Quoted-Printable Encoder/Decoder - Email Encoding Tool

Encode and decode Quoted-Printable text for email. Convert special characters to =XX format. Essential for MIME email headers and bodies.

Input Text

Wrap lines at 76 characters (MIME standard)

Output

Encoding Stats

Encode or decode to see statistics

Common Encoded Characters

=	`=3D`	Equals sign
Space (trailing)	`=20`	Must encode at EOL
Tab	`=09`	Horizontal tab

é	`=C3=A9`	UTF-8 encoded
€	`=E2=82=AC`	Euro sign
ñ	`=C3=B1`	Spanish ñ

CRLF	`=0D=0A`	Line break
Soft break	`=` at EOL	Line continuation

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Frequently Asked Questions

Quoted-Printable (QP) is a MIME encoding for email that represents non-ASCII characters as =XX (hex). It keeps ASCII text readable while encoding special characters.

Primarily in email for headers (Subject, From) and body text with non-ASCII characters. It's specified in RFC 2045 as a Content-Transfer-Encoding.

Characters outside ASCII printable range (33-126) are encoded as = followed by two hex digits. The equals sign itself becomes =3D. Line breaks are =0D=0A.

Quoted-Printable keeps ASCII text human-readable (good for mostly-text emails). Base64 encodes everything, making it unreadable but more compact for binary data.

Lines over 76 characters use = at line end as a soft break. When decoded, these breaks are removed, joining the text. Required by MIME standards.

Since = introduces escape sequences, literal equals signs must be encoded to prevent confusion. =3D is the hex code for = (ASCII 61).

Technically yes, but it's inefficient for binary data (every byte becomes 3 characters). Use Base64 for images, attachments, and other binary content.

Unicode is first converted to UTF-8 bytes, then each byte is encoded. A character like 'é' (C3 A9 in UTF-8) becomes =C3=A9.

Yes, extensively in email. Modern email clients automatically handle QP encoding/decoding. It's also used in vCard files and some HTTP contexts.

ASCII letters (A-Z, a-z), digits (0-9), and some punctuation can pass through unencoded. Spaces are usually kept but trailing spaces must be encoded.

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