Base64 UTF-8

Base64 is not encryption. Standard requires correct = padding; URL-safe does not accept =. Whitespace and line breaks in Base64 are not ignored; noncanonical pad bits, invalid UTF-8 and incomplete Unicode are rejected. Text fields normalize newlines to LF; downloads preserve decoded line endings and BOM.

Maximum 200,000 UTF-16 text units and 800,000 Base64 characters. UTF-8 text only, not binary files.

Free, no account, and no content uploads or storage. Runs on your device.