>> ANN file

ANN file format description

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

3 filename extension(s) found in our database.

.ann - Windows Help Annotations

The ANN data files are related to WinHelp. ANN file is a Microsoft Windows Help Annotations. Windows Help is a component of Windows that is accessible from various Windows programs. The WinHelp seems to be no longer supported.

Data files
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Windows Help Annotations related extensions:
Help Combined Full-text Search
Windows Help File

.ann - ENVI Annotation Data

The ANN data files are related to ENVI. ANN file is an ENVI Annotation Data. ENVI image analysis software is used by GIS professionals, remote sensing scientists, and image analysts to extract meaningful information from imagery to make better decisions.

Data files
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ENVI Annotation Data related extensions:
ADS40 Orientation Adjustment Data
ADS40 Header Data
ENVI Bad Lines List
ADS40 Camera Calibration Data
ENVI Calibration Factors Data
ENVI PPI Count Data

.ann - Zemax Annotations Data

The ANN data files are related to Zemax. ANN file is a Zemax Annotations Data. Zemax is an optical design program that is used to design and analyze imaging systems such as camera lenses, as well as illumination systems.

Data files
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Zemax Annotations Data related extensions:
Zemax ASCII Glass Catalog
Zemax Binary Glass Catalog
Zemax Binary Image Surface Data
Zemax Scattering Distribution Data
Zemax Configuration Data
Zemax Element Drawing Settings

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

Can't open a .ann 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 .ann file extension is often given incorrectly!

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

abn, agn, ahn, amn, an, anb, ang, anh, anm, nan, nn, znn

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

i2 Analyst's Notebook Data
Our Family Tree Data
Markush AMN File
NanoScope Software Data
Jazz Jackrabbit 2 Animation Data
CYANA Torsion Angle File

Operating systems currently supports the following operating systems:

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

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