Opera Software has embedded into its Web browser a beta set of tools, collectively called Dragonfly, that can help developers find errors in their complex Web pages, the company announced Monday.

If a web app doesn’t use the browser, how can you test it? Microsoft’s Edge Dev Tools brings the familiar F12 tools to the desktop Press F12 in most web browsers and you’ll see a set of debugging ...

Website designers and those of you interested in viewing and debugging web pages in 3D may be interested in a tool updated by Microsoft in the form of the aptly named 3D View tool. Microsoft Edge ...