WPD is a word processing file format used by WordPerfect, a popular word processor in the 1990s. WPD files contain text, images, and document formatting, and can still be opened with modern word processors like Microsoft Word. WordPerfect was widely used in legal and government sectors.
DOC is a word processing file format used by Microsoft Word. It supports rich text formatting, embedded images, and document layouts, making it ideal for creating professional documents. DOC files are compatible with most word processors and are one of the most common formats for text-based content.