uencoder

MIME Encoder

Encode text to MIME format (Base64 or Quoted-Printable) for email content. Free, private, and 100% client-side.

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How to use

  1. Type or paste text into the input box.
  2. Select Base64 or Quoted-Printable encoding.
  3. Copy the MIME-encoded result.

Frequently asked questions

What is MIME encoding?
MIME (Multipurpose Internet Mail Extensions) encoding converts non-ASCII text to ASCII-safe format for email transmission, using either Base64 or Quoted-Printable.
When to use Base64 vs Quoted-Printable?
Base64 is better for binary or mostly non-ASCII data. Quoted-Printable is better for mostly ASCII text with some non-ASCII characters, as it preserves readable ASCII.

Related tools

MIME Decoder Decode MIME-encoded text (Base64 or Quoted-Printable) back to original content. Free, private, and 100% client-side. Quoted-Printable Encoder Encode text to Quoted-Printable format (RFC 2045). Free, private, and 100% client-side. Base64 Encoder Encode text or binary data to Base64 online. Free, private, and 100% client-side.