Base64 Encoder / Decoder
Encode or decode Base64 instantly — full UTF-8 support, runs in your browser.
Plain Text Input
Base64 Output
What is Base64 used for?
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Embedding images or files directly in HTML/CSS (data:image/png;base64,…)
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Encoding binary data for safe transmission in JSON payloads or HTTP headers
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The middle part of a JWT token is a Base64url-encoded JSON payload