I pushed eight free AI chatbots to their limits to find the best AI chatbots of 2026. To explore our top picks, check out ZDNET's chatbot-by-chatbot guide.

Abstract: A flicker-free single switch multi-string LED driver with high power factor and current balancing is proposed and analyzed. It combines a pre-stage boost PFC converter and multiple ...

Struggling to edit, sign, or convert PDFs without shelling out for pricey software? You’re not alone. Whether it’s updating a resume, signing a contract, or merging multiple files into one, managing ...

Have you ever found yourself staring at a PDF file, wishing you could just pull the data into Excel and get to work? Whether it’s a financial report, a client list, or a data-heavy table, PDFs can ...

No apps to download, just run a shortcut and get on with it. Image: D. Griffin Jones/Cult of Mac You can convert a PDF to JPG on your iPhone instantly and for free ...

Whether you shot the video or not, sometimes it's just in the wrong file format. When you need to convert a video to a different file format, what’s a quick, easy way to do it? Movavi’s free Online ...

After a long process of YouTube video downloading, it will be quite annoying to see a warning that the downloaded file format is not compatible with your Mac computer ...

An Excel to JSON converter software changes the .xls file (or other format supported by Microsoft Excel) extension to .JSON file extension. An XLS file is usually a spreadsheet created by Microsoft ...