How to open .CDY files on iOS
To open .CDY files on iOS, open the .cdy file from files and tap share..
Step-by-step instructions
- Open the .CDY file from Files and tap Share.
- Send it to a compatible iOS app if Quick Look cannot preview it.
Recommended software
- Textastic
- Kodex
- Files app
Alternative methods
- Open .CDY in a browser-based viewer if desktop apps fail.
- Try opening .CDY on iOS with a secondary app to rule out app-specific issues.
- Convert .CDY only with trusted tools when direct opening is not possible.
Common issues
.CDY file does not open
This usually means the required app is missing or the .CDY file is incomplete.
- Install or update a compatible application.
- Verify the file came from a trusted source and was fully downloaded.
- Try opening the file in an alternative app on another platform.
Security note
Only open .CDY files from trusted senders.