No próprio baixaki o desenvolvedor do app é a "Xetbox".
Não é criado pelo opera, alguém usou o Opera como base, empacotou com alguns extras e está distribuindo.
Posts made by wandoschneider
-
PortuguêsRE: Opera Hybrid 30?
-
Opera for WindowsRE: Open downloaded PDF outside the browser
AFAIK, it's for security purposes. The PDF is open in the browser's sandbox. Chrome does that too. The problem regarding some missing characters in the bundled PDF viewer is fixed in the developer channel, and will land on beta and stable soon.
To open the PDF outside Opera, you need to open the file explorer then open the PDF file.