RFC 2047 encoded-word
ClientEmail header encoding near quoted-printable cluster.
Build =?UTF-8?B?...?= MIME encoded-word headers.
About RFC 2047 encoded-word
Build =?UTF-8?B?...?= MIME encoded-word headers. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.
How to use this page
Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.
=?UTF-8?B?Q2Fmw6kgcsOpc3Vtw6k=?=
Common use cases
- RFC 2047 encoded-word for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
Quoted-printable encoder
ClientMIME quoted-printable for UTF-8—=XX escapes, soft line breaks at 76 chars; encode or decode locally.
Base64 & URL encoder
ClientUTF-8 Base64 encode/decode and URL component encode/decode in one workspace—paste, transform, copy.
Email normalizer
ClientNormalize email lists—trim, lowercase domains, optional dedupe—one address per line in your browser.
Encoding tools
ClientHub index: Base64 & URL, Base64url, Base32, Crockford, LEB128, ASCII85, Z85, Base58, base-36, bencode, Morse, quoted-printable, URI, Punycode/IDN, Unicode escapes, data URLs, MIME, hex, HTML entities, JWT, JSON helpers, crypto.