🛠️ Free Developer Tools
25+ tools that run in your browser. No signup, no tracking, no ads.
🔒 Security
Password Strength Analyzer
Entropy-based scoring with real-time crack-time estimates
Password Generator
Generate secure random passwords with custom rules
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 hash any text instantly
Dev Security Checklist
Essential security checklist for web developers
AI Security Checklist
Security best practices for AI/ML applications
📝 Code & Text
JSON Formatter
Format, validate, and beautify JSON with syntax highlighting
JSON Error Explainer
Paste broken JSON — get human-readable error explanations
Regex Tester
Test regular expressions with real-time matching and groups
Diff Checker
Compare two texts and see differences highlighted
Markdown Preview
Live markdown editor with instant preview
Lorem Ipsum Generator
Generate placeholder text for your designs
🔧 Encoding & Conversion
JWT Decoder
Decode and inspect JSON Web Tokens instantly
Base64 Encoder/Decoder
Encode and decode Base64 strings
URL Encoder/Decoder
Encode and decode URL components
Unix Timestamp Converter
Convert between Unix timestamps and human dates
🎨 Design & CSS
Color Picker
Pick colors in HEX, RGB, HSL with palette generation
CSS Gradient Generator
Create beautiful CSS gradients with live preview
Box Shadow Generator
Design CSS box shadows with visual controls
⚡ Productivity
Cron Parser
Explain cron expressions in plain English with next run times
Keyword Mixer
Generate keyword combinations for SEO and ads
Website Audit
Quick audit of any website's SEO and performance
QR Code Generator
Generate QR codes for URLs, text, WiFi, and more
Pomodoro Timer
Focus timer with break reminders
Image Compressor
Compress images in-browser without uploading
DevTools Collection
Multi-tool dashboard for quick dev tasks