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Base64 Encoder / Decoder

Fast, accurate Base64 encoding and decoding in your browser. Handles Unicode text correctly. Useful for encoding API keys, embedding data in URLs, and working with binary-safe data transfer formats.

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Plain Text Input

Base64 Output

Output will appear here…

💡 Tip: Base64 encoding increases data size by ~33%. It's not encryption — it's encoding. Use HTTPS for secure data transfer.