Apple iWeb theme file
File type: Settings, options, themes or skins file
A .webtheme file is a theme resource used by Apple iWeb, Apple's website authoring software for Mac computers.
It contains the visual design information and resources that iWeb uses when creating web pages.
File type category:
Settings, options, themes or skins file
Date updated: September 24, 2026
The WEBTHEME file format belongs to Apple iWeb, a website creation application for Mac OS X and macOS. A webtheme file stores a collection of design elements and layout settings for an iWeb website theme.
iWeb uses these files as part of its theme resources. They are not normally standalone documents; the application loads them when a user selects a theme for a site or page.
iWeb and its themes were designed for Mac OS X and macOS. Apple discontinued iWeb, so the format is mainly encountered in older iWeb installations and website projects.
Open a .webtheme file with Apple iWeb on a Mac that has iWeb installed. In normal use, iWeb loads webtheme files from its theme resources rather than opening them as ordinary documents.
If the file was supplied separately, place it in the appropriate iWeb theme resources location and then restart iWeb if necessary. The exact location can vary between iWeb installations.
A webtheme file is not normally converted directly to another file format. It is a theme resource for iWeb, not a finished web page or image.
To produce usable website files, open the related site in iWeb, apply the theme if needed, and use iWeb's publishing or export options. This creates the site's web output rather than converting the webtheme file itself.
Software apps that manage or store settings in webtheme files:
Apple macOS / Mac OS X
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