I first covered View Source, an action extension to view source code in Safari, soon after the launch of iOS 8:

With iOS 8 extensions, apps like View Source can be possible thanks to direct integration with Safari and access to the DOM. Once enabled in the browser’s share sheet, View Source will bring up a full-screen panel with source code you can read and copy. A share button lets you copy all text to the clipboard, send as email, or choose one from eight themes that include dark backgrounds and lighter styles. All these themes support syntax highlighting – a better visualization than my old scripts that didn’t support highlighting at all.

View Source has been updated with numerous improvements since its first release, and most notably yesterday with the release of version 2.0. View Source now has two Solarized themes, line wrapping is optional, and you can search and highlight any string of text within the extension. Even better, the extension now has a full DOM browser so you can view and navigate to linked assets without leaving Safari. You can also write custom JavaScript and have it executed in the Safari webpage you’re viewing after you dismiss the extension.

If you’re a web developer and work with iOS, View Source has turned into a must-have. It’s $0.99 on the App Store.