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CuperPDF is a PDF viewer based on pdf.js in a WebView. It doesn’t require any permissions.

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The app supports min SDK 23, which is incompatible with some of the popular Android devices currently in use such as Galaxy J2, J1 Ace, Grand Prime, and Oppo A37f....

Hi, Pinch to zoom works with these modifications. I kept the original zoom button. Thanks for telling me if I made a mistake.

I am using am SM-N910H smartphone. It is rather fast system to operate with even large books in pdf format. But this app opened and rendering every new page really...

As discussed with @Tommy-Geenexus in #7, this PR implements an onDocumentLoaded callback that enables document-related menu items such as printing. One thing I'm not 100% happy with is that the...

Offer zooming in and out with touch screen pinch and stretch actions.