# `gdal raster resize`

Added in version 3.11.

Resize a raster dataset without changing the georeferenced extents.

## Synopsis

    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 ("GDALG" 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 '%' 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]

## Description

gdal raster resize can be used to resize a raster dataset without changing the georeferenced extents.

This subcommand is also available as a potential step of gdal raster pipeline

### Standard options

-f, --of, --format, --output-format <OUTPUT-FORMAT>

  Which output raster format to use. Allowed values may be given by `gdal --formats | grep raster | grep rw | sort`

--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.

  May be repeated.

  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 --formats command line option but the documentation for the format is the definitive source of information on driver creation options. See Raster drivers format specific documentation for legal creation options for each format.

--overwrite

  Allow program to overwrite existing target file or dataset. Otherwise, by default, gdal errors out if the target file or dataset already exists.

--size <width[%]>,<height[%]>

  Set output raster width and height, expressed in pixels, or percentage if using the `%` suffix. If the width or the height is set to 0, the other dimension will be guessed from the computed resolution.

-r, --resampling <RESAMPLING>

  Resampling method to use. Available methods are:

  `nearest`: nearest neighbour resampling (default, fastest algorithm, worst interpolation quality).

  `bilinear`: bilinear resampling.

  `cubic`: cubic resampling.

  `cubicspline`: cubic spline resampling.

  `lanczos`: Lanczos windowed sinc resampling.

  `average`: average resampling, computes the weighted average of all non-NODATA contributing pixels.

## GDALG output (on-the-fly / streamed dataset)

This program supports serializing the command line as a JSON file using the `GDALG` output format. The resulting file can then be opened as a raster dataset using the GDALG: GDAL Streamed Algorithm driver, and apply the specified pipeline in a on-the-fly / streamed way.

## Examples

### Example 1: Resize a dataset to 1000 columns and 500 lines using cubic resampling

    $ gdal raster resize --size=1000,500 -r cubic in.tif out.tif --overwrite

### Example 2: Resize a dataset to half size using cubic resampling

    $ gdal raster resize --size=50%,50% -r cubic in.tif out.tif --overwrite