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Automatic image occlusion for Anki

No more drawing every box by hand. Upload slides, a PDF or a photo. Each label on a diagram is hidden under a box, and you guess what's underneath, one at a time.

Slides, PDFs and photos · 20 diagrams a month free, 300 on Pro

Free to start · Quote and source on every card

How it works

  1. UploadSlides, a PDF or a photo.
  2. Check the boxesMove, add or remove any box.
  3. DownloadOpens in Anki's own Image Occlusion.

From a real file to Anki cards

The file

A labelled diagram of the outer, middle and inner ear
Example file: NIH diagram of the ear

What AnkiDecks made

Made for diagrams

  • Labels found for you

    Each label on a diagram gets a box. Busy diagrams get the main structures first, at most 12 boxes.

  • Change any box

    Move, resize, add or remove boxes on the Review screen before you download.

  • Uses Anki's own Image Occlusion

    Cards open in Anki's built-in Image Occlusion (Anki 23.10 and newer): hide all, guess one.

  • Slides, PDFs and photos

    Diagrams are found on slide pictures, PDF pages and photos of a textbook. The rest of the lecture becomes Cloze and Basic cards.

Why not draw the boxes yourself?

Anki's own Image Occlusion is free and good. AnkiDecks does the drawing for you.

FeatureAnkiDecksAnki's own editor
Boxes drawn on every label for youYou draw each one
Many diagrams from one lecture at onceOne at a time
Hide all, guess one
Move, add or remove any box
Free20 diagrams a month

Free to start. Pro when you study every day.

Free is enough to try it on a few lectures. Pro covers one or two classes every week, Max every class.

Free

$0

  • 3 decks a month
  • Up to 15 pages per file
  • 20 image occlusion diagrams a month
Start free

Pro

For one or two classes

$7.99/ month

or $54.99 a year (5 months free)

  • 50 decks a month
  • Up to 100 pages per file
  • 300 image occlusion diagrams a month
  • Your decks are made first when it's busy
Get Pro

Cancel anytime

Big textbooks or every class? Max takes files up to 200 pages and unlimited decks. Compare plansExport to Anki is never paywalled.

Questions

Is it free?

Yes. Free includes 20 image occlusion diagrams a month, Pro 300. Downloading to Anki is never paywalled.

Which Anki version do I need?

Anki 23.10 or newer, which has Image Occlusion built in. The cards open in its editor, so you can still change them inside Anki.

Does it work with photos of a textbook?

Yes. A clear photo of a labeled diagram works. Straight, sharp and well lit gives the best boxes.

What if a box is wrong?

Move it, resize it or remove it on the Review screen, or add your own. Nothing goes into the deck until you download.

What about the Image Occlusion Enhanced add-on?

It was the usual way to make these cards before Anki 23.10 built Image Occlusion into Anki itself. With either one you draw each box by hand. AnkiDecks draws the boxes for you and makes cards for Anki's built-in Image Occlusion, so you don't need the add-on.

Can I hide one label at a time instead of all?

Cards use Anki's "hide all, guess one" mode: every label is covered and one is asked at a time.

Does it work on AnkiMobile and AnkiDroid?

Yes. You download a normal .apkg deck. It opens in Anki on a computer, AnkiMobile and AnkiDroid, with no add-ons. Image occlusion cards need Anki 23.10 or newer.

Image occlusion in Anki, explainedHow to turn lecture slides into Anki cardsCloze or Basic: which card when

Make cards from anything

Your diagrams, boxes already drawn

Upload a lecture with diagrams and check the boxes in a minute.

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