flashdrop FAQ
Seven common questions about login-free sharing, CSV format, and progress.
Frequently asked questions
Do I need to sign up or log in?
No. flashdrop lets you build and share a deck with no account. The deck data is packed into the share URL itself rather than a server, so anyone you send the link to can open it and study the same set instantly. Each person’s study progress is saved only in their own browser.
What CSV format should I use?
One card per line: column 1 is the front, column 2 is the back, and column 3 is an optional tag. Example: apple,사과,fruit. Use commas or tabs; wrap a cell in double quotes if it contains commas, quotes, or line breaks. Saving as CSV UTF-8 from Excel or pasting spreadsheet cells both work automatically.
What if the share link gets too long?
Bigger decks make longer links. flashdrop compresses the deck with lz-string, but a few hundred cards can still exceed what some messengers accept. When the builder warns that the link is long, split the deck by topic or unit and share several shorter links instead of one huge one.
What is SM-2 spaced repetition?
SuperMemo-2 is an algorithm that shows a card you got right at growing intervals and brings a missed card back the next day. Each card keeps an ease factor so easy cards space out quickly and hard ones repeat often. The Again, Hard, Good, and Easy buttons map directly to these SM-2 grades.
Where is my study progress stored?
Progress is saved only in your browser’s localStorage and is never sent to a server. Reopen the same link on the same device and browser, and you continue where you left off. Incognito mode, other devices, or clearing browser data will not carry it over, so export the weak cards as CSV if you need a backup.
How is this different from Quizlet or Anki?
Quizlet now requires an account to create decks and has pushed harder on paid tiers, while Anki is powerful but needs installation and is awkward to share on the web. flashdrop focuses on instant, login-free sharing through a single URL, which suits tutors sending word lists over chat.
Does my word-list file get uploaded to a server?
No. Parsing the file, building the deck, and studying all happen entirely inside your browser. Your uploaded CSV is never sent to a server, and the deck exists only inside the share link. The operator cannot see or store the contents of your word list, and no data beyond ads is collected.