Q: What are archives and all these Zip files suppose to be ?

A: An archive is typically a group of files stored in a single file in compressed form. There are many different formats for archives. They are all similar in terms of functionality, with the main difference being the compression method being used. You can identify the different archive formats of a particular archive by looking at the filename extension (the letters after the last dot, e.g. “.zip”).

Archive formats supported by PicoZip

PicoZip can create archives in 8 different formats:

  • .bh : BlakHole archive
  • .cab : Microsoft Cabinet
  • .gz : GZip archive*
  • .jar : Javasoft archive
  • .lha : Lha archive
  • .lzh : Lzh archive
  • .tar : Unix tape archive
  • .zip : Zip archive

* Please note that the GZip archive format can only store a SINGLE file. This is a limitation of the GZip format, not PicoZip.

In addition, PicoZip can extract files from 15 different archive formats:

  • .ace : Ace archive
  • .arc : Arc archive
  • .arj : Arj archive
  • .bh : BlakHole archive
  • .cab : Microsoft Cabinet
  • .gz : Unix GZip (gz/tar)
  • .jar : Javasoft archive
  • .lha : Lha archive
  • .lzh : Lzh archive
  • .rar : Rar archive
  • .tar : Unix tape archive
  • .tgz : Unix Tar/GZ archives
  • .z : Unix Compress archives
  • .zip : Zip archive
  • .zoo : Zoo archive

Please note that the above archive formats are natively supported by PicoZip, no third party software is required.

Self-extracting (SFX) archives

A self-extracting archive is an archive that is created as an executable (.exe) file, and has the ability to extract the files from within itself without the use of any third party archive utility. PicoZip can create self-extracting archives in 8 different formats. Click here to learn more.

Benefits of using archives

  • Save hard disk space. You may have many rarely used files in your hard disk which takes up a lot of space. By compressing them into an archive, you can save up to over 80% in hard disk space.
  • Save time and money. Compressing large files into an archive before sending it over the Internet saves you a lot of time and money, especially if you are using a slow connection (e.g. 56k modem).
  • Simplify backup management. If you need to backup a set of files often, storing them in archives means you only need to manage one file for each backup, rather than making copies of entire folders.

Here is the place to look for answers to frequently asked questions. If you cannot find an answer to your question from this FAQ, just enter your question below and submit it. Our support staff will answer your question within one working day. Alternatively, you can email your question to support@picozip.com.

You should also check out our Visual Guide over here for an illustrated tutorial to common operations carried out in PicoZip.

Question 1 – What are archives and all these Zip files suppose to be ?

Q: I am new to computers. What are archives and Zip files supposed to be and how does it help me ?

A: Please click here for a full explanation.

Question 2 – Are there any issues running PicoZip on Windows 95 ?

Q: I am still using Windows 95/98. Are there any issues that I should be aware of ?

A: PicoZip requires newer versions of some system files that came with Windows 95/98. These system files may have been updated if you installed newer versions of some software such as Microsoft Internet Explorer 5.0, etc. If you install PicoZip and it does not work properly, please see Questions 3, 4 and 5. Note that this does not affect later versions of Windows such as Windows 98, Windows ME, WindowsXP, etc.

Question 3 – Why do I get the error “Missing Export OLEAUT32.DLL” ?

Q: When I start PicoZip, I get the error message “The PICOZIP.EXE linked to missing export OLEAUT32.DLL”. What do I do ?

A: PicoZip cannot run on the original version of Windows 95/98 due to lack of support for certain API functions in the old version of “Oleaut32.dll” that came with Windows 95/98. To resolve this problem, you need to download and install this file.

Question 4 – Why does my toolbar buttons have missing images ?

Q: Some of my PicoZip toolbar buttons are missing the images and “flat” button style do not work. What’s wrong ?

A: The “Comctl32.dll” that comes with your Windows 95 is an old version. PicoZip requires a newer version of “Comctl32.dll”. To resolve this problem, you need to download and install this file.

Question 5 – Why do I get the error “Error on loading Winsock 2 library … ” ?

