The Ultimate Developer Utility Suite
Format, validate, and convert data instantly in your browser—100% client-side and blazing fast. Privacy-focused tools for modern engineers.
Most Popular
View all categoriesJSON Formatter
Make messy, minified JSON readable with customizable indentation.
JSON Validator
Check JSON validity with precise line/column errors.
Base64 Decoder
Decode Base64 text back to readable Unicode instantly.
URL Encoder
Safely percent-encode text for use in URLs and query strings.
JSON to YAML
Convert JSON documents to clean, indented YAML.
JSON to XML
Convert JSON into well-formed XML markup.
JWT Decoder
Inspect JWT header, payload, and signature with syntax highlighting.
100% Client-Side
Your data never leaves your machine. Processing happens entirely in your local browser environment for maximum security.
Blazing Fast
Optimized algorithms powered by Web Workers ensure UI responsiveness.