Small tools that run in your browser
A handful of everyday utilities kept on one page — conversions, quick maths, text tidying and a few developer odds and ends. No accounts, no uploads, no waiting.
Everything is computed locally — nothing you type leaves this pageTools
Unit converter
Length, mass and temperature.
Percentage
Three of the calculations people look up most.
Text tidy
Change case, trim spaces, count as you type.
Unix timestamp
Seconds since 1970, both directions.
Colour formats
HEX to RGB and HSL.
Password generator
Uses your browser's cryptographic random source.
About
This is a personal side project — a single page holding the small utilities I kept searching for over and over. It is not a company and there is nothing to sign up for.
Every tool above runs entirely in your browser using plain JavaScript. Nothing you type is transmitted anywhere, nothing is stored, and the page loads no third-party scripts, fonts or analytics. You can read the whole thing with View Source.
The page is served from a small virtual server in Amsterdam over HTTPS. There is no contact form and no newsletter, because neither would be honest on a page like this.