Q: When I try to check for new version using the “Help > Check for New Version” command, I get the error message “Error on loading Winsock 2 library (WS2_32.dll) … “. What do I do ?

A: You need to update to Windows Socket 2 to resolve this problem. Download and install this file

Question 6 – Why is my registration code expired ?

Q: I tried to register my copy of PicoZip, but it tells me that my registration code has expired. Why is that ?

A: The registration code provided to registered users comes with a 30 day expiry. You should install and register your copy of PicoZip within 30 days of receiving your registration code. If you need to install/upgrade PicoZip after your registration code has expired, you can get a new registration code for FREE by filling in this form. UPDATE: PicoZip 2.1 and above no longer expire registration codes. We highly recommend that you upgrade.

Question 7 – How do I enter my PicoZip registration code ?

Q: I just received my PicoZip registration code. How do I enter this registration code to register my copy of PicoZip ?

A: Start PicoZip, then choose “Enter Registration Code” from the “Help” menu. The “Register PicoZip” dialog box will be shown. Now, key in the Name and Registration Code EXACTLY as shown in the instructions you received when you registered PicoZip, then click the “Register” button. Please note that the Name is case-sensitive, and you may NOT use a different name or spelling. In order to prevent typing errors, it is recommended that you cut-and-paste the registration information rather than type it. For a step-by-step illustrated guide on how to enter your registration code, please click here.

Question 8 – Why do some files (like GIF/JPG) compress so little ?

Q: I tried compressing some GIF and JPG files, but their compressed size is not much smaller than its original size. Why is that ?

A: File formats like GIF and JPG are already compressed in their original form. That is why you cannot compress it much more using any archive utility.

Question 9 – The self-extracting ACE archive I created does not work. What is wrong ?

Q: I created a self-extracting archive from an ACE archive. When I run it, the error message “Unknown Error” is shown. What is wrong ?

A: PicoZip version 2.01 or earlier does not support creating self-extracting executables from ACE archives created using version 2.x of WinACE. Please upgrade to the latest version of PicoZip to get this support.

Question 10 – Why does PicoZip’s icon look weird in Windows 95 ?

Q: I installed PicoZip in Windows 95 and noticed PicoZip’s icons/shortcuts seem to be “discolored”. How do I fix this ?

A: Windows 95 by default only supports 16 color icons. PicoZip’s icons uses 256 colors, so when it is displayed in Windows 95, it looks rather ugly. You can fix this by making some changes to the Windows registry. Please note that you should NOT do this unless know exactly what you are doing. Here are the steps:

Run “Registry Editor” by selecting “Start -> Run”, then enter “regedit” and click OK.
Go to “HKEY_LOCAL_MACHINE\Config\0001\Display\Settings”.
Look for “BitsPerPixel” and note down the number (probably 16, 24 or 32).
Now, go to “HKEY_USERS\.Default\Control Panel\Desktop\WindowMetrics”.
Add a string value “Shell Icon BPP” and give it the same value you note down in Step 3. Note: If there is no “WindowMetrics” key, just add it, then add the “Shell Icon BPP” string value.
Restart Windows.

Question 11 – Which archive formats does PicoZip support ?

Q: Which archive formats does PicoZip support ?

A: PicoZip can create archives in 7 different formats (BH, CAB, JAR, LHA, LZH, TAR, ZIP) and extract files from 15 different archive formats (ACE, ARC, ARJ, BH, CAB, GZ, JAR, LHA, LZH, RAR, TAR, TGZ, Z, ZIP, ZOO). PicoZip can also create self-extracting archives in 8 different formats (ACE, ARJ, BH, JAR, LHA, LZH, RAR, ZIP). In addition, PicoZip also supports UUencode and XXencode.

Question 12 – How do I get rid of the confirmation dialog ?

Q: How can I disable or turn-off the confirmation dialog box shown after creating an archive or extracting from an archive ?

A: The confirmation dialog box cannot be disabled in the PicoZip versions prior to 2.02. If you are using PicoZip 2.01 or earlier, please upgrade to the latest version of PicoZip. You can then disable the confirmation dialogs by running PicoZip, then select “Configuration” from the “Options” menu. In the Configuration dialog box, choose the “Miscellaneous” tab. Now, uncheck the following options: “Show confirmation after compress” and “Show confirmation after decompress”. Click the “OK” button to save the changes.

