'\" t
.\"     Title: djxl
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 06/27/2023
.\"    Manual: \ \&
.\"    Source: \ \&
.\"  Language: English
.\"
.TH "DJXL" "1" "06/27/2023" "\ \&" "\ \&"
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.SH "NAME"
djxl \- decompress JPEG XL images
.SH "SYNOPSIS"
.sp
\fBdjxl\fR [\fIoptions\fR\&...] \fIinput\&.jxl\fR [\fIoutput\fR]
.SH "DESCRIPTION"
.sp
djxl decompresses a JPEG XL image or animation\&. The output format is determined by the extension of the output file, which can be \&.png, \&.jpg, \&.ppm, \&.pfm\&. If the JPEG XL input file contains an animation, multiple output files will be produced, with names of the form "\fIoutput\fR\-\fBframenumber\fR\&.ext"\&.
.SH "OPTIONS"
.PP
\-h, \-\-help
.RS 4
Displays the options that
djxl
supports\&.
.RE
.PP
\-j, \-\-pixels_to_jpeg
.RS 4
By default, if the input JPEG XL contains a recompressed JPEG file, djxl reconstructs the exact original JPEG file if the output file has the
\&.jpg
(or
\&.jpeg) filename extension\&. This flag causes the decoder to instead decode the image to pixels and encode a new (lossy) JPEG in this case\&.
.RE
.PP
\-q \fIquality\fR, \-\-jpeg_quality=\fIquality\fR
.RS 4
When decoding to
\&.jpg, use this output quality\&. This option implicitly enables the \-\-pixels_to_jpeg option\&.
.RE
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf
# Decompress a JPEG XL file to PNG
$ djxl input\&.jxl output\&.png

# Reconstruct a losslessly\-recompressed JPEG file
$ djxl lossless\-jpeg\&.jxl reconstructed\&.jpeg
.fi
.if n \{\
.RE
.\}
.SH "SEE ALSO"
.sp
\fBcjxl\fR(1)