35 It helps by smoothing gradients and avoiding banding artifacts. Default: 50.
38 By default, quantized transparency planes are dithered during decompression,
39 to smooth the gradients. This flag will prevent this dithering.
42 Fill transparent areas with the bitstream's own background color instead of
43 checkerboard only. Default is white for non-animated images.
46 Use multi-threading for decoding, if possible.
49 Display image information on top of the decoded image.
52 Explicitly specify the input file. This option is useful if the input
53 file starts with an '\-' for instance. This option must appear \fBlast\fP.
54 Any other options afterward will be ignored. If the input file is "\-",
55 the data will be read from \fIstdin\fP instead of a file.
58 .SH KEYBOARD SHORTCUTS
61 Toggle use of color profile.
64 Toggle display of background color.
67 Overlay file information.
70 Disable blending and disposal process, for debugging purposes.
76 Please report all bugs to the issue tracker:
77 https://bugs.chromium.org/p/webp
79 Patches welcome! See this page to get started:
80 http://www.webmproject.org/code/contribute/submitting-patches/
85 vwebp picture.webp -mt -dither 0
87 vwebp \-\- \-\-\-picture.webp
90 \fBvwebp\fP is a part of libwebp and was written by the WebP team.
92 The latest source tree is available at
93 https://chromium.googlesource.com/webm/libwebp
95 This manual page was written for the Debian project (and may be used by others).
100 Please refer to http://developers.google.com/speed/webp/ for additional