Free
Absolutely Free
ImageJ overview
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 in version 1.54g
Updated on Dec 04 2023
- Thanks to Yuekan Jiao, added a "16-bit histogram" option to the Image>Adjust>Threshold dialog and a '16-bit' option to the setAutoThreshold() macro function and the ImagePlus.setAutoThreshold(String) method. When this option is enabled, the full 16-bit histogram is used to calculate the threshold of 16-bit images (example).
- Thanks to Eyal Rozenberg, the File>Import>Raw command uses the directory name as the image title when the "Open all files in folder" option is enabled.
- Thanks to Zoltan Kis, the Process>Noise>Remove Outliers tools uses sliders for setting the radius and threshold.
- Thanks to Nicolas De Francesco and Curtis Rueden, the macro language documentation (functions.html) is now included in ij.jar and is used by the Editor's Macros>Function Finder command.
- Thanks to Robert Baer, the "Associate 'Show All' ROIs with slices" option in the ROI Manager's More>>Options dialog is now always enabled when ImageJ starts up.
- Thanks to Christian Tischer, files with an "ome.tif" or "ome.tiff" extension are opened using Bio-Formats.
- Thanks to Fred Damen and Michael Schmid, the ImageProcessor.getSliceNumber() method returns the stack position when not called from a PlugInFilter.
- Thanks to Fred Damen, added the Dialog.getLocation(x,y) macro function.
- Thanks to Philippe Carl, added the RoiManager.setPosition(c,z,t) macro function.
- Thanks to Fred Damen, the second argument of the Dialog.addDirectory(label,defaultdir) function is no longer ignored when the user clicks on the "Browse" button.
- Thanks to 'Phiir42', fixed bug with closed tables reopening after a macro finishes.
- Thanks to 'Ender', fixed headless mode "Scale Bar" and "Show Info" bugs.
- Thanks to Michael Schmid, fixed ImageCanvas.fitToWindow() bug with very small images or user resized windows (example).
- Thanks to Michael Ellis and Michael Schmid, fixed a RotatedRectRoi rounding bug and a bug where newly created RotatedRectRois consisted of 5 points instead of 4.
- Thanks to Volker Backer, fixed a Roi group bug with Fiji on Linux.
- Thanks to Yuekan Jiao and Michael Schmid, fixed a rounding error with PointRoi.getContainedPoints().
- Thanks to Guenter Pudmich, fixed a 1.54d regression that caused 16-bit grayscale PNGs to be opened incorrectly.
- Thanks to Saleh Altahini, fixed bug with opening ImspectorPro MSR files.
Information
App requirements
- Intel 64
- OS X 10.8 or later
- Version for Apple Silicon
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User Ratings
Jul 13 2020
Version: 1.53
Does ImageJ work on mac OS Catalina? I'm going to buy the new macbook air and I need use ImageJ
Jul 22 2015
Version: 1.50a
it is a VERY important application but it doe snot work on OS X 10.11!
May 8 2015
Version: 1.49s
ImageJ deserves your continued appreciation. I'm in a physics department. ImageJ is widely used by our students in both physics and astronomy contexts. It is loaded on well over 50 computers in the department. It gets used in labs, research, and homework. Some of the time it is used for cosmetics (minor image processing, addition of graphical elements such as circles and arrows). Sometimes it is used analytically. As much as we use it, I'm sure we have only touched on its breadth and depth.
It is free, actively maintained, and widely appreciated in the scientific community. Stable, extremely functional, and not hard to learn. Do not be put off by its lack of glitz. It is a gem.
Jun 26 2012
Version: 1.46r
I really wish I knew about this app when I was in college. Apart from professional image analysis and general editing, it can be very helpful for students in signal processing/image processing to understand how transforms and filters work.
Thanks to the devs.
Aug 21 2011
Version: 1.45m
perfect software for all.
from the scientist POV imagej allows us to handle, process and analyse microscope data without the need for prohibitably expensive and sometimes unstable software.
for the non-scientist it can be used for all your image needs including scripting for batch processing.
Nov 27 2010
Version: 1.44j
Perhaps the most hideously designed software ever written.
Aug 23 2010
Version: 1.44f
You can't actually download 1.44f directly. Use the instructions at the following link to upgrade your copy:
http://rsb.info.nih.gov/ij/upgrade/
Feb 28 2010
Version: 10.2
actually, the downloaded version is Version 1.43r already.
Apr 17 2008
Version: 1.4d
Excellent work in the public domain. This is the kind of tool you NEED when you are in image processing and want to analyze a new type of image. This saves time and resources, since it provides all functionality I would usually find in either expensive image processing suites or environments, such as Matlab. Congrats to the developers!
Jul 29 2006
Version: 1.3.7m
I found it to be extremely buggy. It wasn't able to access an image on the clipboard at all when no other Mac app had a problem with the clipboard image.
Then when opening a JPEG of aprox. 2500x1900 it threw an out of memory error, which is an absolute joke on a 768MB system that had 160MB free at the time. Considering Preview.app opened the same image flawlessly, what gives?
I would give it thumbs down. Maybe wait until they do a Cocoa/Java port? Who knows. It just doesn't feel very polished at this point.
Nov 10 2004
Version: 1.33p
Thanks for this Java program. It's easy to use and it's fast.
May 1 2004
Version: 1.32i
Madena is much better. More controls, better interface, faster and the same price (Free).
Still ImageJ might have its uses (primarilly if you are operating on a cross plaform basis). Either provide control and manipulation of 16-bit level data in either TIFF or DICOM files. Something GIMP can NOT do.
Free
Absolutely Free
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