Base64 Encoder / Decoder

Encode or decode Base64 payloads with UTF-8 support. Handy for JWTs, data URIs and binary transport in JSON.

Why use our Base64 Encoder / Decoder?

Encode or decode Base64 payloads with UTF-8 support. Handy for JWTs, data URIs and binary transport in JSON.

Encode or decode Base64 payloads with UTF-8 support. Handy for JWTs, data URIs and binary transport in JSON.

A quick, free way to handle base64 encoder — no sign-up, no install, results in milliseconds.

Encoding and decoding run locally, with full control over the output format.

Decode a Base64-encoded JSON payload and pretty-print the result. Perfect for JWT payload inspection.

Percent-encode or decode URLs and query strings. RFC 3986 compliant, UTF-8 safe, with component and full-URL modes.

Convert JSON to a compact Base64-encoded string. Great for embedding JSON in URLs, cookies or headers.

Decode JSON Web Tokens to inspect the header, payload and signature — verify claims and expiry in-browser.

Escape a value for safe inclusion in a CSV cell — quotes fields containing commas, quotes or newlines.

Reverse CSV field quoting — strips surrounding quotes and unescapes doubled quotes.