Yes. We use TextEncoder, which always emits UTF-8 — so emoji and non-Latin scripts round-trip cleanly.

What separator should I use?

A space is conventional and human-readable. Empty separator works too — bytes are still parsed in groups of 8 bits.

Why are some characters multiple bytes?

In UTF-8, ASCII characters are 1 byte, accented Latin characters are typically 2 bytes, and emoji are usually 4 bytes.

Files never leave your device

Translate any text into binary and back. Choose ASCII or UTF-8, set the byte separator, and copy the result.

Byte separator

Text

Binary