Phaser 3 Atlas Packer
The Atlas Packer is a web-based tool for creating textured atlases of character sprites. With this tool, you can easily compile multiple images and reduce the atlas size.
To use the textured atlas maker, just import files from your local drive. Then, it will create a textured pack containing PNG and JSON files.
This tool is free and runs on HTML5 technology. As long as your device can open a modern browser, you don’t need to download any apps just to create a textured atlas.
Learn more about the tool here.