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OpenSeadragon 2.4.2


An open-source, web-based viewer for high-resolution zoomable images, implemented in pure JavaScript, for desktop and mobile.
OpenSeadragon Viewer With Default Settings
Image © 2012, Dario Morelli

See how people are using OpenSeadragon in the wild.

Examples & Features


Plugins can be used to enhance OpenSeadragon. The following plugins are currently available:

Browser Extension

OpenSeadragonizer enables viewing any image on a webpage with OpenSeadragon.

You can also use the web version of OpenSeadragonizer directly without installing anything.

Download & Install

You can get OpenSeadragon 2.4.2 through any of these venues:

For installation instructions, see the Getting Started page in the documentation.

For creating the tiles themselves, see Creating Zooming Images.

Older releases and source archives are available on GitHub.

API Documentation

Available on our documentation pages.


GitHub: issue tracker

Twitter: @OpenSeadragon

Chat: Gitter (also accessible via IRC)


OpenSeadragon is developed on GitHub. You can clone the source repository with Git by running:

git clone git://


OpenSeadragon is released under the New BSD license.