Click the "Select File" button above, and choose your CARDS file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert CARDS to another file type
To convert CARDS Flashcards to another format, you need Mnemosyne or other Database software.
Convert a file to CARDS
To convert other file formats to the "Study Deck Container" file type, you need software like Mnemosyne or a similar tool.
About CARDS files
A .cards file is primarily associated with digital flashcard applications used for spaced repetition learning. The most common origin (approx. 55%) is the Mnemosyne Project, an open-source tool that packages spaced repetition data (questions, answers, learning history) inside a ZIP-compressed container. Another variation (approx. 26%) comes from iFlash, a legacy macOS application. Users typically encounter these files when trying to share study decks or migrate data between platforms. The core challenge with .cards files is their fragmentation; a file created in Mnemosyne is structurally different from one created in iFlash or the iOS-based Cards Study app. This proprietary lock-in often prevents users from opening their study materials on modern devices or importing them into popular alternatives like Anki. To make the data accessible, the file must usually be converted into a standardized interchange format like CSV (Comma Separated Values) or a directly importable APKG (Anki Package). For archiving or printing physical flashcards, converting to PDF is the optimal workflow.
Convert.Guru analyzes your CARDS file, detects the exact format, and lets you read the text inside.
If you want to convert CARDS file to BOOK, you can use Mnemosyne or similar software from the "Spaced Repetition Flashcard Deck" category. In the File menu, look for Save As… or Export….
To convert files to CARDS, try Mnemosyne or another comparable tool in the "Spaced Repetition Flashcard Deck" category.
The CARDS Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CARDS converter.