>> IW4 file

IW4 file format description

Many people share .iw4 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .iw4 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .iw4 files.

1 filename extension(s) found in our database.

.iw4 - IW44 Encoded DjVu Image

The IW4 graphic files are related to DJVU Plugins. IW4 file is an IW44 Encoded DjVu Image (DjVuPhoto). It is a progressive, wavelet-based lossy compression format for continuous-tone images (i.e. photos and pictures).

DJVU Plugins
Graphic files
- / -
IW44 Encoded DjVu Image related extensions:
CALS Compressed Bitmap
Autodesk AutoShade Output
GD Library 2 Image
Better Portable Graphics Image
Aleph One Image
QPS QINSy Graphics Data

Naturally, other applications may also use the .iw4 file extension. Even harmful programs can create .iw4 files. Be especially cautious with .iw4 files coming from an unknown source!

Can't open a .iw4 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 .iw4 file extension is often given incorrectly!

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

id4, iq4, is4, iw, iwr, iwt, lw4

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.iwr Document
Infini-D Scene
SmartWare Input-Screen File
Chain Engineering Database
Sunnysoft InterWrite Skin
Lightwright 4 Data

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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