Free Online Developer Tools
Fast, private, and 100% free tools that run entirely in your browser. No signup, no upload, no tracking.
JSON Formatter
Format, validate and beautify JSON data instantly.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to text.
Password Generator
Generate strong, secure random passwords.
QR Code Generator
Create QR codes for URLs, text, and more.
Color Picker
Pick colors and convert between HEX, RGB, HSL.
Word Counter
Count words, characters, sentences and paragraphs.
URL Encoder/Decoder
Encode or decode URLs and URI components.
UUID Generator
Generate random UUIDs (v4) for unique identifiers.
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes from text.
Markdown Preview
Convert Markdown to HTML with live preview.
CSS Minifier
Minify and compress CSS to reduce file size.
JS Minifier
Minify JavaScript code to reduce file size.
Frequently Asked Questions
Are these tools free to use?
Yes, all tools are completely free with no signup required. No hidden costs, no premium tiers.
Is my data safe?
Absolutely. All tools run entirely in your browser. Your data never leaves your device and is never uploaded to any server.
Do these tools work on mobile?
Yes, all tools are fully responsive and work on desktop, tablet, and mobile devices.