man/cwebp.1: refine near-lossless text

Change-Id: Ida25a8979b689ae798b01b40c0842912631bd60c
This commit is contained in:
James Zern 2019-01-11 22:55:24 -08:00
parent 561cdce5bd
commit 666bd6c654

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@ -1,5 +1,5 @@
.\" Hey, EMACS: -*- nroff -*-
.TH CWEBP 1 "January 20, 2017"
.TH CWEBP 1 "January 11, 2019"
.SH NAME
cwebp \- compress an image file to a WebP file
.SH SYNOPSIS
@ -41,10 +41,12 @@ the invisible pixel values (R/G/B or Y/U/V) will be preserved only if the
\-exact option is used.
.TP
.BI \-near_lossless " int
Use near\-lossless image preprocessing. This option adjusts pixel values
to help compressibility, but has minimal impact on the visual quality.
It triggers lossless compression mode automatically.
Range is 0 (maximum preprocessing) to 100 (no preprocessing, the default).
Specify the level of near\-lossless image preprocessing. This option adjusts
pixel values to help compressibility, but has minimal impact on the visual
quality. It triggers lossless compression mode automatically. The range is 0
(maximum preprocessing) to 100 (no preprocessing, the default). The typical
value is around 60. Note that lossy with \fB\-q 100\fP can at times yield
better results.
.TP
.BI \-q " float
Specify the compression factor for RGB channels between 0 and 100. The default