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Base64 Encoder / Decoder
Encode plain text or decode Base64 strings instantly. Supports standard and URL-safe Base64. Useful for JWT tokens, data URIs and API payloads.
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What is Base64?
Base64 is an encoding scheme that converts binary data to ASCII text. It is commonly used in JWTs, data URIs for embedding images in HTML/CSS, email attachments and API authentication headers.
URL-safe Base64
Standard Base64 uses + and / characters which are not safe in URLs. URL-safe Base64 replaces + with - and / with _ and removes padding = characters. Use this for JWT tokens and URL parameters.