What does Quoted-Printable do?

Quoted-Printable (RFC 2045 §6.7) keeps printable ASCII readable while escaping non-ASCII and special bytes as =XX hex sequences, so 8-bit content survives transport over 7-bit email systems.

Why are some characters shown as =XX?

Any byte that is not safe printable ASCII — accented letters, the = sign, and control bytes — is written as an equals sign followed by its two-digit hexadecimal value.

Is anything sent to a server?

No. All encoding and decoding runs in your browser; your text never leaves your device.

Quoted-Printable Encoder

Quoted-Printable encoder and decoder

Quoted-Printable is the MIME content-transfer encoding defined in RFC 2045 §6.7. It is designed for content that is mostly readable ASCII with the occasional 8-bit character: printable bytes pass through untouched, while everything else — accented letters, the = sign, and control characters — is escaped as an =XX hexadecimal sequence. Long lines are soft- wrapped at 76 characters with a trailing =.

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