I'm porting a game developed using Phaser to Roku (streaming box) and I needed to change some of the sprite sheets, so I got TexturePacker but was surprised that it does not have an option to read the json file and split back the sheet into all the separate frames.
Then I decided to create a quick app to do that, get the json and the png and unpack the frames png files into a folder.
It was very useful to me so I decided to open it to the community:
https://github.com/lvcabral/PhaserSpriteSheetUnpacker/releases