Base64 Encoder / Decoder
Encode and decode Base64 text instantly.
Encode text to Base64 or decode Base64 back to text. Everything runs locally in your browser.
How it works
- 1 Paste your text or Base64 string into the input box.
- 2 Choose Encode or Decode.
- 3 Copy the result with a single click.
Common use cases
- Embed images or files inline as Base64 data URIs.
- Decode Base64 tokens, headers and JWT segments.
- Encode credentials for HTTP Basic Auth headers.
- Move binary data safely through text-only channels.
Frequently asked questions
What is Base64?
Base64 is an encoding scheme that represents binary data using 64 printable ASCII characters, commonly used to embed data in URLs, emails and JSON.
Does it support Unicode?
Yes. Text is encoded as UTF-8 before being Base64-encoded, so emoji and non-Latin scripts work correctly.
Is my data private?
Yes. Encoding and decoding happen entirely in your browser — nothing is uploaded.