Developer Utilities
JSON, XML, YAML, Base64, JWT, regex, diff, hash, and more dev tools.
15 free tools · No signup · Runs in browser
String Escaper
Escape special characters in strings for JavaScript, JSON, HTML, and more.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
JSON Validator
Validate JSON syntax and get clear error messages for invalid JSON.
XML Formatter
Format and prettify XML code with proper indentation.
YAML Formatter
Format and validate YAML files with clear syntax error reporting.
Base64 Encoder / Decoder
Encode and decode Base64 strings instantly in your browser.
JWT Decoder
Decode and inspect JSON Web Token headers and payloads without verification.
URL Encoder / Decoder
Encode and decode URL strings using percent encoding for links and APIs.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.
Diff Checker
Compare two pieces of code or text and highlight every difference.
Regex Tester
Test and debug regular expressions with live match highlighting.
Cron Expression Parser
Parse cron job expressions and translate them into plain English.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
JSONPath Tester
Test JSONPath expressions against JSON data and see matching results.