Base64 Encoder/Decoder

Base64 is an encoding scheme that converts binary data into ASCII text characters. It is widely used in email attachments, image data URLs, JWT tokens, and many other web technologies.

What is Base64 encoding?

Base64 uses 64 ASCII characters (A-Z, a-z, 0-9, +, /) to represent arbitrary binary data as text. The encoded output is about 33% larger than the original but can be safely transmitted through text-based systems.

What is URL-safe Base64?

URL-safe Base64 replaces + and / with - and _ to make the encoded string safe for use in URLs. It is commonly used in JWT (JSON Web Tokens) and web-based authentication systems.

Where is Base64 used?

Base64 is used in email attachments (MIME encoding), HTML image data URLs (data:image/png;base64,...), JWT tokens, API key transmission, and cookie value encoding.

What is Base64 encoding?

Base64 uses 64 ASCII characters (A-Z, a-z, 0-9, +, /) to represent arbitrary binary data as text. The encoded output is about 33% larger than the original but can be safely transmitted through text-based systems.

What is URL-safe Base64?

URL-safe Base64 replaces + and / with - and _ to make the encoded string safe for use in URLs. It is commonly used in JWT (JSON Web Tokens) and web-based authentication systems.

Where is Base64 used?

Base64 is used in email attachments (MIME encoding), HTML image data URLs (data:image/png;base64,...), JWT tokens, API key transmission, and cookie value encoding.