Base64 Encode & Decode
Encode text to Base64, or decode it back — with proper UTF-8 handling, so accents, emoji and CJK text survive the round trip.
Runs 100% in your browser. Encoding happens on this device. Base64 is an encoding, not encryption — anyone can decode it.
Your input never leaves this page — there is no Hermet server to send it to, and nothing you paste is saved anywhere. Reload with your browser’s Network tab open and watch: no request carries your data, because no request is made at all.