utilities.dev

Essential developer tools for everyday coding tasks

Simple, fast, and free online utilities

All Utilities

10 utilities
Encoding
Base64 Encoding
Encode and decode text using Base64 encoding. Perfect for handling binary data in text format.
encodingbase64decode+2
Formatting
JSON Formatter
Format, minify, and validate JSON data with syntax highlighting and error detection.
jsonformatvalidate+3
Testing
Regex Tester
Test regular expressions with real-time matching, capture groups, and detailed results.
regexregular expressionpattern+3
Security
JWT Decoder
Decode and inspect JWT tokens with detailed header, payload, and signature information.
jwttokendecode+3
Design
Color Converter
Convert colors between different formats including HEX, RGB, HSL, HSV, and more with live preview.
colorhexrgb+5
Development
Cron Expression Parser
Parse and understand cron expressions with human-readable descriptions and upcoming execution times.
cronscheduleparser+3
Development
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Support for seconds and milliseconds.
unixtimestampepoch+4
Development
Text Diff Tool
Compare two text blocks and highlight differences line by line. Perfect for code reviews and document comparisons.
diffcomparetext+4
Design
SVG Viewer
View, format, validate, and analyze SVG files with real-time preview. Sanitize SVGs and extract metadata.
svgvectorgraphics+5
Formatting
Markdown Viewer
Preview, format, and analyze Markdown files with real-time HTML output. Extract metadata, calculate reading time, and validate syntax.
markdownmdpreview+6