Base64 Encoder / Decoder
Encode and decode Base64 with full UTF-8 support, so Chinese and emoji survive the round trip. Free, client-side, nothing is uploaded.
Frequently Asked Questions
- Why do Chinese characters turn into garbled text with other tools?
- Because those tools use the outdated ASCII-only btoa/atob functions. This one converts to UTF-8 bytes first, so Chinese, Japanese and emoji round-trip correctly.
- Is Base64 encryption?
- No. Base64 is an encoding, not encryption — anyone can decode it instantly. Never use it to protect passwords or secrets.