Data Compression


Criteria

Survey Formats

Basics

Compression Methods

Data Formats

Files

BZIP2

GZIP

ZIP

Specification

Characteristics

Compression

File Structure

Security Features

Platforms

Applications

Audio Data

Image Data

Video Data


Glossary

Index


Download


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Specification of the ZIP File Format


The Specification of the ZIP file format is available to the public at the internet. It is supported by a large number of commercial applications and freeware projects (see Info-ZIP). As far as we know there is no limitation in using ZIP due to patent restrictions.


The ZIP format is specified in the "Application Notes" of PKWARE, Inc. While creating this article the current version of ZIP is:


File:    APPNOTE.TXT - .ZIP File Format Specification
Version: 6.2.0 - NOTIFICATION OF CHANGE
Revised: 04/26/2004
Copyright (c) 1989 - 2004
              PKWARE Inc., All Rights Reserved.

The same specification is published at info-zip, and even the most popular competitor WinZip is referring to this document.


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Info-ZIP []

ZIP ZIP ZIP General Characteristics