View XML Documents with This Tool
This tool is a powerful extension wherein you can view the files immediately and it is completely free with many features. This can open any XML document and view it in a new tab without needing to install the entire browser. It can also save a copy of the document for future use or editing, and its functionality is not restricted to any particular file type. You can also save it directly to your Google Drive.
This is an extension for the Chrome browser, and you can install it using the Chrome Web Store.
