Free Online Tools for Developers & Professionals
Fast, free, and private. No sign-up required. All tools run in your browser.
Developer Tools
JSON Formatter & Validator
Format, validate, and minify JSON data
Base64 Encoder/Decoder
Encode and decode Base64 strings
URL Encoder/Decoder
Encode and decode URL components
Regex Tester
Test regular expressions with live matching
Diff Checker
Compare two texts and find differences
Hash Generator
Generate SHA-1, SHA-256, SHA-512 hashes
Markdown Preview
Write and preview Markdown in real-time
Color Converter
Convert colors between HEX, RGB, and HSL
Lorem Ipsum Generator
Generate placeholder text for designs
Image Compressor
Compress PNG, JPG, WebP images online
Merge PDF
Combine multiple PDF files into one
Productivity Tools
Pomodoro Timer
Focus timer with work and break intervals
Word Counter
Count words, characters, sentences, and reading time
Meeting Cost Calculator
Calculate the real cost of your meetings
Invoice Generator
Create and download professional PDF invoices
Time Zone Converter
Convert times between time zones
Password Generator
Generate strong, secure random passwords
QR Code Generator
Generate QR codes from text or URLs
Unit Converter
Convert length, weight, temperature, and more
YouTube Thumbnail Downloader
Download YouTube thumbnails in all sizes
Text to Speech
Convert text to speech with multiple voices
Tip Calculator
Calculate tips and split bills
Text Sorter
Sort text alphabetically, by length, or remove duplicates