This is a simple JavaScript based image creator for LittleFS.
The purpose of it is to provide an easy-to-use solution to upload files to e.g. a Raspberry Pi Pico (RP2040) that can use this filesystem on its flash memory.
Visit the page to use it: https://hurzhurz.github.io/littlefs-image-creator/
It is based on Dreagonmon/littlefs-js.
Files lfs.js and lfs_js.js originate from a minimal modified release of it.