Hi Thierry,
You can do this, but it requires you to create a custom template – this is not possible from the settings.
Follow all instructions from the documentation.
Next, open the ‘html-document-wrapper.php’ file, and insert this:
<img src="https://yoursite.com/watermark.jpg" style="z-index:-999;position:fixed; top: 10cm; left: 5cm; width: 10cm;">
just before:
<?php echo $wpo_wcpdf->export->output_body; ?>
Adjust the left, top and width values to your preferences ??
If the image can’t be found, you can try server paths instead, check the documentation here:
Inserting images
Hope that helps!
Ewout
