---
name: "MIME::Decoder::Base64"
section: "3pm"
platform: "linux"
package: "perl-mime-tools"
version: "5.518-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/MIME::Decoder::Base64"
---

# MIME::Decoder::Base64(3pm)

encode/decode a "base64" stream

## NAME

MIME::Decoder::Base64 - encode/decode a "base64" stream

## SYNOPSIS

A generic decoder object; see MIME::Decoder for usage.

## DESCRIPTION

A MIME::Decoder subclass for the `"base64"` encoding. The name was chosen to jibe with the pre-existing MIME::Base64 utility package, which this class actually uses to translate each chunk.

- •

  When **decoding**, the input is read one line at a time. The input accumulates in an internal buffer, which is decoded in multiple-of-4-sized chunks (plus a possible "leftover" input chunk, of course).

- •

  When **encoding**, the input is read 6840 (120 \* 57) bytes at a time. Each section of 57 bytes is encoded as a line containing 76 Base64 characters.

## SEE ALSO

MIME::Decoder

## AUTHOR

Eryq (*eryq@zeegee.com*), ZeeGee Software Inc (*http://www.zeegee.com*).

All rights reserved.  This program is free software; you can redistribute  it and/or modify it under the same terms as Perl itself.