Document labeling method and device and storage medium

The invention relates to the technical field of document processing, and discloses a method for document tagging, which comprises the following steps: displaying a document page in a document preview interface, and displaying document contents on the document page; in response to a note mode instruction, a canvas used for labeling is displayed in the document preview interface, and a layer used for displaying the document page is different from a layer used for displaying the canvas; and in response to an annotation instruction for the document content, displaying an annotation for the document content in the canvas. Thus, since the layer of the document page and the layer of the canvas are different layers, the user can label the document content on the canvas without being limited by the size of the document page, the space range of the user for labeling the document content is expanded, and the user can label the document content in a large amount. The invention further discloses a device for document labe