The best way (aside from not clicking on shady email attachments) is to open a known, benign SVG file on the computer, and instruct Windows to always open it in Notepad, or a similar non-browser ...

Add or Remove Programs entry for Adobe SVG Viewer 3.0. This program allows you to view Scalable Vector Graphics. Uninstall Command C:\Program Files\Common Files\Adobe\SVG Viewer 3.0\Uninstall ...

Through its Command Line Interface, you can perform many tasks, one of which is Bulk Conversion of SVG to PNG. If you want to convert a single SVG file to PNG, just launch its graphical interface ...