Base64 Encoder & Decoder

Convert plain text to Base64 and decode Base64 strings back to readable UTF-8 — with debounced updates as you type.

Use it when debugging API payloads, data URIs, or email attachments — encoding is reversible, not encryption.

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What is Base64 Encoding? A Plain-English Explanation

Base64 turns binary data into safe text. Here's what that means, why it matters, and when you actually need it — with examples.

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FAQ

What is Base64 encoding?

Base64 converts binary data or text into a string of ASCII characters using 64 safe characters (A-Z, a-z, 0-9, +, /). It is used to safely transmit data in emails, URLs, and APIs.

When would I use Base64?

Common uses include encoding images for embedding in HTML/CSS, encoding credentials in HTTP Basic Auth headers, and passing binary data through systems that only support text.

Is Base64 a form of encryption?

No. Base64 is encoding, not encryption. Anyone can decode a Base64 string — it provides no security.

Does this tool handle Unicode and emoji?

Yes. The tool uses UTF-8 encoding before converting to Base64, so it handles all Unicode characters including emoji correctly.

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