Question 13 – How do I compress all files in a folder and its subfolders ?

Q: I would like to compress all files in a folder and its sufolders so that I can extract and restore the entire folder structure somewhere else. How do I do that ?

A: Please take a look at this step-by-step tutorial.

Question 14 – How do I restore CAB and ZIP file support in WindowsXP?

Q: I am using WindowsXP. I have uninstalled PicoZip, but how do I restore the original CAB and ZIP file support that was provided by WindowsXP that allows you to access ZIP and CAB files as folders ?

A: To restore CAB file support, download this file and save it on your computer. After that, right-click it, then select “Merge” from the context menu. Click “Yes” when asked for confirmation. If you want to restore ZIP file support as well, download this file, and repeat the same steps. Now, restart your computer. UPDATE: This problem has been fixed in PicoZip 2.1 and above.

Question 15 – How do I run Backup Sets from the command line ?

Q: I have created some Backup Sets in PicoZip and I would like to know how to run them from the command line. Can this be done ?

A: Yes, it is now possible to run Backups Sets from the command line (since verson 2.3).

PicoZip 2.7 and above: Just go to “Tools -> Manage Backups”. Click on the required backup set, then right click it. In the popup menu, select “Copy Command-line to Clipboard”. You can now paste the command-line to run this backup set anywhere you wish.

PicoZip 2.3-2.6: Just go to “Tools -> Manage Backups”. Click on the required backup set, then right click it. In the popup menu, select “Create Shortcut On Desktop”. Now, right click the Backup Set shortcut that you have just created, and select “Properties” from the popup menu. In the Properties dialog box, the “Target” field contains the complete command-line to execute that backup.

It should look something like this:
C:\Program Files\PicoZip\PicoZip.exe -BC “C:\Program Files\PicoZip\Backups\BakSet.zfb”

The “-BC” parameter will show a confirmation dialog after completing the backup process. If you don’t want any confirmations, use “-B” instead.

Question 16 – How do I schedule backups to run automatically ?

Q: I have created some Backup Sets in PicoZip and I would schedule these backups using Window’s built-in scheduler. How do I do this ?

A: Please take a look at this step-by-step tutorial.

Question 17 – Is there a command line version of PicoZip ?

Q: I would like to use PicoZip from the command line in my batch files. Does PicoZip come with a command line version ?

A: PicoZip does not currently come with a command line version. We are however planning to add a command line version in the near future.

Question 18 – I lost my PicoZip registration code. How do I get a new one ?

Q: My computer crashed, and I had to reformat my hard disk. I want to reinstall PicoZip, but I don’t have the registration code anymore. Can you send me a new one ?

A: Yes, we can send you a new registration code. All you have to do is fill in a simple form over here. If you lost your Invoice number, we will need you to provide us with your email address.

NOTE: While this site hosts information about Picozip file compression utility, we do not own the software anymore or provide any support for it. 

The following links contained the latest versions of Picozip file compression software that were released:

Acubix PicoZip

PicoZip Password Recovery Tool

You can check the changelog for change details.

Installation Instructions

After downloading the above PicoZipSetup.exe, double click on it to start the setup. Follow the instructions on screen to complete the setup. IMPORTANT NOTE: Windows 95 users, please read the FAQ or the README file included with PicoZip.

Uninstall Instructions

In order to uninstall PicoZip, open up your Windows Control Panel (Start Menu > Settings > Control Panel), and double click on “Add or Remove Programs”. In the “Add or Remove Programs” dialog box, choose PicoZip from the list, then click the “Add/Remove” button. Follow the on screen instruction to complete the uninstall.

Upgrade Instructions

You can just install over your previous installation folder. All your settings will be preserved. Important ! Please RUN PicoZip at least once after installing before doing anything else, because it needs to update some registry settings in order for PicoZip to work properly.

