UTF8

UTF-8 Subject Encoder & Decoder — Full

Server-side encoding + offline-ready frontend. Charset selection, history, presets, .eml drag/drop preview.

Server API: http://localhost:5000

Encoder

Type a subject, choose encoding & charset, encode client-side or via server.

Client encode Server encode

Base64 Q-Printable UTF-8 MIME Q

Preview: —

Copy history (local):

Decoder & .eml preview

Paste an RFC-2047 encoded subject or drop an .eml file to extract & decode the Subject header.

Decoded output

.eml preview:

Drop an .eml file here to extract Subject header.