SkaiKit
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Password / security tools

Base64 encode / decode

Encode or decode UTF-8 text with Base64 or Base64url.

Runs in your browser

UTF-8 text up to 1 MiB, or encoded input up to 1.4 MiB. Base64url accepts unpadded input. ASCII spaces and line breaks in encoded input are ignored.

Base64 is an encoding, not encryption. This tool converts UTF-8 text; it does not decode arbitrary binary files. Invalid alphabets, padding and invalid UTF-8 are rejected.