Free Base64 Encoder and Decoder
Encode or decode Base64 in your browser. 100% 在浏览器本地处理。绝对隐私，零上传——文件不会离开此设备。
Base64 encode and decode converts text to Base64 or back again in this browser.
Base64 is not encryption. Anyone can decode it. Do not use it to hide a password or a key.
Questions
Why did decoding fail?
The input has to be valid Base64. A truncated string or extra characters will not decode.
Does this upload the text?
No. Encoding and decoding stay in this tab.