ATTR file format description

Many people share .attr files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .attr file can be edited, converted or printed with. On this page, we try to provide assistance for handling .attr files.

1 filename extension(s) found in our database.

.attr - Apple iPhoto Image Attributes

The ATTR data files are related to Apple iPhoto. The ATTR file is an Apple iPhoto Image Attributes. iPhoto is a digital photograph manipulation software application developed by Apple.

Apple iPhoto
Data files
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Apple iPhoto Image Attributes related extensions:
Mac OS X Spotlight Saved Search
ANSYS Electronics Desktop Data
AOL Advertising Control Data
Anritsu Vector Signal Generator Data
.afz Family Tree Database Backup
.aft Family Tree Database

Naturally, other applications may also use the .attr file extension. Even harmful programs can create .attr files. Be especially cautious with .attr files coming from an unknown source!

Can't open a .attr file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .attr file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

atr, att, ttr

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

AT&T Group 4 Bitmap Image
Alphacam Lathe Tool Data
SIO2PC Atari Disk Image
Lightscape Material File
ZipLip Secured E-mail Message
PhysioBank Annotation File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .attr file format, then write to us! >> ATTR file