== What can ImageJ do? ==
ImageJ provides: * A [[Getting started #Fiji.27s_main_window|user interface ]] with functions to load, display, and save images. * A wealth of image analysis [[ techniques]] : [http://imagej.net/docs/guide/146-29.html#toc-Section-29 image processing], [[colocalization]], [[deconvolution]], [[registration]], [[segmentation]], [[tracking]], [[visualization]] and much more. * An extension mechanism including support for [[ plugins]] and [[ macros]]. * A vibrant, diverse, and helpful user [[community]] that gives rise to insightful scientific exchanges.
ImageJ's [[extensibility]] is the root of its effectiveness: many advanced image-processing methods are not provided by the core application, but rather are [[plugins]] written by specialists in specific fields, made available via [[update sites]].