File formats accepted by WePay
Currently WePay accepts JPG, JPEG, TIF, TIFF, PNG, and PDF files.
The link here provides more information on the documentation needed based on chargeback type. Please keep in mind that there are size limitations on files, so you may want to submit screenshots if necessary. For instance, if you would like to submit your refund policy but the file size is too large, you can take a screenshot of the page with the cardholder’s signature.