libvips/man/im_png2vips.3

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.TH IM_PNG 3 "3 Jan 2003"
.SH NAME
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im_png2vips, im_png2vips \- convert PNG images to and from VIPS format
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.SH SYNOPSIS
#include <vips/vips.h>
int im_png2vips( const char *filename, IMAGE *out )
int im_vips2png( IMAGE *in, const char *filename )
.SH DESCRIPTION
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.B im_png2vips(3)
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reads the png image in filename, and writes the image out
in VIPS format.
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.B im_vips2png(3)
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reads the image in and writes a PNG file to the specified
filename. The filename may include an optional mode string, following a ':'
character, which you can use to specify compression and interlace.
The mode string has the following syntax:
<compression>,<interlace>
where <compression> is an integer between 0 and 9 specifying the amount of
compression (6 is the default), and <interlace> is 0 for no interlace (this is
the default) and 1 for ADAM7 interlace.
Beware that writing an interlaced image is potentially up to 7 times slower
than writing a non-interlaced image.
The image is automatically converted to RGB or Monochrome (with an optional
alpha channel) before saving.
.SH EXAMPLES
The call:
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im_vips2png fred.v fred.png
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Writes a compression 6, uninterlaced PNG image.
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im_vips2png fred.v fred.tif:,1
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Writes an interlaced image.
.SH SEE ALSO
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im_open(3), im_vips2tiff(3)
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.SH COPYRIGHT
Hey, you want this? You have it!