Paste the code to your Sellfy website’s HTML field.
Next, go to your Sellfy store editor and find the HTML field. It is most likely in the form of an HTML/Code widget or module which you can find on the Sellfy’s editor. Add it to your page, and paste the PDF Viewer Embed Code you’ve copied before to the HTML field.
Save and update, and that’s it, you should have Common Ninja’s PDF Viewer widget on your Sellfy store.