Quoted-Printable Encode/Decode
Online Quoted-Printable encode and decode tool with QP conversion, soft wrapping and line-break control for email body and MIME content handling
Encoding options
Quoted-Printable Guide
Quoted-Printable (QP) is a MIME-friendly text encoding format designed for 7-bit-safe transport. This tool supports encoding, decoding, soft wrapping, and line-break controls for practical email workflows.
Encoding rules
Characters to encode
- ASCII control chars (0-31, 127)
- Equal sign = becomes =3D
- Non-ASCII chars are encoded by UTF-8 bytes
- Trailing spaces and tabs are encoded
Soft-wrap rule
- Recommended max line length is 76 chars
- Long lines append = as continuation marker
- Decoding removes soft wraps automatically
Encoded format
- Pattern is =XX (hex byte)
- Example: =0D=0A means CRLF
- Example: =E4=B8=AD means Chinese character 中
Use cases
- Email body and MIME content processing
- Safe transfer of multilingual text in legacy systems
- Troubleshooting mail garbling and encoding mismatch
- Batch QP conversion in scripts
Tips
- Enable 76-char soft wrap for email standards.
- Disable line-break encoding if raw line breaks must be preserved.
- If warnings appear on decode, check for truncated or mixed input.