Developer Tools
Format, validate, encode, and decode data. Free online tools for developers.
JSON Formatter
Format and beautify JSON data online. Paste raw JSON and get a nicely indented, readable version instantly.
JSON Validator
Validate JSON data online. Check if your JSON is syntactically correct with detailed error messages including line and column numbers.
JSON Viewer
View and explore JSON data in an interactive collapsible tree. Perfect for navigating large JSON structures.
Base64 Encoder
Encode text to Base64 online. Convert any string into a Base64-encoded representation for safe transmission or storage.
Base64 Decoder
Decode Base64 strings online. Convert Base64-encoded data back to readable text instantly.
JWT Decoder
Decode JWT tokens online. Inspect the header, payload claims, and signature of any JSON Web Token instantly.
UUID Generator
Generate UUIDs (v4) online. Create single or bulk universally unique identifiers instantly for development and testing.