Release 4.01 – September 27, 2005

  • Bug Fix Fixed an issue with non-password protected backups. If you created a non-password protected backup using PicoZip 4.0, it would still be encrypted.

Release 4.0 – September 19, 2005

  • Added Feature Added feature to create a new archive and burn to CD/DVD
  • Added Feature Added feature to burn an existing archive to CD/DVD
  • Added Feature Added feature to edit the properties of files within an archive without having to decompress and recompress the archive.
  • Added Feature Added integrated FTP support to upload archives from within PicoZip and from Windows Explorer shell integration
  • Added Feature Added “Update and Add” files option for adding files to an existing archive
  • Added Feature Added option to include empty subfolders when creating archives
  • Added Feature Added feature to merge multi-volume ZIP archives
  • Added Feature Added feature to export PicoZip backup sets directly to PicoBackup
  • Added Feature Added improved support for antivirus software
  • Bug Fix Fixed some issues related to large ZIP file support
  • Bug Fix Fixed password support in backups
  • Bug Fix Fixed many other minor issues.

Release 3.01 – September 10, 2004

  • Added Feature Added extra security warnings when opening unsafe file types in archives.
  • Added Feature Added feature to create a desktop shortcut to an archive file.
    Bug Fix Fixed an issue with adding many files to batch operations and backup sets in some older versions of Windows.
  • Bug Fix Fixed some other minor issues.

Release 3.0 – July 15, 2004

  • Added Feature Added Windows XP Theme support.
  • Added Feature Added support for toolbar skins that can be used to customize the look of the toolbar.
  • Added Feature Added the ability to re-arrange the order of the buttons on the toolbar.
  • Added Feature Added support for WinZip compatible AES encryption of ZIP files.
  • Added Feature Added Split feature for splitting Zip files (WinZip compatible).
  • Added Feature Added support for .WAR and .MIM file formats.
  • Added Feature Added Base64 encoding/decoding.
  • Added Feature Added Batch Delete from Archive feature.
  • Added Feature Added more command buttons that can be placed on the toolbar.
  • Added Feature Added ability to auto-update archive when files being viewed is modified.
  • Added Feature Different archive types are now displayed with different icons in Windows Explorer for easy identification.
  • Changed Improved the speed of opening extremely large archive files.
  • Bug Fix Fixed some issues with archives that spanned disks.
  • Bug Fix Added workaround for Windows 2000 bug that causes Windows Explorer to hang.
  • Bug Fix Fixed many other minor issues.

Release 2.8 – March 27, 2003

  • Added Feature Added support for ZIP files larger than 4GB.
  • Added Feature Added support to extract from multi-volume ZIP files.
  • Changed Optimized PicoZip to speed up loading of archives that contains a lot of files.
  • Bug Fix Fixed an issue with the “Copy Command-line to Clipboard” command in Backup.
  • Bug Fix Fixed several bugs related to compressing to floppy disk and disk spanning.
  • Bug Fix Fixed a bug where files with filenames starting with a period is not added to an archive.

Release 2.7 – February 25, 2003

  • Added Feature Added new context menu item “Compress and Email …” that allows you to create and email archives, with the ability to set the archive settings like filename, password, archive format, etc.
  • Added Feature Added many new enhancements to the backup feature, including:
    (a) Options to show/hide confirmations after backup.
    (b) Added incremental backup method.
    (c) Can password protect backups.
    (d) Can backup folders while exluding subfolders.
    (e) Can specify files and/or file masks to exlude from backup.
    (f) Options to skip read-only files, hidden files and system files.
    (g) The Manage Backup dialog box automatically save and restore its height.
  • Added Feature Added “Copy Command-line to Clipboard” command to the context menu when you right-click a Backup Set in the “Manage Backups” dialog box. This command will copy the command-line to run the selected Backup Set to the clipboard.
  • Added Feature Added new configuration setting to allow you to set the temporary folder that will be used by PicoZip when creating archives. This setting can be configured under “Options -> Configuration -> Folders”.
  • Changed The Extract Dialog Box has been made resizeable to make it easier to select the target extract folder.
  • Bug Fix Fixed a bug in the archive explorer folder tree view that renders the tree view incorrectly when there are folders and subfolders with the same name.
  • Bug Fix Fixed a bug that causes the files list to be refreshed once when opening an archive file.

