About useTool

useTool is a collection of fast, free, browser-based tools built for developers, designers, writers, and anyone who works with data. Every tool runs entirely in your browser — your input is never sent to a server, stored, or logged.

Why useTool?

Most online tools make you sign up, show you ads mid-task, or send your data to their servers. We built useTool as the opposite: no accounts, no distractions, no data leaving your device. Open a tool, use it, close the tab. That's it.

How it works

Every tool is written in vanilla JavaScript and runs entirely client-side. When you paste JSON to format it, or text to count its words, the computation happens on your machine using your browser's JavaScript engine. Nothing is transmitted over the network.

What's coming

We're starting with a focused set of high-quality tools and expanding steadily across nine categories: Developer Tools, Text & Writing, Color Tools, Converters, Image Tools, SEO Tools, Calculators, Social Media, and Security. More tools are added regularly.