Encode text to Base64 or decode Base64 strings back to plain text.
Paste or type your text into the input field, then click "Encode" to convert it to Base64 format. To convert Base64 back to readable text, paste the Base64 string into the input field and click "Decode." The result appears instantly in the output area, and you can copy it with one click.
Base64 is a binary-to-text encoding scheme that represents binary data using a set of 64 printable ASCII characters. It is commonly used to transmit data over channels that only support text, such as email (MIME) or embedding images directly in HTML and CSS. The encoding converts every three bytes of input into four characters of output, making the encoded string roughly 33% larger than the original.
No. Base64 is an encoding scheme, not an encryption method. It does not provide any security because anyone can decode a Base64 string without a key. If you need to protect sensitive data, use proper encryption algorithms instead. Base64 is only meant to ensure safe transport of data through text-only channels.
Yes. This encoder handles Unicode characters by first encoding the text as UTF-8 before applying Base64 encoding. This ensures characters from any language, including emojis, are correctly encoded and decoded.
There is no hard limit imposed by this tool. However, because everything runs in your browser, very large inputs may slow down processing depending on your device. For most practical use cases, performance is instantaneous.
Absolutely. All encoding and decoding happens locally in your browser using JavaScript. No data is sent to any server.