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A library with various different scaling algorithms like scale2x, scale3x, hq2x, hq3x and hq4x.
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Scilter (A shorter name for Scale Filter) is a library which can be used to scale images with different algorithms.

The following algorithms are currently supported:

  • HQX magnification filter (2x, 3x and 4x) from Maxim Stepin.
  • Nearest Neighbor (2x, 3x and 4x)
  • scale2x and scale3x algorithms from Kevin Glass.

Scilter can also be used as a command line tool for scaling images.


This library is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.


The JAR can be downloaded from my Maven Repository or if you are using Maven you can simply add it as a dependency:

    <name>Ailis Maven Releases</name>

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