Webfonter allows designers to "try before they buy," by previewing actual typefaces in any existing site. The tool can be used as a Chrome extension, browser bookmarklet or by entering a URL directly. Users can replace headline or body (paragraph) text, specific fonts, or, using custom CSS selectors.
WebFonter can be used during the design and development process - a critical time for font choice. The target website does not need to be publicly accessible in order to test-drive webfonts.