Release 2.6 – February 12, 2003

  • Added Feature Added folder tree view for files in an archive. You can now view files in any folder within an archive by selecting the folder. New configuration settings are available to configure the behaviour of this new feature.
  • Added Feature Added the “Drop Add Options” dialog that is shown when you drag-and-drop files on an archive or on PicoZip main window while an archive is open. This dialog allows you to set some add options before the dropped files are added.
  • Changed The Add dialog box now shows the ‘*.*’ wildcard for file name by default.
  • Changed PicoZip installer will now ask you where you would like PicoZip shortcuts to be created, rather than automatically creating shortcuts on the
  • Desktop and Start Menu by default.
  • Bug Fix Fixed a bug in the Text and HTML file list export feature, where the column headers “Packed” and “Unpacked” was switched by mistake.
  • Bug Fix Fixed a bug that causes an error message when starting PicoZip if you enabled the “Always have PicoZip window stay on top” setting.
  • Bug Fix Fixed bug that causes error when installing PicoZip in Windows NT/2000/XP where user is logged on as member of Admin group.
  • Bug Fix Fixed an issue with the installer when upgrading, where the previous version is left behind in the “Add/Remove Programs” list. This version will automatically remove any previous version of PicoZip from the “Add/Remove Programs” list.

Release 2.5 – January 15, 2003

  • Added Feature Added integration with PicoZip Recovery Tool, our free Zip password recovery utility. If you have PicoZip Recovery Tool installed, PicoZip will automatically add “Recover ZIP Password” command to the “Tools” menu.
  • Added Feature Added a “Open in Windows Explorer after extracting” option in “Extract” dialog box. If selected, PicoZip will automatically open the target folder in a Windows Explorer window after extracting it.
  • Added Feature Added “Restore folders” and “Confirm file overwrites” option to the Batch Extract feature.
  • Added Feature Added configuration setting in Folder tab to use default system folder when opening archives.
  • Added Feature Added configuration setting in Folder tab to use the same folder as currently open archive when adding files.
  • Added Feature The column and order of sorting is now automatically saved and these same settings are used the next time you open PicoZip. If you prefer the old method where sorting is always reset to the first column, you can set the “Always reset sorting to first column” option under the “View” tab in the Configuration screen.
  • Added Feature Added configuration setting in “Shell Extensions” tab to allow you to set the default compression level you want to use for shell extensions commands.
  • Changed When dragging-and-dropping files onto an empty PicoZip window, the “Add Options” dialog box will default to the same folder as the files that were dropped.
  • Changed Deleting files in an archive will no longer refresh the entire file list causing the current position in the list to be lost. This speeds up the delete operation and you do not need to manually scroll back to the position in the list where you deleted file(s).
  • Changed Modified the Batch Extract feature to use the “Extract Folder” settings (that you configure in Options -> Configuration) by default.
  • Changed Modified the “Virus Scan” command so that it displays the Configuration screen automatically if you choose this command without configuring a virus scanner first.
  • Changed Removed the “Light” compression level from the “Edit Backup Set”.
  • Bug Fix Extracting a tar.gz archive will now extract the nested tar file properly, restoring its stored folders.
  • Bug Fix Fixed issue with the “Add Files” dialog in Batch features to overcome a Windows limitation so that you can now add as many files as you in a single add operation.
  • Bug Fix Fixed the Edit Backup Set dialog box problem where the dialog box is partly truncated when displayed on some computers with certain display settings.
  • Bug Fix Removed the “Freshen existing files” option in the Add dialog when creating a new file.
  • Bug Fix Fixed the bug in the built-in explorer, where under certain conditions, may display system folders in addition to archive files.

