Electronic invoice is a new version of invoice supervised by tax authorities, which is issued through the VAT electronic invoice service platform. Unlike traditional paper invoices, electronic invoices do not need to be stamped with a special invoice seal, but only need an electronic signature.

Electronic invoices are usually stored in OFD (Open Financial Document) format, but if they are not opened with a dedicated OFD reader, the electronic signature and seal may not be visible. In order to view the complete invoice information, you need to download and install the OFD reader to display the contents of the electronic invoice correctly.

In addition, some electronic invoices are stored in PDF (Portable Document Format) format, but if the "Notes and Form Documents and Stamping" option is not selected when printing, the printed invoices may not be stamped. In order to print invoices with stamps, you need to select this option in the print settings.

How to add electronic seal to ukey electronic invoice?

1. Using third-party software or platform to jointly issue electronic invoices in PDF format with print operation may require extra payment, and the operation is relatively cumbersome. At the same time, the seal stamped in this way has no legal effect, just to meet the aesthetic needs of users or financial departments.

2. In contrast, it is a more convenient way to convert OFD electronic invoices into PDF files with seals by using the Golden Tax OFD reader. Users only need to download and install the golden tax OFD reader, and complete the conversion according to the following steps:

(1) Open the Golden Tax OFD reader and click "PD" on the toolbar; (2) Click "Convert the selected ofd file to PDF"; (3) Select the OFD electronic invoice file that needs to be stamped with electronic seal, and click "Open"; (4) Click "Convert to PDF"; (5) Select the export directory and click "OK"; (6) After the export is successful, click "OK" to obtain the PDF file with electronic seal in the export directory.