Developer Tools — Free Online Tools

JSON formatter, Base64 encoder, diff checker, and other developer utilities.

Available Developer Tools

  • JSON Formatter

    Format, validate, and beautify JSON data. Minify or prettify with syntax highlighting.

  • Base64 Encoder/Decoder

    Encode text to Base64 or decode Base64 to text. Supports UTF-8.

  • URL Encoder/Decoder

    Encode or decode URLs and query parameters. Handle special characters properly.

  • HTML Encoder/Decoder

    Encode HTML entities or decode HTML-encoded text. Prevent XSS attacks.

  • Diff Checker

    Compare two texts and find differences. Highlight additions, deletions, and changes.

  • CSS Minifier

    Minify CSS code to reduce file size. Remove comments, whitespace, and optimize.

  • JavaScript Minifier

    Minify JavaScript code. Remove whitespace and comments to reduce file size.

  • HTML Beautifier

    Format and beautify HTML code with proper indentation and structure.

  • Regex Tester

    Test regular expressions against text. See matches highlighted in real-time.

  • Color Converter

    Convert colors between HEX, RGB, HSL, and other formats.

  • XML Formatter

    Format and beautify XML with proper indentation. Minify XML for production.

  • SQL Formatter

    Format SQL queries with proper indentation and keyword highlighting.

  • Binary Translator

    Convert between binary, decimal, hexadecimal, octal, and text formats.

  • Roman Numeral Converter

    Convert numbers to Roman numerals and vice versa. Supports 1 to 3999.

View all Utility Tools
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