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Notation Interchange File Format
File type: Audio and sound file
Files with niff extension are used as standard digital format for the representation of standard musical notation.
Found 2 different file type records with the same niff filename suffix.
File type category:
Audio and sound file
Date updated: August 3, 2017
The niff file extension is related to Notation Interchange File Forma. NIFF was completed in the fall of 1995. This is a standard digital format for the representation of standard musical notation. The format is very flexible, allowing for simple implementations with minimal graphical information, or much more elaborate descriptions including all aspects of page layout, associated midi data, custom symbols, etc.
MIME: vnd.music-niff
Use Personal Composer to import niff file format data.
Software apps that import niff files:
Microsoft Windows
Personal Composer
Software apps that export niff files:
Microsoft Windows
Personal Composer
Apple macOS / Mac OS X
File type category:
Bitmap image file
Date updated: June 23, 2025
Record marked as obsolete and not updated for a long time.
The niff file extension is also used for some older bitmap graphic interchange format called Navy Image File Format.
Most likely some old format without support. No further information could be found.
MIME types:
image/x-niff
application/x-niff
Some image viewers might still be able to view this old format.
Possibly can be exported to other formats.
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