Base64 Encode / Decode Online
Encode text or files to Base64 and decode Base64 back — with full UTF-8 support for Cyrillic, Chinese and emoji. Everything runs locally.
Frequently asked questions
Does it support Cyrillic and emoji?
Yes, text is encoded as UTF-8 first, so any Unicode characters survive the round trip.
Can I encode a file to Base64?
Yes — switch to the File tab, choose any file and get a Base64 string or data URI.
Is Base64 encryption?
No, it's just an encoding — anyone can decode it. Never use it to protect secrets.