About MonoTools

MonoTools is a growing collection of small, focused developer tools. Everything is computed inside your browser using JavaScript and the Web Crypto API — your input never touches a server.

Principles

• Privacy by default. Tool input stays in your browser. Preference cookies are optional and only written after explicit consent.
• Speed first. Static pages, no heavy frameworks loaded per tool, no spinners for things that should be instant.
• No fluff. Each tool does one job well.

Roadmap

New tools ship every week. Got a request? Send a note to yj_3000@163.com.