• Utility

Base64 Encoder / Decoder

Encode or decode Base64 strings in your browser. Supports UTF-8 text and raw binary data.

• About this tool

What is Base64 Encoder / Decoder?

Encode text to Base64 or decode Base64 strings back to plain text — instantly in your browser with full UTF-8 support.

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• FAQ

Frequently asked questions

What is Base64?

Base64 is an encoding scheme that represents binary data using 64 printable ASCII characters. It is commonly used to embed binary content in JSON, HTML, and email.

Is encoding the same as encryption?

No. Base64 is encoding, not encryption — anyone with the encoded string can decode it immediately. Never use Base64 to protect sensitive data.

Why does my decoded output look garbled?

The input may contain binary data rather than plain text, or the Base64 string may be invalid or truncated.

What is the difference between Base64 and Base64URL?

Base64URL replaces + with - and / with _ to make the string safe for URLs and HTTP headers. JWTs use Base64URL encoding.

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