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Combine your Anki decks into one study set

Anki can merge decks by import or by moving cards between decks. DeckOwl can turn your own course files into one fresh deck with spaced repetition.

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When merging Anki decks makes sense

Students often end up with several Anki decks for one course, each made from a different lecture or chapter. Many people eventually ask whether they can combine Anki decks so that one review session covers everything without duplicate cards.

Check for duplicate cards before you merge so review time is not wasted.
Group cards by topic so related facts stay together in review sessions.
Keep the original decks as a backup until the combined deck has been tested.
Rebuild from source files when the old decks have inconsistent wording or formatting.

Example cell biology flashcards (common study topic)

Which organelle produces most of a cell's ATP?The mitochondrion, because cellular respiration in its inner membrane makes most of the cell's ATP.

What does the Golgi apparatus do?It modifies, sorts, and packages proteins and lipids for transport inside or outside the cell.

What is osmosis?The movement of water across a semipermeable membrane toward the side with higher solute concentration.

What is the function of ribosomes?They build proteins by translating mRNA into a chain of amino acids.

How do prokaryotic and eukaryotic cells differ?Prokaryotes lack a membrane-bound nucleus, while eukaryotes have one.

Generate the full set

Upload mixed sources

Add PDFs, DOCX files, slides, plain notes, or photos of pages to the same generation request.

Spaced repetition built in

Generated flashcards are scheduled for review so the combined deck keeps working after the merge.

Export when you need it

Send your deck to Anki on the Plus plan, where Anki export is included.

How it works

Export or list your existing decks

Note which decks hold overlapping cards so you know what to keep, remove, or rebuild.

Merge in Anki or upload your source files

Use Anki's import and Change Deck tools, or upload the original PDFs and notes to DeckOwl.

Review and export the combined deck

Check the generated cards, then study in the browser or export to Anki on Plus.

Anki handles this with its own tools. You can import one deck file into another, or select cards in the browser and use Change Deck to move them. Duplicates still need manual cleanup, and the result depends on how each deck was built.

If your original decks are messy, rebuilding can be faster than merging. DeckOwl reads your own PDFs, slides, notes, and photos and generates flashcards from that material, which gives you one clean deck to review.

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Frequently asked questions

How many cards should one combined deck hold?

There is no fixed limit that works for everyone. A deck you can review in your daily time budget is usually more effective than one so large that you skip sessions.

Should I merge decks by topic or by course?

Group by topic when you can, because related cards are easier to recall together. Keep course-level decks only if your exam covers them as one unit.

Does DeckOwl export to Anki?

Yes, Anki export is part of the Plus plan at $39/year or $7.99/month. The free plan lets you study in the browser, but exports are not included.

Do I need a credit card to start?

No. You can start on the free plan with 3 generations per month, and students get 40% off Plus with a school email.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.