New Tools
Fresh additions to the Stuff Kit family
Speed Master
Pressure Converter
ThermoConvert
Universal Mass Converter
Ultimate Length Converter
Universal Time Converter
Fuel Economy Converter
Password Generator
Code Minifier
JSON Formatter
QR Code Generator
Base64 Converter
Color Picker & Palette
HTML Entity Encoder
SQL Formatter
Tool Categories
Pick a category to find exactly what you need
PDF Tools
Merge, split, compress, convert and edit PDF files
Image Tools
Resize, compress, convert and edit images online
Converters
Unit, currency, and file-format converters
Calculators
Smart calculators for everyday use
Text Tools
Word count, case convert, and text utilities
SEO & Web
Meta tags, keyword tools, and web utilities
Developer Tools
Code minifiers, formatters, and developer utilities
Built Different
100% Private
All processing happens in your browser. No files are ever uploaded to our servers.
Blazing Fast
Native browser APIs and WebAssembly power make every tool instant and responsive.
Always Free
Every tool is completely free to use — no sign-up, no limits, no hidden costs.
Works Everywhere
Fully responsive and optimized for desktop, tablet, and mobile devices.
Beautiful UI
Thoughtfully designed interfaces that are easy to use and enjoyable to interact with.
Growing Toolkit
New tools are added regularly based on real user needs and feedback.
Start Using Stuff Kit Today
No sign-up. No credit card. Just tools that work.