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Base64 Encoder & Decoder for Text and Files

Encode text or binary files to Base64 strings and decode Base64 back to original files or UTF-8 text.

  • 100% free
  • Files stay on your device
  • No sign-up, no watermark
Input Text
Encoded Result

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What is Base64 Encoder & Decoder for Text and Files?

Encode authentication credentials, cryptographic keys, and binary data into safe ASCII characters for HTTP headers, HTML inline data, and data URIs. Complies strictly with RFC 4648 specifications.

How to use Base64 Encoder & Decoder for Text and Files

  1. 1

    Add your file or input

    Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.

  2. 2

    Adjust the options

    Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.

  3. 3

    Process and download

    Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.

Frequently asked questions

Does this encoder support UTF-8 special characters and emojis?

Yes! Many legacy browser tools fail on Unicode characters with btoa(). Our encoder encodes multi-byte UTF-8 character points correctly without exceptions.

What is the difference between standard Base64 and URL-Safe Base64?

Standard Base64 uses "+" and "/" characters with "=" padding. URL-Safe Base64 replaces "+" with "-" and "/" with "_" and strips padding to prevent HTTP URL parameter errors.

Can I encode binary files directly from my hard drive?

Yes. You can drag and drop any file (images, PDFs, keys) to convert raw binary bytes into a Base64 string instantly.

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