Leshy SpriteSheet Animator

is an HTML5 tool for previewing and testing sprite sheet animations. For documentation, see the introduction blog post. A follow up blog post discusses the file formats and support for exporting to CreateJS/EaselJS and ImpactJS. Notes on support for the ImpactJS animation-importer plugin can be found here.
     To add sprite sheets (PNG) or load save files (JSON,) drag and drop the files onto this window. The UI is optimized for desktop browsers.  (v1.1.0, updated 1/09/14)
Intro & Help Export Formats Changelog