I have been looking at http://www.pdfcrowd.com to do HTML to PDF conversion, for a few reasons.
GDPR compliant, Ability to delete, watermark etc etc etc.
Users of my app will effectively be creating a report, with photos in it. I have an HTML created when the report is done, and would like an option for a watermarked PDF to be created, and then emailed to the user.
If an extesion developer would like to look at the pdfcrowd and see how easy it would be, I would be happy to discuss a sponsorship to get it started.
I will not cross post this to Thunkable, so if you have mates on Thunkable who can help, please let them know. I have the same name there.