Paste raw JSON and instantly format it with proper indentation, syntax validation, and structure clarity. Runs entirely in your browser — nothing leaves your machine.

Encode any plain text string into its Base64 representation. Useful for HTTP headers, data URIs, and API authentication tokens.

Decode a Base64-encoded string back to its original plain text. Ideal for debugging encoded HTTP responses, JWTs, and data URIs.

Generate cryptographically random UUID v4 identifiers in real time. Enter a number (1–50) to generate multiple UUIDs at once.