Free Online Tools, No Sign-Up
Two complete open-source tool suites plus our own small, fast utilities for developers, network admins, writers and everyone else. Every tool runs entirely in your browser — your data never leaves your device.
Full Tool Suites
Complete, ready-made collections — hundreds of tools, one click away.
IT-Tools — 100+ Developer Tools
A full suite of handy utilities: token & UUID generators, Base64 / hash / encryption helpers, JSON / YAML / XML converters, network calculators, text tools and much more.
Open source · GPL-3.0 · by Corentin Thomasset
CyberChef — 300+ Data Operations
The Cyber Swiss Army Knife from GCHQ: encoding, encryption, compression, hashing, parsing and data analysis. Chain operations into recipes and process data entirely in your browser.
Open source · Apache-2.0 · by GCHQ
Featured Tools
Lightweight single-purpose tools, built by HandyTools.
IP Subnet Calculator
Enter an IP address and CIDR prefix to get the network address, broadcast address, usable host range and host count instantly.
Unix Timestamp Converter
Convert Unix timestamps (seconds or milliseconds) to human-readable dates and back, with UTC and local time shown side by side.
JSON Formatter & Validator
Pretty-print, minify and validate JSON. Syntax errors are pinpointed by line and column so you can fix them fast.
Unit Converter
Convert length, weight, temperature and area units — meters to miles, kilograms to pounds, Celsius to Fahrenheit and more.
QR Code Generator
Turn any text or URL into a QR code in one click, then download it as a PNG image for printing or sharing.
Word & Character Counter
Count characters, words, sentences, lines and paragraphs as you type, with an estimated reading time for your text.
All tools are free to use, work offline once loaded, and process everything locally in your browser.
Credits & Licenses
- IT-Tools (the suite at suite.auauc.ccwu.cc) — © Corentin Thomasset and contributors, licensed under the GPL-3.0. Source code: github.com/CorentinTh/it-tools
- CyberChef (under /cyberchef/) — © Crown Copyright (GCHQ), licensed under the Apache License 2.0. Source code: github.com/gchq/CyberChef
- The six featured tools on this page were built by HandyTools.
The third-party suites above are served unmodified from their official open-source releases; their full license texts are included in their respective folders.