In my experience with PDFs, no other PDF program can really open all the weird PDFs, except for Acrobat Reader. Especially with regards to PDF Forms.
The funny thing is, only Acrobat Reader on PC and Mac is like that. If you open some of the weird PDFs on their phone Acrobat Reader or web Acrobat Reader, they are about as broken as they are in Pdfium (Chrome’s open source PDF reader, based on licensed FoxIt) or Preview, let alone pdf.js.
Not even Adobe can really port their format readers on phone and javascript.
The funny thing is, only Acrobat Reader on PC and Mac is like that. If you open some of the weird PDFs on their phone Acrobat Reader or web Acrobat Reader, they are about as broken as they are in Pdfium (Chrome’s open source PDF reader, based on licensed FoxIt) or Preview, let alone pdf.js.
Not even Adobe can really port their format readers on phone and javascript.
(But that’s my experience with Word/Excel too)