Local
developer
JSON Formatter
Format, minify, and validate JSON with friendly browser-only errors.
Developer tools
Small formatters for big little messes.
Developer tools for quick formatting and inspection jobs that should not require opening an IDE.
Open JSON Formatter
Local
developer
XML Formatter
Format and validate XML in your browser with readable indentation and friendly errors.
Local
developer
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to readable UTF-8 text.
Local
developer
JSON Validator
Validate JSON and get friendly browser-only parse errors with line and position when available.
Local
developer
JSON Minifier
Validate and minify JSON with before-and-after size metrics.
Local
developer
XML Validator
Validate XML locally, inspect root elements, and get readable parser errors.
Local
developer
HTML Formatter
Pretty-print HTML text with indentation options and a compact minify mode.
Local
developer
CSS Formatter
Format or minify CSS text with simple indentation controls and friendly failure handling.
Local
developer
JavaScript Formatter
Format JavaScript as text without executing it, with indentation and friendly parse warnings.