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Base64 Encoder / Decoder

Converter

Encode text or decode Base64 strings in your browser.

Text or Base64

Mode

About This Tool

Base64 encodes binary data as ASCII text using 64 printable characters. It's used in email attachments (MIME), embedding images in HTML/CSS, and transmitting binary data in JSON APIs. Base64 increases size by ~33% but enables text-safe binary transmission.

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