Inline SVG, no height/width attributes:

<img src="data:image/svg+xml,…">
…drawn to <canvas>… Eat at Island Joe's
…in <img> as PNG data URL.

Inline SVG, with height/width attributes:

<img src="data:image/svg+xml,…">
…drawn to <canvas>… Eat at Island Joe's
…in <img> as PNG data URL.

Referenced SVG (same domain), no height/width attributes on SVG:

<img src="smiley.svg">
…drawn to <canvas>… Eat at Island Joe's
…in <img> as PNG data URL.

Referenced SVG (same domain), with height/width attributes on SVG:

<img src="smiley-height-width.svg">
…drawn to <canvas>… Eat at Island Joe's
…in <img> as PNG data URL.