Every card you add to any deck automatically appears in All Cards.

One card per line: french = english = note (the note is optional; a tab works instead of the first =).
Start a line with ## to name the deck the lines below it go into. A deck that doesn't exist yet is created. An emoji straight after ## becomes its icon. Lines starting with a single # are ignored. With no ## header, everything goes to the deck picked above.

Everything lives in this browser only. Export now and then — if you clear site data or change phone, this file is the only way back.

Add to Home Screen in Safari/Chrome for a full-screen app icon.