PDF Files created using PDFium cannot be opened properly in Adobe Acrobat Reader DC... they simply open as Blank pages.... Totally Useless software given it is doesnt work with the most popular PDF reader on earth !!
PDFCrowd might be a bit more popular than PDFium. We know about 1 link to it since March 2021 and only 1 link to PDFium. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
For example this one has an example of doing that on their home page: https://pdfium.patagames.com/. Source: about 2 years ago
To follow on with this, I've used https://pdfcrowd.com/ too. Source: about 3 years ago
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