Release 2.3 – December 9, 2002

  • Added Feature Added PicoZip Tray Tool. This is a separate program that places an icon in your Windows tray area on the Task Bar. This icon provides quick access to recently opened archives, quick backups and other PicoZip features.
  • Added Feature Added Find and Find Next feature that allows you to search for files within an archive that matches the search criteria you set. You can search based on filename (including wildcards), date range or size range.
  • Added Feature Added new configuration settings to allow you to configure the font to use for the file list view. New settings were also added for configuring the new tray tool.
  • Changed Modified the “Edit Backup Set” dialog box to make it resizeable, and also to show a horizontal scrollbar if items in the “Files to Add” listbox is longer than the width of the listbox.

Release 2.2 – November 29, 2002

  • Added Feature Added new shell extensions. When you use the right mouse button to drag and drop one or more archives to any folder, the popup context menu gives you the following options: (a) Extract to the folder where you dropped the archive (b) Extract to a subfolder under the folder where you dropped the archive (c) Display a dialog box to allow you to customize the extraction parameters and destination.
  • Bug Fix Fixed a bug that causes an error when you try to execute a Backup Set that contains files from more than one drive/partition and was set to store relative path.
  • Bug Fix Fixed a bug in the archive file format conversion feature, where the source file is not deleted even though the option to do that was checked.
  • Bug Fix Fixed a bug in the batch features, where you need to press the “Next” button twice in the “Select Output Folder” page if a custom output folder is selected.

Release 2.12 – November 18, 2002

  • Added Feature Added new feature for viewing files within archive, where the user can configure an external viewer and set PicoZip to (a) Always use associated program (b) Always use the external viewer (c) Use external viewer only if there is no associated program (d) Ask user
  • Added Feature Added new context menu items to allow a user to extract multiple archives to the current folder or to a user selected folder. User can also extract the archives to separate subfolders within the target folder.
  • Added Feature Added feature to create shortcut to Backup Sets on desktop. Double-clicking on these shortcuts will run the backup immediately without needing to start PicoZip first.
  • Changed Modified the “Batch Extract” feature to allow user to specify whether to extract to separate subfolders.
  • Bug Fix Fixed bug where the built-in explorer did not restore its previous state when PicoZip is started.
  • Bug Fix Fixed issues related to running PicoZip on multi-user Windows NT/2000/XP.

Release 2.1 – November 8, 2002

  • Added Feature Added the ability to automatically save existing archive file associations before making any changes to associate it to PicoZip, and PicoZip will automatically restore these associations if you choose not to associate it to PicoZip.
  • Added Feature Added the ability to restore the native CAB and ZIP support in WindowsXP if you uninstall PicoZip. Note that you need to reboot after uninstalling to complete the restoration.
  • Changed Expiry of registration key has been removed.
  • Bug Fix Fixed the filter bug which causes the whole archive to be deleted if a filter is active, all currently shown files are deleted and there are files which did not meet the filter criteria.
  • Bug Fix Fixed the PicoZip main window restore bug. This bug causes PicoZip main window to be not maximized when you run PicoZip, even though you had it maximized the last time you use it. A side effect from this bug also causes the “grab tool” on the lower right corner of the PicoZip main window to be unusable when in this state.
  • Bug Fix Fixed an issue with the Properties dialog box, where the archive information is not correctly shown if you apply a filter to the archive that hides some file(s).
  • Bug Fix Fixed a bug in the InfoTip shell extension, where the archive information is not correctly shown when you place your mouse cursor over some Zip files in Windows Explorer.
  • Bug Fix FixedFixed a bug in the Backup feature where backups cannot be performed if you try to make a backup that contains a single folder which contains only subfolder(s) that may contain files/folders.

Release 2.02 – June 26, 2002

  • Added Feature Added configuration settings to enable/disable the compress/decompress confirmation dialogs.
  • Added Feature Added new context menu item to allow extracting multiple archive files in a single operation from within Windows Explorer.
  • Added Feature Improved support for self-extracting archives created by other compression utilities.
  • Changed Changed the expiry time limit of registration keys to 30 days instead of 14 days.
  • Bug Fix Fixed the ACE self-extracting archive to support ACE 2.* archives.
  • Bug Fix Fixed bug when extracting RAR multi-volume archive with more than 9 volumes.
  • Bug Fix Fixed bug where the file extraction progress for ACE archives were not updated.

