Flash It works from one spreadsheet, used in two steps: download the template, then upload that same file back in once it's filled out. Nothing is typed into WebToolChest directly — your spreadsheet is the save file, the whole way through.
Open it in Google Sheets or Excel and fill in your cards. Then save or export that same file as .xlsx or .csv — don't create a new file, just save your changes to this one.
Upload the file you just filled in and saved — it's the same file from Step 1, now with your cards in it.
Free tier keeps one deck at a time — uploading a new sheet replaces it. Cygnus Connect unlocks multiple named deck slots you can switch between instantly, no re-upload needed.
Study
Upload a filled-in sheet, then press Flash It to shuffle your deck and start studying.