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Base64 Encoder / Decoder

Encode text or decode Base64 strings instantly online. Convert between plain text and Base64 encoding for data URLs, authentication headers, and API tokens.

Used 46.9K times today

How to Use Base64 Encoder / Decoder

  1. 1

    Enter your input

    Type or paste the text you want to encode, or paste a Base64 string you want to decode.

  2. 2

    Choose Encode or Decode

    Select the "Encode" tab to convert plain text to Base64, or "Decode" to convert Base64 back to text.

  3. 3

    Copy the result

    Click "Copy" to copy the output to your clipboard for use in your code, headers, or configuration.

Frequently Asked Questions

What is Base64 encoding used for?
Base64 encodes binary data as ASCII text so it can be safely transmitted over text-based protocols. Common uses include data URIs for images, HTTP Basic Authentication headers, and encoding binary attachments in emails (MIME).
Is Base64 the same as encryption?
No. Base64 is an encoding scheme, not encryption. Encoded data can be decoded by anyone without a key. Never use Base64 to secure sensitive information.
Does it support Unicode and special characters?
Yes. The encoder uses UTF-8 encoding, so emojis, accented characters, and non-Latin scripts are all handled correctly.

About Base64 Encoder / Decoder

The Base64 Encoder / Decoder is an essential utility for developers working with APIs, authentication systems, and data serialisation. Base64 encoding is everywhere in modern web development — from embedding images as data URIs in CSS, to encoding credentials in HTTP Basic Auth headers, to storing binary data in JSON payloads.

This tool handles both encoding (text to Base64) and decoding (Base64 to text) in a single interface, with full support for Unicode characters. Everything runs client-side, ensuring your tokens, passwords, and sensitive strings are never exposed to external servers.

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