Welcome to DevToolset
A curated collection of essential tools for developers.
Calculator
A simple calculator for basic arithmetic.
Unit Converter
Convert between different units of measurement.
Text Utilities
Perform various text manipulations.
Base64 Encode/Decode
Encode and decode Base64 strings.
URL Encoder/Decoder
Encode and decode URLs.
JSON Formatter/Validator
Format and validate JSON.
Password Generator
Generate secure passwords.
UUID Generator
Generate v4 UUIDs.
Hash Generator
Generate SHA-256 hashes.
Image Resizer & Compressor
Resize and compress images.
Color Picker + Contrast Checker
Pick colors and check contrast.
Stopwatch & Countdown Timer
A simple stopwatch and countdown timer.
Quick Notes
Take and save quick notes in your browser.