← EspToolKit Home

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
Type a subject, choose encoding & charset, encode client-side or via server.
Preview: —
Copy history (local):
Paste an RFC-2047 encoded subject or drop an .eml file to extract & decode the Subject header.
.eml preview:
Drop an .eml file here to extract Subject header.

Email Subject Encoding Tool