Dev Tools
Developer utilities for everyday coding tasks. Format and validate JSON, test regex patterns, decode JWTs, and more. Built for speed — paste your data and get instant results with syntax highlighting and validation feedback.
JSON Formatter
Format, validate, and beautify JSON data. Minify JSON or view it in a collapsible tree.
JWT Decoder
Decode JSON Web Tokens (JWT) header, payload, and signature offline with expiration inspection.
Base64 Encoder / Decoder
Bidirectional Base64 encoder and decoder for plain text strings and files with Data URI export.
URL Encoder / Decoder
Encode and decode URLs and inspect parsed query parameter key-value pairs in a structured table.