How to open .UVI files on iOS
To open .UVI files on iOS, in the Files app, tap the .UVI file to try a preview; if there’s no preview/it fails, transfer the file to a desktop OS to open it with a compatible image tool.
Step-by-step instructions
- In the Files app, tap the .UVI file to try a preview; if there’s no preview/it fails, transfer the file to a desktop OS to open it with a compatible image tool.
Common issues
“Unsupported format” or the image won’t preview
Your OS may recognize .UVI as image/vnd.dece.graphic but your viewer does not include a decoder for this specific image format/variant.
- Try “Open with” and test a different image/graphics application on a desktop OS.
- If you received the file from someone, ask the sender what application/workflow produced it and whether they can export to a more widely supported image format.
File opens as a generic/binary file or the wrong app launches
The file association may be missing or incorrect even if the extension-to-MIME mapping exists in some databases or server configurations.
- Manually choose an application via “Open with” rather than double-clicking.
- On Linux, ensure your environment’s MIME database is up to date so .uvi maps to image/vnd.dece.graphic.
Web server serves the file with the wrong Content-Type
If the server does not map .uvi to image/vnd.dece.graphic, browsers and clients may mis-handle downloads or rendering.
- Configure your server to send Content-Type: image/vnd.dece.graphic for .uvi (and related extensions if needed).
- If using Apache, confirm your mime.types / mod_mime configuration includes the mapping for uvi → image/vnd.dece.graphic.
Security note
.UVI is an image media type (image/vnd.dece.graphic), but image decoders can still have vulnerabilities; only open files from sources you trust, especially if the viewer is older.