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Creolabs Tools

Popular

Base64
Encode and decode Base64 strings

Encoding

Base64
Encode and decode Base64 strings
HTML Entities
Encode and decode HTML entities in text
Unicode
Inspect Unicode code points and decode Unicode escape sequences
URL Encode
Encode and decode URL components and full URLs

Text

JSON Format
Format and minify JSON with configurable indentation
Markdown Preview
Live preview of Markdown rendered as HTML
Regex Tester
Test regular expressions with live match highlighting and capture groups
String Utilities
Transform text with uppercase, lowercase, trim, reverse, word count, and case conversion
Text Diff
Compare two texts and visualize additions and deletions
XML Format
Format and minify XML with configurable indentation
YAML ↔ JSON
Convert between YAML and JSON formats bidirectionally

Crypto

Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes from text input
HMAC Generator
Compute HMAC-SHA256 or HMAC-SHA512 message authentication codes
Password Generator
Generate cryptographically secure random passwords with configurable options
UUID Generator
Generate UUIDs in version 1, 4, or 7 format

Network

HTTP Status
Look up HTTP status codes — browse all codes by category or search by code, name, or description
JWT Decode
Decode and inspect JWT tokens — view header, payload, and expiration status
Query String
Parse and build query strings — view and edit key-value pairs with bidirectional reconstruction
URL Parser
Parse and inspect URLs — view protocol, host, path, query parameters, and fragment

Dates

Date Diff
Calculate the difference between two dates — years, months, days, hours, minutes, and seconds
Date Formatter
Format dates in multiple styles — ISO 8601, RFC 2822, locale-specific, and more
Timezone Converter
Convert date and time between any two IANA timezones with DST handling
Unix Timestamp
Convert Unix timestamps to human-readable dates and vice versa

Converters

Color Converter
Convert colors between HEX, RGB, HSL, and oklch formats with a live preview swatch
CSV ↔ JSON
Convert bidirectionally between CSV and JSON — auto-detects input format
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and custom bases (2–36)
TOML ↔ JSON
Convert bidirectionally between TOML and JSON — auto-detects input format with detailed error positions
Unit Converter
Convert between units of length, weight, temperature, data size, speed, and time