Hey HN! I'm a macOS developer, and I built a new tool called Mutate to solve a constant friction point in my workflow.

As developers, we are constantly decoding Base64, formatting minified JSON, escaping URLs, or converting casing. I was tired of pasting potentially sensitive logs and data into random web tools to get this done. Mutate is a native macOS application that handles all these text transformations locally and instantly. Built entirely in Swift, it's designed to be fast, lightweight, and completely private.

I'd love for you to try it out and let me know what you think, or if there are any specific transformations you'd like to see added!