Sketch designer and evangelist Peter Nowell has released a free web-app with new optimizations for your SVG files—especially those exported from Sketch. Read his Medium post and then try it out for yourself.
“SVGito is a small tool. It helps designers and developers by automating a few improvements to SVGs that you would normally have to do by manually editing the code. These improvements typically reduce an SVG’s complexity and file size, while retaining the same visual appearance…”