| File Extension: | ATTR |
| File Type Description: | iPhoto Attributes File |
| File Type Developer: | Apple |
| Primary Associated Software: | Apple iPhoto |
| Primary Software Developer: | Apple |
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Primarily, a ATTR file extension is a type of iPhoto Attributes File file developed for the Apple iPhoto software program by Apple. Annoymous user data statistics infer that ATTR files are most popular in United States and with those using Windows 10 devices. A high percentage of these users browse the web using Google Chrome.
 | Apple iPhoto by Apple |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| Adobe Systems Incorporated | Page Layout Files | Portable Document Format File | |
| .FONT | LucasArts Entertainment Company, LLC | Font Files | Font Data |
| .PICT | Apple | Page Layout Files | Macintosh PICT Format |
| .MP21 | AXMEDIS Products and Services | Video Files | AXMEDIS MPEG-21 Object |
| .BUNDLE | Apple | Plugin Files | Mac OS X Application Bundle |
| .1992 | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .QTR | Apple | Plugin Files | QuickTime Extension Resource |
| .T2 | RM Education | Data Files | Textease 2000 File |
| .SPX | Xiph.Org | Audio Files | Ogg Vorbis Speex File |
| .XIP | Apple | Compressed Files | MacOS Signed Archive |
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