Release 2.01 – May 29, 2002

  • Bug Fix Fixed built-in explorer bug when viewing an archive located in the root folder of a drive.

Release 2.0 – May 11, 2002 (Major Release)

The following awards were given to PicoZip by independent reviewers. In each case, PicoZip was awarded their highest rating, in recognition of the quality and ease of use of PicoZip:

  • Tucows awarded PicoZip their highest rating of five cows. To learn how Tucows rate programs, click here.
  • CNet Download.com awarded PicoZip their highest rating of five stars .
  • PicoZip was selected as the Microsoft and WUGNET Shareware Pick of the Week for July 21, 2002. About this award: “Each week Microsoft and WUGNET feature a Windows XP/Me/98 shareware application demonstrating the very highest programming standards possible today. Each application selected for this award is exhaustively reviewed under all operating situations and of the applications submitted, less than two percent make the cut. It is our intent to showcase only the very “best-of-the-best” applications.”
  • Snapfiles.com (formerly WebAttack.com) awarded PicoZip their highest rating of five stars.
  • SoftwareSeeker.com awarded PicoZip Editor’s Pick award, which is their highest recognition.
  • PicoZip was selected for Dr. File Finder’s Picks.
  • PicoZip was awarded Paul’s Picks Five Star Award.
  • GlobalShareware.com awarded PicoZip their highest rating of five stars.
  • TopShareware.com awarded PicoZip their highest rating of five stars.
  • SuperFiles.com awarded PicoZip their highest rating of five files and selected PicoZip as the “SuperFile of the Week”.
  • Softchecker.com awarded PicoZip their Editor’s Choice award.
  • SoftwareTransit.com awarded PicoZip their Best of Class Editor’s Pick award.
  • FileHungry.com awarded PicoZip five stars.
  • BrotherSoft.com awarded PicoZip five stars.
  • ListSoft.com awarded PicoZip their COOL award, and users at ListSoft gave us the highest ratings.
  • SoftLandMark.com awarded PicoZip Editor’s Choice Five Star award.
  • Shareup.com awarded PicoZip five stars.
  • SoftNews.ro awarded PicoZip five stars.
  • Softpile.com awarded PicoZip with The Most Popular award.
  • Dave’s Pick PicoZip was selected as Dave’s Pick at DaveCentral.com
  • aFreeGo.com awarded PicoZip their highest rating of five.
  • DownloadPro.de awarded PicoZip five stars.
  • Softdeko.com awarded PicoZip their highest rating of five dragons.
  • FileTransit.com awarded PicoZip five stars.
  • Softlist.net awarded PicoZip five stars.
  • YourSWS.com awarded PicoZip five stars.
  • SofoTex.com awarded PicoZip five stars.
  • MostShareware.com awarded PicoZip five stars.
  • Soft32.com awarded PicoZip five stars.
  • Softforall.com awarded PicoZip five stars.
  • PopularShareware.com awarded PicoZip five stars.
  • Softizer.com awarded PicoZip their five star cool award.
  • Download3000.com awarded PicoZip five stars.
  • Download2you.com awarded PicoZip five stars.
  • SwiftDownloads.com awarded PicoZip five stars.
  • SharewareConnection.com awarded PicoZip five stars.
  • SharewareJunction.com voted PicoZip.com as the Shareware Site of the Day.

Read more about Picozip:

Features | PressReviews

Zip Unzip Compression home

Acubix PicoZip Command Line Tool consist of two executable files: PZZIP.exe and PZUNZIP.exe. Please see below for information on how to use PZZIP and PZUNZIP.

PZZIP

PZZIP is the command used for operations related to creating or modifying an archive file. Supported archive formats are: .BH, .CAB, .JAR, .LHA, .LZH, .TAR, .ZIP

Usage:

pzzip [options] archivefilename [@sourcefilelist] [sourcefiles…]

If no extension is specified for archivefilename, PZZIP will default to creating a ZIP file. To create archive files in other formats, just specify the archivefilename with the required file extension.

pzzip test.cab *.*
This example will compress all the files in the current folder to a CAB archive named test.cab.

