How to Share a Flashcard Deck by Link

Sharing a flashcard deck sounds like it should be a one-click problem and rarely is. The person you’re sending it to doesn’t have the same app, or doesn’t want an account, or imports it and finds the formatting mangled. I build Fulin Flashcard, a free browser-based spaced-repetition tool, so I’ve spent more time than is healthy on this — and the conclusion is mostly boring: the method that works is the one your recipient doesn’t have to think about.

There are four real options. Which one you want depends on one question: are you sharing something finished, or something that will keep changing?

Option 1: A share URL

The deck is encoded in a link. You send the link, they open it, the cards are there.

Best for: handing a deck to one or two people quickly, especially people who don’t use flashcard apps and won’t install one to receive yours.

What it doesn’t do: carry your review history — and that’s correct behaviour, not a limitation. Your intervals encode what you are forgetting. Someone else inheriting your schedule would get cards they’ve never seen marked as well-known. They should start from level zero.

The catch: URLs have length limits, and a link-encoded deck gets long. This works well for a vocabulary list and badly for two thousand cards. Test the link yourself before you send it.

Option 2: An exported file — CSV or tab-separated text

You export the deck to a file, send the file, they import it.

Best for: anything that needs to last, and anything crossing between different apps. CSV opens in Excel, Sheets, and Numbers, imports into effectively every flashcard tool, and will still be readable long after any particular app is gone.

The gotcha worth knowing: commas inside your cards. If a definition contains a comma and the file isn’t quoted properly, columns shift and the deck arrives scrambled. This is the single most common cause of “the import didn’t work”. Tab-separated text avoids it almost entirely, because tabs rarely appear inside a card. If you have a choice, choose tabs.

Also: open the file in a spreadsheet before you send it. Thirty seconds of looking will catch the misalignment that would otherwise cost your recipient twenty minutes.

Option 3: A platform share inside one app

Quizlet, Anki’s shared decks, and similar systems have their own sharing built in.

Best for: when everyone involved already uses the same tool. It’s genuinely the smoothest path in that case.

The cost: everyone has to be in that ecosystem, usually with an account. If you’re sharing with a class where two people use Anki, three use Quizlet, and one uses nothing, this becomes the slowest option rather than the fastest.

Option 4: Share the spreadsheet, not the deck

Skip flashcard formats entirely. Put the cards in a shared spreadsheet and let each person import from it into whatever they use.

Best for: decks that will keep changing. This is the only one of the four that handles updates. If you add twenty cards next week, everyone re-imports from the same source rather than waiting for you to re-export and re-send.

Best for, also: study groups where people are building the deck together. A spreadsheet handles several people editing; a deck file does not.

The cost: an extra import step for each person, every time.

Choosing between them

• One-off, one recipient, no shared tooling? Share URL.
• Needs to last, or crossing apps? CSV or tab-separated file.
• Everyone on the same platform already? Use the platform’s own share.
• Deck will keep changing, or several people editing? Shared spreadsheet.

The mistake I see most is using option 3 by default because it’s the button that’s there, and then discovering half the group can’t open it. The mistake I see second-most is sharing a two-thousand-card deck at all — a deck that large is usually somebody else’s organisation of the material, and it rarely transfers. Cards you wrote yourself work better, for reasons I get into in how to make vocabulary flashcards that actually work. If you’re on the receiving end of a huge shared deck, the flashcard workload calculator will show you what its daily review load actually becomes before you commit to it.

A note on what you’re really sharing

Cards are the cheap part. What makes a deck good is the judgment inside it — which words earned a card, what the prompt asks, how much context is on the answer side. That’s not transferable by any file format, which is why importing a stranger’s thousand-card deck so often ends in abandoning it. Sharing works best between people studying the same material with the same goals, and worst as a shortcut past making your own cards.

How Fulin Flashcard handles this

Fulin Flashcard covers options 1, 2, and 4: you can download your vocabulary as a CSV, copy it as tab-separated text, or share it by URL. It’s free, runs in the browser, and the core workflow needs no account — decks and review state live in your browser’s local storage, which is why sharing is an explicit export rather than something that happens automatically through a server.

Two honest limitations. First, there’s no live-syncing shared deck: a link or a file is a snapshot, so if your cards keep changing, the shared-spreadsheet route is the better fit. Second, as of the last audit of the codebase I hadn’t verified a full backup-and-restore flow that preserves all review history — export moves your vocabulary, not your entire scheduling state. Since decks are stored locally, that’s worth knowing before you rely on it as your only copy: export occasionally. The Fulin Flashcard specification sets out exactly what the scheduler does and what the export contains.

Quick checklist

• Share URL for speed with people who don’t use flashcard apps.
• CSV or tab-separated file for longevity and cross-app moves — prefer tabs to dodge comma breakage.
• Open any exported file in a spreadsheet before sending it.
• Shared spreadsheet if the deck will keep changing or several people are editing.
• Review history doesn’t transfer, and shouldn’t — recipients should start fresh.
• Small decks you wrote transfer well; giant imported decks usually get abandoned.