All Tools
Browse all 35 free developer tools grouped by category.
Base64 Encode
Encode text to Base64 with URL-safe variant option
Base64 Decode
Decode Base64 strings to plain text
URL Encode
Encode text for safe use in URLs
URL Decode
Decode percent-encoded URL strings
Hex Encode
Convert text to hexadecimal representation
Hex Decode
Convert hexadecimal strings back to text
HTML Encode
Escape HTML entities for safe display
HTML Decode
Unescape HTML entities back to characters
Regex Tester
Test regular expressions with live highlighting and capture groups
Cron Builder
Build and explain cron expressions visually
Color Converter
Convert between HEX, RGB, and HSL color formats
Cron Expression Builder
Build and explain cron expressions — see next run times in plain English
WCAG Contrast Checker
Check color contrast ratios for WCAG AA and AAA accessibility compliance
CSS to Tailwind Converter
Convert CSS properties to Tailwind CSS utility classes
HTML to JSX Converter
Convert HTML markup to valid JSX for React
SVG to JSX Converter
Convert SVG markup to React JSX components
JSON to TypeScript
Generate TypeScript interfaces from JSON data
CSS Unit Converter
Convert px to rem, em, vw, vh, pt — with custom base font size
Markdown Table Generator
Generate formatted markdown tables from a grid or CSV data
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words
Chmod Calculator
Visual Unix file permission calculator with octal and symbolic notation
Typing Speed Test
Test your typing speed in WPM. Real-time accuracy tracking, multiple passages, instant results.
.gitignore Generator
Generate .gitignore files for Node, Python, React, Go, and 20+ more stacks