From Adobe Acrobat to free online editors and built-in tools, here’s how to merge multiple PDFs into one document.

Tap the Share icon (the square with the arrow). Scroll down and choose Print. On the preview screen, use two fingers to pinch outward. This instantly converts the preview into a PDF. Tap the Share ...

While many people think of Acrobat only as a PDF viewer or editor, its design capabilities make it possible to start with a blank page and build a fully customised document from s ...