Turn a textbook page into flashcards

Take a photo that scans well

Text recognition works best when the page looks as close as possible to a clean, flat document. A few habits make a big difference.

• Use even light. Daylight from a window or a ceiling lamp works well; avoid your own shadow falling across the page.
• Watch for glare. Glossy textbook paper reflects light, so tilt the phone slightly if you see a bright spot over the words.
• Flatten the page. Press the book open so lines near the spine aren’t curved, or hold the edge down with one hand.
• Hold the phone parallel to the page and fill the frame with the vocabulary area, not the whole double page.
• Keep it sharp. Tap to focus and hold still for a moment; blurry letters are the most common reason for errors.
• One list per photo. If a page mixes a vocabulary box with exercises, frame just the box.

Columns, tables and tilted photos

Most textbooks print vocabulary in two or three columns: the word, sometimes an example or phonetic spelling, and the translation. The tricky part for any scanner is matching each word to the right translation, especially when an entry wraps onto a second line.

Cardfox is built for this layout. According to its description, it recognizes each word and its translation, even in columns and on tilted photos, and you can also pick an existing photo or open a PDF instead of using the camera. Even so, a straight, well-lit photo gives any recognition the best chance.

Check the results before saving

No scanner is perfect, so take a minute to review the list before it turns into cards. It’s much faster to fix an entry now than to stumble over a wrong card in three weeks.

• Compare a few entries with the book, especially long phrases and words with accents or umlauts.
• Deselect anything you don’t want to learn, such as headings, page numbers or words you already know.
• Check which side is which. If the foreign word ended up on the back, swap sides.
• Keep articles and plural forms with nouns if your teacher expects them, for example “der Hund, die Hunde”.

Organize decks by unit

A deck per textbook unit (or chapter) keeps things easy to find and matches how most school tests are set: “Unit 4 vocabulary on Thursday.” You can still study all units together later, but separate decks let you focus on what’s coming up.

Give each deck a clear name like “English – Unit 4” or “Spanish B1 – Lección 7”. If you learn several subjects, colors help you tell them apart at a glance. In Cardfox, decks can have their own color, so one color per subject works well.

Plan toward the exam date

The biggest mistake is scanning the whole unit the night before. Spaced repetition needs a few days to work, because each word should come back several times at growing intervals.

• Scan the new unit as soon as you start it in class, not when the test is announced.
• Study a little every day instead of one long session.
• Learn in both directions for words you need to write, not just recognize.
• In the last days, focus on the words you keep getting wrong.

How Cardfox handles this

In Cardfox you scan a vocabulary page, pick a photo or open a PDF, check the detected pairs, deselect or swap sides, and save them as cards in a deck. You can set an exam date so the app makes sure everything sticks by then, and it schedules reviews with the FSRS spaced repetition algorithm.

The free version includes three scans to start and then one a week. Unlimited scanning is part of Cardfox Pro. If you don’t have the book at hand, you can also add words from any app via the share sheet with “Add to Cardfox”, or create cards yourself.

Summary

Good light, a flat page, a straight angle and a quick check before saving are what make scanned flashcards reliable. Organize by unit, start early, and let a spaced repetition schedule do the timing. If you want a tool that does the scanning and scheduling in one place, Cardfox is made for exactly this workflow.