Base64 / URL Encoder & JWT Decoder
Encode or decode text in Base64 and URL-safe formats, and decode JWT tokens to inspect headers and payloads.
Text Encoder / Decoder & JWT Viewer
Encode/decode Base64 or URL text, or inspect JWT tokens by decoding their header and payload.
About Encoding
Base64 encoding is used to safely transmit binary data (like images or files) as text, often in emails, APIs, or web data URIs.
URL encoding replaces unsafe characters (like spaces or symbols) with percent codes (e.g. %20) so they can be used safely in links and query strings.
About JWT decoding
A JSON Web Token (JWT) has three parts: header.payload.signature, where each part is Base64URL-encoded.
This tool decodes the header and payload so you can inspect claims like sub, exp, or iat. It does not verify the signature or check if the token is trustworthy.