A Zip Compression ActiveX Component
for Visual Basic, ASP, Visual C++, Visual FoxPro, Delphi, and C++ Builder

Latest Version: v10.1.0

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Latest Zip Component Features

• Creating Self-Extracting EXEs Simplified How to create self-extracting EXE
• Open a Zip on the Web. Open and read or unzip the contents of a Zip file from a URL.
• Standard WinZip Password-Protection is Supported. Create or open/decrypt password-protected Zips.
• OpenFromMemory Allows you to open a Zip that is stored in your program's memory. This was created to allow programs to access Zips loaded from sources such as a database (an Oracle BLOB for example).
• Events Version 8.0 now includes a robust set of events that allow you to closely monitor the progress while zipping and unzipping.
• Abort Capability Using events, Version 8.0 has the ability to abort any zip or unzip operation while in progress.
• AES Encryption Encrypt your data using up to 256-bit AES encryption. Also supports Blowfish and Twofish encryption algorithms.
• Embed ZIPs into EXEs Embed ZIP files directly into EXEs, and access them from your program. The ZIP is embedded as a named resource, and any number of ZIPs can be embedded in a single EXE.
• Unzip Newer Unzips files based on last-modification time.
• Set Exclusions Exclude files matching wildcarded filenames, such as "*.log".

Existing Zip Component Features

• Create New ZIPs Create new ZIPs from existing files, memory data, or other existing ZIPs.
• Delete Files in ZIPs Remove specific files within a ZIP.
• ZIP Entire Directories Recursively descend directories to ZIP everything.
• Add Files to ZIPs Adds files to existing ZIPs.
• Merge ZIPs Merge any number of ZIPs into one ZIP.
• Unzip Unzip and auto-create directories as needed.
• Unzip Matching Unzip only files matching a wildcarded pattern.
• Access to Compressed Data Directly access the data in its compressed format.
• Memory Compression/Decompression Use ZIP compression without ever writing files.
• Memory-to-ZIP Conversion and Back Allows direct access to data within files in the ZIP.
• Full Control Over Comments Add comments to the ZIP, or to individual files within the ZIP.
• Works on Temporary ZIPs The ZIP is never touched until WriteZip is called.
• Progress Indicators Makes it easy to view the progress of zip and unzip operations.
• Get ZIP Directory as XML Great for reporting the contents of a ZIP.
• Inflate to String Makes it easy to access text data.
• Append/Replace Data In-Place Modify the contents of a file within the ZIP in-place.

The Chilkat Zip Component is an easy to use, high-performance ActiveX component that provides your applications with the ability to create and manipulate Zip archives.  It provides easy access to the decompressed contents of the individual files stored within a Zip archive.  It also allows you to easily compress directly from memory buffers or strings, as well as add multiple files with wildcarding and recursing directories.

All Chilkat component licenses allow for royalty-free distribution of the control with your application. Upgrading from previous versions is FREE. Your existing registration code will work with the latest version.

• Royalty free licensing. (All Chilkat components are royalty free)
• Incorporates ChilkatLog as the standard error reporting and retrieval mechanism. The ChilkatLog component provides powerful debugging information for resolving problems. This information is invaluable especially when errors can arise from external sources such as networks and filesystems.
• Progress monitoring events allow for zip and unzip operations to be monitored in real time. (See the example programs).
• Get the Zip archive's directory in XML format.
• Search for a file within the Zip using a wildcarded string.
• Unzip a file into a specific directory, regardless of the directory information stored within the Zip archive.
• Chilkat's Streaming Technology is used to allow any size file to be compressed or decompressed in a constant memory footprint. Even files that are Gigabytes in size can be compressed/decompressed.
• Extract individual files, or files matching a pattern.
• New property for specifying the temporary directory used when unzipping.
• Version property to make it easy for applications to see which version is installed.
• High-performance C++ ActiveX written with ATL 3.0.
• Supports Active Server Pages, Visual Basic, Visual C++, Delphi, C++ Builder, and all languages that use ActiveX controls.
• Fast compression with low memory usage. Includes optimized Pentium assembly code for high-performance.
• Completely compatible with the existing PKZip 2.04g format.
• Zip files created by this component can be used by any existing application that read Zip files.
• Unzip directly to memory or a string.
• C++ wrapper library for easy access to automation-compatible types required by ActiveX control.
• Add, delete, or modify entries within a Zip file.
• Add files to a Zip using wildcarding and recursing directory trees.
• Complete control over the compression algorithm.
• Easily step through each file in the Zip and access the file attributes, compression ratios, etc.
• Create new Zip entries directly from memory.
• Extract from a Zip to the filesystem.
• Online documentation and excellent support.

Zip Compression Resources
WinZip
PKWARE
Data Compression