About ToolBox

ToolBox (toolboxhub.dev) is a free online toolbox with 65 small tools for developers and everyday work: encoding & hashing, JSON processing, code formatters, text tools, unit converters, date calculators, image tools and live code runners — with bilingual English/Chinese UI.

Our principles

• Local first: every tool runs inside your browser; the data you type never reaches a server.
• Clean, no noise: no pop-ups, no forced sign-up, no share walls.
• Fast and direct: open and use. Each tool does one thing and does it well.

How it works

This is a purely static website. All tool logic ships as JavaScript with the page and executes locally in your browser. There is no backend database and nothing you type is stored anywhere. You can verify this yourself: open DevTools (F12 → Network) and use any tool — no upload requests are ever made.

Why we built it

Every developer has those tiny tasks that aren't worth a script and don't justify installing software. Existing tool sites tend to bury you in ads — or quietly ship your data to their servers. We wanted a cleaner alternative. The site keeps growing; the blog documents how it's built and how to get the most out of the tools.