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author | June McEnroe <june@causal.agency> | 2018-09-11 22:08:54 -0400 |
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committer | June McEnroe <june@causal.agency> | 2018-09-11 22:08:54 -0400 |
commit | 324026700184917040f360aced5995856eea838f (patch) | |
tree | 648db1074e9b7d573fc2d56710711b9bf1eaa0c0 /bin/man/pngo.1 | |
parent | Rewrite gfx.7 and render plaintext README (diff) | |
download | src-324026700184917040f360aced5995856eea838f.tar.gz src-324026700184917040f360aced5995856eea838f.zip |
Move bin man pages to bin/man
Diffstat (limited to 'bin/man/pngo.1')
-rw-r--r-- | bin/man/pngo.1 | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/bin/man/pngo.1 b/bin/man/pngo.1 new file mode 100644 index 00000000..4ba8a624 --- /dev/null +++ b/bin/man/pngo.1 @@ -0,0 +1,56 @@ +.Dd September 7, 2018 +.Dt PNGO 1 +.Os "Causal Agency" +. +.Sh NAME +.Nm pngo +.Nd PNG optimizer +. +.Sh SYNOPSIS +.Nm +.Op Fl cv +.Op Fl o Ar file +.Op Ar +. +.Sh DESCRIPTION +.Nm +optimizes PNG files for size. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl c +Write to standard output. +.It Fl o Ar file +Write to +.Ar file . +.It Fl v +Output PNG header information. +.El +. +.Pp +.Nm +performs the following optimizations: +.Bl -bullet +.It +Discard ancillary chunks. +.It +Discard unnecessary alpha channel. +.It +Convert unnecessary truecolor to grayscale. +.It +Palletize color if possible. +.It +Reduce bit depth if possible. +.It +Apply a simple filter heuristic. +.It +Apply zlib's best compresion. +.El +. +.Sh SEE ALSO +.Xr glitch 1 +. +.Sh CAVEATS +.Nm +does not support interlaced PNGs. |