CU1 file format description

Many people share .cu1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cu1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cu1 files.

1 filename extension(s) found in our database.

.cu1 - PhotoLine 4 Curve Data

The CU1 data files are related to PhotoLine. CU1 file is a PhotoLine 4 Curve Data. PhotoLine is a is a multi-featured image processor software.

Application:

PhotoLine

Category:

Data files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

PhotoLine 4 Curve Data related extensions:

.actions: PhotoLine 4 Defaults Data
.cu3: PhotoLine 4 Curve Data
.pattern: PhotoLine 4 Pattern Data
.pld: PhotoLine Image

Naturally, other applications may also use the .cu1 file extension. Even harmful programs can create .cu1 files. Be especially cautious with .cu1 files coming from an unknown source!

Can't open a .cu1 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:

example.cu1

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.

Open Control Panel > Control Panel Home > Default Programs > Set Associations.
Select a file type in the list and click Change Program.

The .cu1 file extension is often given incorrectly!

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

cu, ch1, du1, cul, ck1, cuw

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.cu: CUDA Source Code
.cu: my Knowledge Explorer Change Unit
.ck1: Commander Keen Data File
.cul: Windows Cursor Library
.cuw: Toyota Calibration Update Wizard Data
.c1: POV-Ray Include File

Operating systems

DataTypes.net 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

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

https://datatypes.net/open-cu1-files

If you have useful information about the .cu1 file format, then write to us!

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