About ToolSmart
Smart, fast, and entirely client-side developer tools — drawn by hand.
What is ToolSmart?
ToolSmart.dev is a purely static website built to give developers smart, lightweight tools for everyday tasks. Every calculation and conversion runs entirely in your browser — there is no backend server, no database, and no data collection. What you paste stays on your device.
Two Core Tools
Smart Timestamp Converter
Paste any JSON, log, or text and ToolSmart automatically recognizes every timestamp — in seconds, milliseconds, or microseconds — and converts them all to readable dates. One click to replace them in your original text.
Try it now →JSON to TypeScript
Paste any JSON and get clean TypeScript type definitions in return. ToolSmart intelligently detects optional fields across array elements — a detail most other converters miss — and also supports Go, Python, Java, and Rust.
Try it now →Developer
ToolSmart.dev is an independent side project, built and maintained by a single developer who got tired of searching for the same small tools over and over.
Developed by @jiangshangfan1 →Tech Stack
- Pure frontend (HTML + CSS + JavaScript)
- Runs entirely client-side — zero server cost
- Hosted on Netlify + Cloudflare CDN
- UI design: warm hand-drawn line art style