Word 6 for Mac Add-in file
File type: Plugin, addon file
A WDLL file is an add-in file used by Word 6 for Mac, the Macintosh version of Microsoft Word.
It is a plugin component for extending Word rather than a document containing user text.
File type category:
Plugin, addon file
Date updated: September 27, 2026
Microsoft Word 6 for Mac used the WDLL file extension for add-ins. These files contain the components that provide additional functionality to the Word application.
WDLL files belong to the software's add-in system and are separate from Word document files. Their exact purpose depends on the add-in that supplied the file.
Word 6 for Mac is legacy Macintosh software. Current versions of Microsoft Word for Mac and current Apple macOS versions do not generally load this historical add-in format, so WDLL files are no longer in common use.
A WDLL file is not normally opened as a standalone document. It was intended to be installed or loaded as an add-in by Word 6 for Mac.
Use the original Word 6 for Mac in a compatible classic Macintosh environment if the add-in must be used. Current versions of Microsoft Word for Mac and macOS generally cannot load it.
There is no normal document conversion for a WDLL file because it is an add-in component, not a Word document. It cannot be directly converted into a modern Word add-in; retaining its functionality would require a compatible replacement or redevelopment of the add-in.
Software apps that import wdll files:
Apple macOS / Mac OS X
Software applications that handle other tasks involving wdll files:
Apple macOS / Mac OS X
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