Developer Utilities
Reliable browser-only tools for developers: JSON validation, Base64 encoding, UUID generation, hash calculators, and color format converters.
JSON Formatter
Prettify, format, and indent JSON strings with syntax validation
JSON Validator
Validate JSON syntax and report exact structural error locations
JSON Minifier
Compress JSON by stripping whitespace and newlines for APIs
Base64 Encode
Encode plain text or Unicode strings into Base64 format
Base64 Decode
Decode Base64 encoded strings back to human-readable text
URL Encode
Encode query parameters and strings for web URLs
URL Decode
Decode percent-encoded URL parameters into human-readable text
HTML Entity Encode
Escape special characters into HTML entities to prevent XSS
HTML Entity Decode
Decode HTML entities back to raw HTML characters
UUID / GUID Generator
Generate cryptographically random UUID v4 identifiers
Unix Timestamp Converter
Convert Unix epochs to human-readable dates and ISO strings
Hex to RGB Converter
Convert hexadecimal color codes (#FFFFFF) to RGB CSS values
RGB to Hex Converter
Convert red, green, blue color values to hexadecimal HEX codes