Base64 Converter
Encode and decode Base64 in your browser — UTF-8 safe, instant, and nothing is uploaded.
How to use
- Paste your text (to encode) or your Base64 (to decode) into the input box.
- Choose Encode or Decode — it converts as you type.
- Copy the result to your clipboard, or download it as a text file.
FAQ
Is my data sent anywhere?
No. Encoding and decoding happen entirely in your browser. Your text is never uploaded to a server, so it works offline and stays private.
What is Base64?
Base64 is a way of writing any data using only plain text characters (A–Z, a–z, 0–9, + and /). It’s widely used to embed images in CSS or HTML, send data in URLs and JSON, and store small files as text.
Does it handle emoji and other languages?
Yes. The converter is UTF-8 safe, so accented letters, non-Latin scripts and emoji all encode and decode correctly. Decoding also accepts URL-safe Base64 (using - and _).