50 Best Developer Tools
Formatters, Encoders, Validators, Converters, Security & Cryptography Utilities for Engineers
Regex Tester & Matcher
Test regular expressions against sample text with live capture groups, flags, and match highlights.
Text & Code Diff Comparison Tool
Compare two text blocks side-by-side or inline to highlight additions, deletions, and diffs.
User Agent String Inspector
Parse User-Agent strings to extract browser version, OS, rendering engine, and device type.
String Case Converter (Camel, Snake, Kebab)
Convert text and variable names between camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE.
Word, Character & Byte Counter
Real-time word counter, character count (with/without spaces), paragraphs, bytes, and reading time.
JavaScript Keycode & Event Inspector
Press any key to inspect `event.key`, `event.code`, numeric `keyCode`, and modifier states.
Duplicate Line Remover & List Sorter
Remove duplicate lines from text lists, sort alphabetically, reverse, and trim whitespace.
JSON Schema Validator & Generator
Generate JSON Schema draft definitions from raw sample JSON and validate data compliance.
URL Parser & Query Parameter Extractor
Deconstruct complex URLs into protocol, host, port, path, and extract query string keys/values.