Dark Mode has its drawbacks. For example, the worksheet grid usually remains white. You can choose Black under Office Theme, which activates a Dark Mode toggle in the View tab of your Excel ribbon.

Xleak is a simple terminal tool that lets you open and inspect Excel files instantly, without ever leaving your command line.

Excel's Total Row uses smart SUBTOTAL logic to ignore hidden data, adapt to filters, flag text errors, and measure performance volatility.

Think you know iOS inside out? Well, think again. Unlock your iPhone's full potential with these hidden tweaks.

With more than a decade of experience, Nelson covers Apple and Google and writes about iPhone and Android features, privacy and security settings, and more. Matt Elliott is a senior editor at CNET ...