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Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings.

Input Text
Output Result

All About Base64 Encoder / Decoder

What is Base64 Encoder / Decoder?

Base64 Encoder / Decoder securely encodes and decodes plain text strings to and from Base64 binary-to-text format in your browser.

Common Use Cases

  • Encoding credentials for Basic Authentication headers.
  • Embedding simple strings or JSON configurations in configuration files.
  • Safely passing text payloads through URLs.

How to Use Base64 Encoder / Decoder

  1. Input raw text to encode, or copy Base64 code into the editor.
  2. Click 'Encode' or 'Decode' buttons based on your goal.
  3. Copy the resulting output string from the output card.

Frequently Asked Questions

Q: Does this tool require an internet connection?
A: No. This tool operates entirely in your web browser client-side. It does not require any server calls, so it works completely offline.
Q: Is there any size or length limit on the inputs?
A: There is no strict limit. You can paste large volumes of text or numbers and convert or analyze them instantly.
Q: Is my data uploaded or stored?
A: No. All calculations, parsing, and formatting are executed locally on your device. We do not store, view, or upload any of your input text.