What Is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents data using 64 printable ASCII characters (A–Z, a–z, 0–9, + and /). It is commonly used to safely transmit text or binary data over channels that only support plain text, such as email, URLs, or JSON payloads.
This tool converts any text you type or paste into its Base64 representation instantly, entirely inside your browser — nothing is uploaded or stored.
How to Use the Base64 Encoder
- Type or paste the text you want to encode into the input field.
- The Base64-encoded result appears automatically below.
- Click "Copy" to copy the encoded result to your clipboard.
Frequently Asked Questions
Is it safe to encode sensitive text here?
Yes. All encoding happens locally in your browser using JavaScript — your text is never sent to a server.
Can I reverse the encoding?
Yes, Base64 encoding is fully reversible. Use a Base64 Decoder to convert the encoded string back to the original text.
Does it support Unicode characters and emoji?
Yes, the encoder correctly handles Unicode text, including emoji and non-Latin scripts, by first converting it to UTF-8 bytes before encoding.