Developer tools
32 tools
Peeking at an API response, turning a log timestamp into local time, trying a regex against a few sample lines — these happen dozens of times a day. Here are more than 30 small developer utilities: format and validate JSON, SQL, XML and YAML; encode and decode Base64, URLs and HTML entities; decode JWTs and generate UUIDs and hashes; build cron expressions and work out subnets and chmod values; and generate CSS gradients, shadows and colour palettes. Data is processed in your browser, so anything you paste is not uploaded.
- JSON FormatterOnline JSON formatting, beautifying and minifying tool
- Timestamp ConverterConvert between Unix timestamp and datetime
- CSS Gradient GeneratorGenerate CSS gradient backgrounds
- Base64 Encoder/DecoderConvert text to/from Base64
- UUID GeneratorGenerate UUID v4 in batches
- URL Encoder/DecoderURL encoding and decoding tool
- Hash GeneratorGenerate SHA hash values
- Regex TesterReal-time regular expression testing
- JWT ParserParse and validate JWT tokens
- Code FormatterFormat JS/HTML/CSS/JSON code
- Color ConverterConvert between RGB/HEX/HSL colors
- Password GeneratorGenerate random passwords
- Cron Expression GeneratorGenerate cron expressions visually
- Color Palette GeneratorGenerate harmonious color schemes
- Image Base64 ConverterConvert images to and from Base64
- CHMOD CalculatorCalculate Unix/Linux file permissions
- NewJSON/CSV ConverterConvert between JSON and CSV formats
- YAML/JSON ConverterConvert between YAML and JSON formats
- HTTP Status CodesComplete HTTP status code reference
- Browser InformationView your browser and device information
- SQL FormatterFormat and beautify SQL queries
- MIME Types ReferenceFile extension and MIME type reference
- Number Base ConverterConvert between binary, octal, decimal and hexadecimal
- Slug GeneratorGenerate URL-friendly slug strings
- Meta Tag GeneratorGenerate HTML meta, Open Graph and Twitter Card tags online
- Escape/Unescape ToolEscape HTML, URL, JSON strings
- NewUTM Link BuilderAdd utm_source, medium and campaign params to tracking URLs
- NewHTML Entity EncoderEncode or decode HTML entities like < and &
- NewXML FormatterPretty-print or minify XML locally in your browser
- NewcURL to CodeConvert cURL commands into fetch or axios snippets
- NewSubnet CalculatorCompute network, mask and usable host range from CIDR
- NewCSS Box Shadow GeneratorVisually tune box-shadow and copy ready-to-use CSS