Open CWK files in your browser
The document of ClarisWorks and AppleWorks, the Mac's all-in-one office app of the 1990s. Open one right here, whatever it holds. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your file opens as what it holds: pages of a document, a sheet, a drawing or slides.
- Documents • Every page, with its fonts and pictures
- Spreadsheets • Every cell, with Show formulas
- Search • Every match counted and marked
- Export • Save as PDF, PNG, JPEG or CSV
About CWK
Claris, Apple's software company, made ClarisWorks in 1991, and Apple renamed it AppleWorks with version 5 and sold it until 2007. It came on every iMac and many Macs at school, so a generation's school reports, newsletters and budgets are CWK files, from Windows versions too.
One CWK can be a word processing document, a spreadsheet, a drawing, a painting, a database or slides, with frames of the others inside it. Apple's Pages and Numbers opened AppleWorks files for some years and then stopped, and current Macs have nothing that opens them.
Filepeek reads the file with libmwaw, the open source reader LibreOffice uses for old Mac files, compiled to WebAssembly, and opens it as what it holds: pages of a document, a sheet in a grid, a drawing or slides. Search finds any word, and Export saves it as a PDF or as pictures, or a sheet as CSV.
ClarisWorks or AppleWorks document
.cwk • .cws
Format
- MIME type
- application/x-appleworks
- Made by
- Claris, then Apple
- Released
- 1991
Inside the file
- Holds
- Text, a sheet, a drawing or slides
- Also
- Frames of the others inside
- Written by
- ClarisWorks 1 to AppleWorks 6
- Plus
- MacWrite, MacDraw and more old Mac files
Opens in every browser
Filepeek opens CWK files in Chrome, Edge, Firefox and Safari. Current Macs don't open them, and browsers only download them.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open CWK
- WindowsLibreOffice opens it
- MacLibreOffice opens it • Current Pages and Numbers don't
- iPhone and iPadNo app built in opens it
- AndroidNo app built in opens it
Questions
Why won't my Mac open my AppleWorks file?
Pages and Numbers stopped reading AppleWorks files years ago, and AppleWorks itself no longer runs on a current Mac. Drop the file here instead and it opens as what it holds.
Does it open other old Mac files?
Yes. libmwaw reads many: MacWrite, Word and Works for the Mac, MacDraw, FreeHand 1 and 2 and dozens more, when the file carries its name or its own mark.
Can I save it as something newer?
Export saves a document or drawing as a PDF or pictures and a spreadsheet as CSV. For a file to edit, LibreOffice opens CWK files and saves them in its own and Microsoft formats.