By Michael Dobekidis
"Lately I have been using Phaser.io as a game framework/engine. And one thing that is quite tedius, is to manage your Sprites and animation frames, it is roughly 40% of your game development time.
However there is one tool that now -that officially supports Phaser- cuts down this time at least by 90%.
The tool is named TexturePacker and allows the load of all your assets and combines them very conveniently into a single Spritesheet and exports that Spritesheet along with a .json file that “tells” Phaser where to find each frame (based on coordinates on the spritesheet), this is called an atlasJSONHash/atlasJSONArray."