Hey, I'm Jimmy, Developer of Textcompare.io
I'm Jimmy, an indie developer who loves building fast, no-BS web tools. I built TextCompare.io because I kept running into the same frustrating problem: trying to spot differences in massive code files or logs, and every other diff tool would either freeze my browser or take forever to load.
On top of that, I really didn't like the idea of pasting my private code or API responses into some random website where it gets sent off and probably saved on a server I know nothing about. So I just built my own thing that runs completely on your device. Nothing leaves your browser, ever.
This isn't my only project either. I build other tools under my indie hacker network, like pixelateimage.io and numberstoletters.com. Same philosophy every time: fast, private, and everything stays on your machine. No servers, no funny business.
How it actually works
I went pretty deep into how diffing engines work before building this. Here's what's actually running under the hood:
- The Input Engine: Uses Microsoft's Monaco Editor, same thing that powers VS Code. Makes typing and pasting feel smooth instead of like you're fighting the browser.
- The Diff Engine: Custom-built using the Myers Algorithm, runs 100% in your browser's memory. There's 2 comparison styles you can switch between depending on how you like to read diffs. Since nothing hits a server, it tears through 10MB+ files almost instantly.