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.TH "GDAL-RASTER-RESIZE" "1" "May 06, 2025" "" "GDAL"
.SH NAME
gdal-raster-resize \- Resize a raster dataset
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Added in version 3.11.

.SH SYNOPSIS
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.EX
Usage: gdal raster resize [OPTIONS] <INPUT> <OUTPUT>

Resize a raster dataset without changing the georeferenced extents.

Positional arguments:
  \-i, \-\-input <INPUT>                                  Input raster dataset [required]
  \-o, \-\-output <OUTPUT>                                Output raster dataset [required]

Common Options:
  \-h, \-\-help                                           Display help message and exit
  \-\-json\-usage                                         Display usage as JSON document and exit
  \-\-config <KEY>=<VALUE>                               Configuration option [may be repeated]
  \-\-progress                                           Display progress bar

Options:
  \-f, \-\-of, \-\-format, \-\-output\-format <OUTPUT\-FORMAT>  Output format (\(dqGDALG\(dq allowed)
  \-\-co, \-\-creation\-option <KEY>=<VALUE>                Creation option [may be repeated]
  \-\-overwrite                                          Whether overwriting existing output is allowed
  \-\-size <width[%]>,<height[%]>                        Target size in pixels (or percentage if using \(aq%\(aq suffix) [required]
  \-r, \-\-resampling <RESAMPLING>                        Resampling method. RESAMPLING=nearest|bilinear|cubic|cubicspline|lanczos|average|mode (default: nearest)

Advanced Options:
  \-\-if, \-\-input\-format <INPUT\-FORMAT>                  Input formats [may be repeated]
  \-\-oo, \-\-open\-option <KEY>=<VALUE>                    Open options [may be repeated]
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.SH DESCRIPTION
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\fBgdal raster resize\fP can be used to resize a raster dataset without
changing the georeferenced extents.
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This subcommand is also available as a potential step of \fI\%gdal raster pipeline\fP
.SS Standard options
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.B \-f, \-\-of, \-\-format, \-\-output\-format <OUTPUT\-FORMAT>
Which output raster format to use. Allowed values may be given by
\fBgdal \-\-formats | grep raster | grep rw | sort\fP
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.B \-\-co <NAME>=<VALUE>
Many formats have one or more optional creation options that can be
used to control particulars about the file created. For instance,
the GeoTIFF driver supports creation options to control compression,
and whether the file should be tiled.
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May be repeated.
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The creation options available vary by format driver, and some
simple formats have no creation options at all. A list of options
supported for a format can be listed with the
\fI\%\-\-formats\fP
command line option but the documentation for the format is the
definitive source of information on driver creation options.
See \fI\%Raster drivers\fP format
specific documentation for legal creation options for each format.
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.B \-\-overwrite
Allow program to overwrite existing target file or dataset.
Otherwise, by default, \fBgdal\fP errors out if the target file or
dataset already exists.
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.B \-\-size <width[%]>,<height[%]>
Set output raster width and height, expressed in pixels,
or percentage if using the \fB%\fP suffix.
If the width or the height is set to 0, the other dimension will be guessed
from the computed resolution.
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.B \-r, \-\-resampling <RESAMPLING>
Resampling method to use. Available methods are:
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\fBnear\fP: nearest neighbour resampling (default, fastest algorithm, worst interpolation quality).
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\fBbilinear\fP: bilinear resampling.
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\fBcubic\fP: cubic resampling.
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\fBcubicspline\fP: cubic spline resampling.
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\fBlanczos\fP: Lanczos windowed sinc resampling.
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\fBaverage\fP: average resampling, computes the weighted average of all non\-NODATA contributing pixels.
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.SH GDALG OUTPUT (ON-THE-FLY / STREAMED DATASET)
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This program supports serializing the command line as a JSON file using the \fBGDALG\fP output format.
The resulting file can then be opened as a raster dataset using the
\fI\%GDALG: GDAL Streamed Algorithm\fP driver, and apply the specified pipeline in a on\-the\-fly /
streamed way.
.SH EXAMPLES
.SS Example 1: Resize a dataset to 1000 columns and 500 lines using cubic resampling
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.EX
$ gdal raster resize \-\-size=1000,500 \-r cubic in.tif out.tif \-\-overwrite
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.SS Example 2: Resize a dataset to half size using cubic resampling
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.EX
$ gdal raster resize \-\-size=50%,50% \-r cubic in.tif out.tif \-\-overwrite
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.SH AUTHOR
Even Rouault <even.rouault@spatialys.com>
.SH COPYRIGHT
1998-2025
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