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ImageJ is a public domain Java image-viewing and -processing program. It runs either as an online applet or as a downloadable application, on any computer with a Java 1.6 or later virtual machine, and can provide image analytics and basic editing functions.

What's New

Version 1.50i:
  • The ImageJ website (imagej.nih.gov/ij) will soon start using encryption incompatible with Java so sample images and updates are now downloaded from wsr.imagej.net and URLs used to open images and text files are redirected to mirror.imagej.net.
  • Added the is("global calibration") macro function.
  • Added the RoiManager.rename(index,name) method.
  • Fixed a bug more...


  • OS X 10.5 or later
  • Java 1.6 or later

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Current Version (1.x)


Downloads 82,720
Version Downloads 650
License Updater
Date 28 Mar 2016
Platform Intel 64 / OS X / Intel 32
Price Free
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