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Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings back to plain text. Instant, private, and runs entirely in your browser.

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Frequently Asked Questions about Base64 Encoder & Decoder

What is Base64 encoding?▼
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It's commonly used to embed images in HTML/CSS, transmit data in URLs, and encode email attachments.
Is Base64 encryption?▼
No. Base64 is encoding, not encryption. Anyone can decode Base64 data. It's designed for safe data transport, not security. For encryption, use tools like AES or proper TLS/SSL connections.
Why does Base64 make data larger?▼
Base64 encoding increases data size by approximately 33% because it uses 4 characters to represent every 3 bytes of data. This trade-off enables safe transmission through text-only channels.

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