>There is always a degree of trust you put in any company's software you use, and it's up to the company to be good stewards of that trust. If they break it, it's always bad for business anyways. But there is a point that if it was open source, those who have the desire to do so can continue using it without any concerns, which is fair.

I generally agree, but in this case you don't even have any meaningful identification on the site to say who created the software. I'm not sure how one can trust the creator of software if they won't even tell you who or what they are. Not even a pseudonym. There is no way to say that the person posting as philjohnson here is in fact the creator, or if the claimed copyright owner "Breeze PDF" is a legal entity that can own copyright.

As it is, with no source or identifying information, my default assumption if I happened upon this page would be that is is another one of the thousands of sites running FOSS software as a service with no added value or contribution back, but possibly also scanning every PDF it sees for bank/personal/tax/crypto information at which point it would decide to send that off to a server.