Quoted-Printable Encoder / Decoder
Encode or decode MIME Quoted-Printable text and =?UTF-8?Q?…?= email headers — 100% in your browser, no upload
🔒 Encoded and decoded entirely in your browser — nothing is uploaded. Handles UTF-8, soft line breaks, and =?UTF-8?Q?…?= email headers.
What Quoted-Printable does
Quoted-Printable is the MIME encoding that lets 8-bit data pass through mail systems that only guarantee 7-bit ASCII. Bytes that are already safe printable ASCII stay as themselves, while the equals sign, control characters, and every byte of a non-ASCII character become =XX using uppercase hexadecimal. Long lines are wrapped at 76 characters with a trailing equals sign, a soft line break that the decoder removes.
Encode, decode, and read email headers
Switch to Decode to paste a raw email body or a subject such as =?UTF-8?Q?...?= and get readable text back. This tool handles both the body form and the RFC 2047 encoded-word header form, in Q or B (Base64) encoding and any charset, and it runs entirely in your browser so nothing is uploaded.
Frequently asked questions
What is a soft line break in Quoted-Printable?
An equals sign as the last character of a line marks a soft line break. It means the line was wrapped only to stay within 76 characters, so the decoder joins it to the next line and drops the marker. A real equals sign in the data is always written as =3D.
Can it decode =?UTF-8?Q? email subject lines?
Yes. In Decode mode it recognizes RFC 2047 encoded-words such as =?UTF-8?Q?...?= and =?UTF-8?B?...?=, converts underscores to spaces in the Q form, decodes Base64 in the B form, and applies the named charset such as UTF-8 or ISO-8859-1.