Why I Built It

I write a lot of documentation. Technical specs, README files, meeting notes — it's all markdown. I tried dozens of editors. Some were too basic. Some were packed with features I never used. Almost all of them wanted my email address or sent data to some server.

I wanted something that opened instantly, worked offline, and didn't track a single thing I wrote. Something that rendered Mermaid diagrams and LaTeX math without needing to configure anything. Something I could install on my phone and use on a plane.

So I made it. It runs entirely in your browser. Your text never touches a server. There are no analytics, no cookies, no data collection.

What It Uses

Under the hood it's vanilla JavaScript with a few libraries doing the heavy lifting:

• marked — converts markdown to HTML, fast and reliable
• Mermaid — renders diagrams and flowcharts
• MathJax — handles LaTeX math rendering
• highlight.js — syntax highlighting for code blocks

Everything runs client-side. No backend, no APIs, no servers.

Privacy First

There is zero tracking. I don't use Google Analytics, no Facebook pixels, no session recording tools. Plausible, Fathom, none of that. Everything you write stays in your browser's localStorage. When you clear your browser data, your documents are gone.

I believe tools should respect your privacy by default, not as an afterthought.

Open Source

The entire project is open source on GitHub. You can inspect the code, fork it, or contribute. It's a simple project with no build step — just HTML, CSS, and JavaScript.

About the Creator

I'm Eduard Tymchenko, a software developer and SEO specialist. I build tools that solve real problems and respect users' privacy. You can find me on GitHub or X/Twitter.