About TmpIO

TmpIO is a free collection of online utility tools for developers, designers, students — anyone who needs to transform data quickly during the day.

Our philosophy is simple: tools should be fast, free and private. Every tool on TmpIO runs entirely in your browser with JavaScript. Your input never leaves your device — nothing is uploaded, stored or even seen by our servers, so you can safely process sensitive data.

The name comes from “temporary I/O”: like a temp file that does its job and gets out of the way, our tools help you finish a task in seconds, with zero commitment. No registration, no installs, no limits.

What we offer

A growing shelf of utilities: JSON formatting and validation, Base64 encoding, URL encoding, Unix timestamp conversion, QR code generation and cryptographic hashing. New tools land regularly, guided by what people actually ask for.

Support

TmpIO is free for everyone. If these tools save you time, the best thanks is a link from your blog or telling a colleague. Suggestions are always welcome on the contact page.