About Base64
Base64 is a way to represent binary data using 64 printable ASCII characters. It is commonly used for encoding small payloads in URLs, JSON or HTML data attributes.
Frequently asked questions
Does this Base64 tool support UTF-8?
Yes. The tool encodes UTF-8 properly using TextEncoder, so emoji and non-Latin scripts round-trip correctly.
Is URL-safe Base64 supported?
Yes. Tick "URL-safe" to use the - and _ alphabet without padding, suitable for URLs and JWT tokens.