Java Advanced Imaging ImageIO Tools

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This article captures current information about the Java Advanced Imaging ImageIO Tools to document exactly what files are involved.

The ImageIO Tools consist of two jar files plus one or more files which are in native code for the platform.

1 JAR Files

File nameDescriptionTypical Location
jai_imageio.jarJAR file containing core JAI Image I/O class filesjre/lib/ext
clibwrapper_jiio.jarcodecLib JNI interfacesjre/lib/ext

2 Native Libraries

File nameDescriptionPlatformTypical Location
libclib_jiio.somediaLib JNI shared librariesLinuxjre/i386
clib_jiio.dllcodecLib JNI shared librariesWindowsjre/bin
clib_jiio_sse2.dllmediaLib JNI DLL librariesWindowsjre/bin

3 Notes

  1. All the binary builds are available on
  2. The jar files are required.
  3. The dll/so files are optional.
  4. The dll/so files provide acceleration for certain image types.
  5. The dll/so files may also provide support for additional image types.
  6. You can force the ImageIO Tools not to use the native libraries by starting a program with this switch:

Much more information is available at