If you copy and paste your formatted text into Grammarly’s editor, Grammarly will convert it to plain text. To preserve the formatting of your text while using the Grammarly Editor, please use the Upload (Import) and Download (Export) buttons to check documents that have been written in other text editors like MS Word, TextEdit, or OpenOffice.
Once you're finished editing your text, click the Download or Export button to transfer the edited text back to its source document, preserving the original text formatting.
Supported file types are MS Word (.doc, .docx), OpenOffice (.odt), .txt, and .rtf
If you work on a Windows computer, you can also download Grammarly for Microsoft and use Grammarly without leaving your Word document or Outlook email.