Free Developer Tools
15+ essential tools for developers. No signup, no ads, no tracking. All processing happens in your browser.
JSON Formatter
Format, validate, and minify JSON data with syntax highlighting
FormattersBase64 Encode/Decode
Encode text to Base64 or decode Base64 to plain text
EncodersURL Encode/Decode
Encode and decode URLs with percent-encoding
EncodersJWT Decoder
Decode and inspect JSON Web Tokens (JWT) without verification
SecurityUUID Generator
Generate UUID v4 identifiers, single or in bulk
GeneratorsHash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes
SecurityRegex Tester
Test regular expressions with real-time match highlighting
TestingColor Converter
Convert between HEX, RGB, and HSL color formats
DesignTimestamp Converter
Convert Unix timestamps to human-readable dates and back
ConvertersLorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words
GeneratorsCron Expression Generator
Build and decode cron expressions with visual editor
DevOpsHTML Entity Encoder
Encode and decode HTML entities (named and numeric)
EncodersMarkdown Preview
Write Markdown and see rendered HTML in real-time
FormattersCSS Minifier
Minify and beautify CSS with size comparison stats
FormattersPassword Generator
Generate strong, customizable passwords with strength meter
SecurityWhy DevToolKit?
- ✓ 100% free, no signup required
- ✓ All processing in your browser
- ✓ No data sent to any server
- ✓ No ads, no tracking
- ✓ Fast, modern, mobile-friendly