Base64url is a base64-based method to encode binary data as URL-encoded ASCII text so that the data can be transported in a URL.

It differs from base64 in that it forbids line separators and provides alternative character mappings for characters that have special meaning in URLs. For example, + in base64 becomes - in base64url and / in base64 becomes _ in base64url.

Base64 Encoder / Decoder




Base64url Resources

Deeper Knowledge on Base64url

JSON Web Encryption (JWE)

A format to represent encrypted data as base64url encoded JSON, defined by RFC 7516

JSON Web Tokens (JWT)

A method to represent claims based security values, defined by RFC 7519

Broader Topics Related to Base64url


A method to encode binary data as ASCII for transport over text-based protocols

Base64url Knowledge Graph