Opening CWK Files

The CWK file type is primarily associated with AppleWorks.

CWK	File extension: CWK
	File type:	ClarisWorks document

What is a CWK file

CWK files mostly belong to AppleWorks by Apple. CWK file format is a document file format associated with ClarisWorks and Apple's AppleWorks suite.

Use: CWK stands for the ClarisWorks file. CWK files can save information belonging to three different file types. These are word processing documents, spreadsheets, and presentation formats. The data present in the files can include text, charts, tables, images, diagrams, and other page layout elements.
Adoption: CWK files can be opened using ClarisWorks and Apple's Appleworks. These software can open CWK files in both Windows and macOS systems. CWK files have been later replaced by three different formats; PAGES, KEY, and NUMBERS files that can be opened using iWork application suite. CWK files word processing files created using AppleWorks 6 can also be opened using Apple's Pages software (version 1 through 4). AppleWorks 6's presentation CWK files can also be accessed using Keynote software (Keynote 5 and earlier versions). CWK spreadsheets file created using AppleWorks 6 can also be opened using Numbers (version 1 and 2). LibreOffice software is an open source application that can open CWK files on Windows, macOS and Linux machines.

How do you open CWK files?

You need a suitable software like AppleWorks to open a CWK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CWK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CWK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CWK File Viewer

Choose your .cwk file to view

or drag and drop it here

Online File Viewer

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How to convert a CWK file to PDF, HTML, DOCX, JPG, ...

You can convert CWK files using our online CWK file viewer (powered by Convert.Guru):

To do this, click the button "Choose your .cwk file to view" on this page.
Your CWK file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Select the office format (e.g. PDF, DOCX, XLSX, PPTX, ODF, HTML, JPG, ...) you want.
Your file will be converted and downloaded.

Programs that open and convert CWK files:

AppleWorks by Apple
See the previous paragraphs to learn more about the main application. CWK files are often referred to as AppleWorks page layouts because this type of file is primarily created or used by this software.
CattleMax (CattleMax data file) by Cattlesoft
CattleMax is a cattle farm management solution that allows farmers to manage production, performance, health and finances. The CWK file format stores data for CattleMax. This file format is classified as Data. Related links: CattleMax Introduction Video from American Rancher, CattleMax Review, Article Mentioning CattleMax
GC-Prevue (GC-Prevue work file) by Graphicode
GC-Prevue is a software for viewing Gerber files. Gerber files are open ASCII vector format files that contain information on each physical board layer of printed circuit board (PCB) designs. The CWK file format stores a GC-Prevue work file. This file format is classified as CAD. Related links: GC-Prevue Tutorial, GC-Prevue Tutorial Video

CWK file format:

The file format determines how the data is stored in the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. If there are problems opening a file, you must first determine the file format used. Below you will find our evaluation of the CWK files:

The CWK file type is a very commonly used file extension and predominantly uses a uniform format. The following file formats are most commonly found in CWK files:

70% of all CWK files have the same signature 06 07. The contents of these files cannot be read by a human; only a computer program can interpret the data. CWK files can be up to 27 MB in size, but are often around 19 KB - 130 KB. This file type was primarily in use more than 10 years ago. The files contain the following words: BOBO. Such files sometimes refer to auto, invoice, anhang, claremont, meeting, annual, organ and quadt.
3% of all CWK files start with the magic bytes 05 02 99 00, which are always the first bytes of this file format. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The files are often between 11 KB and 41 KB in size. The keywords BOBO are typical for these files.

The remaining 27% of all CWK files are files with no common format, such as BOBO. Tagged as appendix, ausgaben, elektro, letter, admin or ficha. Just click the "Choose your .cwk file to view" button on this page to find out what your CWK file is.

Technical Data for CWK File Extension

File classification:

Page Layout

Related files:

certificados, swk, cws, cmk, lwk, doc, docx, exec, pdf, 1, zip, kmz

Mime type:

application/x-appleworks

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: GC-Prevue.workfile
EXEFile: %ProgramFiles%\Gerber_Viewer\GCPrevue\gcprevue.exe%1

ProgramID: AppleWorks.Document.6
EXEFile: %ProgramFiles%\Apple Computer\AppleWorks 6\AppleWorks.exe %1

ProgramID: GC-Prevue.workfile
EXEFile: %ProgramFiles%\GraphiCode\GC-Prevue 14.1.2\gcprevue.exe

ProgramID: GC-Prevue.workfile
EXEFile: %ProgramFiles%\GraphiCode\GC-Prevue 11.1.2\gcprevue.exe

Show all 4 listings To Top

a cwk ClarisWorks document is a special file format by Apple and should only be edited and saved with the appropriate software.

How to solve problems with CWK files

Associate the CWK file extension with the correct application.
Update your software that should actually open clarisworks documents. Because only the current version supports the latest CWK file format. Search, therefore, e.g. on the Apple manufacturer website after an available AppleWorks update.
To make sure that your CWK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CWK file online - secure, fast, and no downloads needed.