The Grammarly to Markdown Chrome extension allows writers to easily convert and export their Grammarly documents to Markdown format. By simply opening a document in Grammarly, clicking on the extension button, and copying the converted text from the clipboard, writers can ensure their content is error-free and ready to be used in their favorite Markdown editor. This convenient tool helps streamline the writing process and caters to the needs of developers who prefer Markdown as their go-to format. For any questions or suggestions, users can visit the project's GitHub page.