About this site
A lightweight collection of online tools built for speed, privacy and simplicity.
Wulaoer Tools
Our approach
Most tools here are single-purpose and do one thing well. All calculations run in your browser with JavaScript, so your input never leaves the device and works even on a slow connection.
Your data stays yours
There is no account system, no database and no server-side processing of your tool input. We do not want your files, your dates or your text — we just want to give you a quick answer.
Built to last
The site is a statically exported site served as plain HTML and CSS. Pages load fast, work without a backend and are easy to keep online.