As usual, there's a small caveat when using compressed SVGs in Internet Explorer. Let's say you want to embed the SVG as a CSS background image:

.something { background-image: url('/some-path/chimp.svg'); background-size: 3em; }

<svg xmlns="http://www.w3.org/2000/svg" width="1" height="1" viewBox="0 0 24 24">

Despite the background-size inclusion, IE9-11 will render the SVG as a tiny speck. This is because for some SVGS, SVGO strips out the width and height attributes -- and Internet Explorer 9, 10, and 11 need these attributes to be present (even with arbitrary values) for them to render. To fix this, after you've compressed your SVG, open it in a text editor and add the "width" and "height" attributes to the SVG tag: