A website that lists every image file in BFDI: Branches and Barfy's Adventure, usable for NPCs/UI and profile bios in the former and profile bios in the latter.
First, decompile Branches (there are tools for that), and create a decomp folder and put your decomp there (directly, so decomp/global.gd should exit). You'll also need a relatively recent version Node.js installed.
Then, in a command prompt, navigate to this repo's folder and run node generate.mjs.
For the Barfy's Adventure assets, same story, but with a ba_decomp folder and node generate_ba.mjs (But do make sure to decompile the game.pck file, not the launcher's BarfysAdventure.pck!).