This tool is no longer needed, users can install WipperSnapper directly from Adafruit IO now. As such, we've deactivated this tool and unpublished its static page. Original README follows...
A JavaScript tool for generating a LittleFS Partition with Credentials for WipperSnapper.
A live copy of the tool is hosted here: https://adafruit.github.io/WipperSnapper_Firmware_Uploader/