I have been building a collection of SVG utilities for iLoveSVG , and one page that ended up being more interesting than it first sounded was the Base64 to SVG for Cricut tool. At first glance, “Base64 to SVG” sounds like a simple decode operation: Take an encoded string, decode it, and let the user download the result. In practice, it gets messier. People do not always paste the same kind of input. Some users have a full SVG data URL. Some have plain Base64. Some have raw SVG markup. Some have copied something from an embed, an AI output, an icon tool, a design export, or a website source. And Cricut users usually do not care about the encoding format itself. They just want a normal SVG file they can open, inspect, clean up, and upload into Cricut Design Space. So the page became less about “decoding Base64” and more about turning messy SVG-like input into something usable. The problem Base64 SVG strings show up in a lot of places.…