Developer Tools
A comprehensive collection of online developer utilities including JSON formatters, code validators, encoders, and converters designed for software engineers.
JSON Viewer & Formatter
Format, validate, beautify, minify, and inspect JSON data instantly online.
Age Calculator
Calculate your exact age in years, months, days, hours, minutes, and seconds.
Random IP Address Generator
Generate random IPv4 addresses within any start and end range instantly.
Random Time Generator
Generate random times between a start and end range, with sorting and milliseconds.
Random UUID Generator
Generate random UUID v4 and time-based UUID v1 identifiers in bulk.
Random JSON Generator
Generate random JSON data with custom depth, elements, data types, and indentation.
JSON Validator
Validate JSON with precise error line & column, then format or minify the result.
Base64 Encode
Encode text to Base64 with UTF-8 support, URL-safe mode, and per-line encoding.
Base64 Decode
Decode Base64 strings back to text with UTF-8 support, URL-safe mode, and error detection.
JWT Decoder
Decode JWT header, payload, and signature, with expiry status and HMAC verification.
UUID Generator
Generate UUID v4, v1, and v7 in bulk with case, hyphen, and brace options.
URL Encoder / Decoder
Percent-encode and decode URLs with component or URI mode and space handling.
HTML Encoder / Decoder
Encode and decode HTML entities like <, >, &, and quotes instantly.
Regex Tester
Test regular expressions with live highlighting, capture groups, flags, and replace.