Take the WPS219 version as an example:

We recommend that you consider using WPS 219 to add a header or footer to a pdf. The operation steps are as follows:

1. Open the PDF Document;

2. click "insert-page number"/"insert-header and footer" (indicating that this function needs to be used by WPS members);

3. You can set the parameters of the page or header and footer to insert according to your requirements.