Developer Utilities
15 UtilitiesFormat and validate JSON, test regex patterns, encode/decode Base64 and URLs, generate v4 UUIDs, convert JSON/CSV/YAML/XML, convert Hex/Text, and decode JWT tokens. All tools run 100% client-side with zero data transmitted to any external server.
JSON Formatter
Format, pretty-print, validate, and minify JSON strings with instant syntax error detection, line indicators, and custom indentation.
JSON Validator
Validate JSON strings with detailed line and column error indicators, key counters, data type inspection, and payload sizing.
Base64 Encoder / Decoder
Encode and decode Base64 strings with full Unicode (UTF-8) character and emoji support, plus optional URL-safe Base64 formatting.
URL Encoder / Decoder
Safely encode text and query parameters into standard percent-encoded URI strings or decode encoded URLs into human-readable text.
Regex Tester
Test JavaScript regular expressions with real-time match highlighting, group capturing, error debugging, and common preset patterns.
UUID Generator
Generate cryptographically secure Version-4 UUIDs in bulk using the native Web Crypto API with custom casing, hyphens, and wrapper quotes.
CSV & TSV to JSON Converter
Convert CSV (comma-separated), TSV (tab-separated), or custom delimited spreadsheet data into structured JSON objects or 2D arrays with automatic number/boolean type parsing, custom delimiters, and minify options.
JSON to CSV & TSV Formatter
Transform structured JSON objects or nested arrays into standard CSV or TSV spreadsheet format with custom delimiters, automatic quote escaping, and nested key flattening.
JSON to YAML Converter
Convert JSON configurations, Swagger API specs, and package manifests into clean, human-readable YAML with proper indentation, arrays, nested maps, and scalar type formatting.
YAML to JSON Converter
Parse YAML specifications, Kubernetes manifests, GitHub Actions workflows, and CI/CD configs into clean, valid, formatted JSON with customizable indentation and minification.
JSON to XML Converter
Convert JSON documents, API payloads, and objects into valid, well-formed XML with customizable root tags, array item tags, XML declarations, and indentation formatting.
XML to JSON Converter
Parse XML documents, RSS news feeds, SVG structures, and SOAP payloads into clean JSON objects with automatic type conversion and attribute preservation.
Hex to Text Converter
Decode hexadecimal byte strings into readable UTF-8, ASCII, or Unicode plain text with automatic delimiter detection (spaces, colons, 0x prefixes, and \x escape codes).
Text to Hex Converter
Encode plain text, strings, symbols, and emojis into hexadecimal byte sequences with customizable delimiters (space, comma, 0x prefix, \x escape, or continuous hex).
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) safely in your browser. View header algorithms, payload claims, expiration timestamps, issued-at dates, and signature components with zero server transmission.