Update! I've improved this tool and you can see the new version here: Canvas App SVG Converter

Paste your SVG code below and the Power Apps friendly code will be stored in your clipboard, ready for you to put into your Power Apps Image control.

If you're looking for some nice icons, you could try Iconify.

Step by step guide to using SVGs in Power Apps

Find your SVG image and copy the source code
Paste the SVG source code in the box above (on this page)
In your canvas app, insert an Image control
Paste the code this site automatically copied into the Image control's Power Fx formula bar