Apple's Shortcuts app lets me merge two or more iPhone photos into one shot with just a few taps, no third-party ...

Different formats can also make managing several documents cumbersome. Combining these documents into a single PDF file may be helpful for personal or professional use, to deliver simplified, ...

PDF Split and Merge with Bookmark Import lets your merge multiple PDF files in single PDF file. You can use interface or command line for multiple PDF files.

You don’t need complicated software to merge or split audio files—do it all online with ease.

The often overlooked Xcode FileMerge app lets you spot what's changed between two files. Here's how to spot the differences using the tool.