Options in square brackets “[ ]” are optional, while those in angle brackets “< >” are required. Wildcard characters “*” and “?” can be used in sourcefile names.

pzzip test.zip *.doc
This example will Zip all .doc files to test.zip.

To Zip several specific files to a Zip file, the source file names should be separated using a semicolon.

pzzip test.zip one.doc;two.doc;three.doc
This example will Zip three documents, one.doc, two.doc and three.doc in the current folder to test.zip.

Instead of specifying the file names on the command-line, you can also use a text file containing the source file names. The text file should contain one filename on each line.

For example, our text file “source.txt” looks like:

one.doc
two.doc
three.doc

pzzip test.zip @source.txt
This example will Zip one.doc, two.doc and three.doc from the current folder to test.zip.

Available options

-a Add files to the archive. (Default option)

pzzip -a test.zip *.doc
This example compresses all the .doc files in the current folder to test.zip.

-b<path> Specify a temporary folder that PicoZip will use when performing archiving operations. This is useful when the drive where your Windows temporary folder is located does not have sufficient space.

pzzip -bd:\temp test.zip *.doc
This example Zips all the .doc files in the current folder to test.zip while using “d:\temp” as the temporary folder.

-d Delete files from the archive.

pzzip -d test.zip *.txt
This example deletes all .txt files from the test.zip archive file.

-e<x|n|f|0> Set the compression level: -ex = Max, -en = Normal, -ef = Min, -e0 = Stored

pzzip -ex test.zip *.doc
This example Zips all the .doc files in the current folder to test.zip using maximum compression.

-f Freshen: Update only existing files in the archive with newer versions on disk

pzzip -f test.zip *.doc
This example replaces all .doc files in the zip file with newer files of the same name in the current folder.

-h or -? Show this help file.
-m Move: Move files to the archive. The source files will be deleted after archiving operation is completed.

pzzip -m test.zip *.doc
This example Zips all the .doc files in the current folder to test.zip, then deletes all .doc files in the current folder.

-p Store relative path (Default Option): Stores the names of subfolders for files added to the archive when -r recurse option is used. Here is a sample list of files and folders:

C:\Sub1\one.doc
C:\Sub1\Sub2\two.doc
C:\Sub1\Sub3\three.doc

pzzip -p -r test.zip C:\Sub1\*.doc
This example Zips all the .doc files in C:\Sub1 folder to test.zip archive file. The test.zip archive file will look like:

one.doc
Sub2\two.doc
Sub3\three.doc

-P Store full path: Stores the names of all folders and subfolders for files added to the archive when -r recurse option is used.Here is a sample list of files and folders:

C:\Sub1\one.doc
C:\Sub1\Sub2\two.doc
C:\Sub1\Sub3\three.doc

pzzip -P -r test.zip C:\Sub1\*.doc
This example Zips all the .doc files in C:\Sub1 folder to test.zip archive file. The test.zip archive will look like:

Sub1\one.doc
Sub1\Sub2\two.doc
Sub1\Sub3\three.doc

-r Recurse into subfolders. Can be combined with -p|-P option to become -rp|-rP. See examples in -p|-P options above.
-s<password> Specify a password to protect your archive. Zip 2.0 encryption method is used by default. If you wish to use AES encryption, please see the -yc option below.

pzzip -spasswd -a test.zip *.doc
This example Zips all the .doc files in the current folder to test.zip and password protect it using “passwd” as the password.

-u Update: Update existing files in the archive with newer versions on disk and adds any new files not already in the archive

pzzip -u test.zip *.doc
This example replaces all .doc files in the Zip file with newer files of the same name in the current folder and add any new .doc files that are not already in test.zip.

-v[m] Show archive file contents. -vm=pause after each screen

pzzip -vm test.zip
This example displays the list of files in test.zip and their information without extracting it, and it pauses after each screen.

-x<filenames> Exclude specified files from the archiving process. You can specify more than one file by separating filenames using a semicolon. Wildcard operators like * or ? can also be used.

pzzip -x*.txt;*.jpg test.zip *.*
This example will Zip all files in the current folder to test.zip except for files with .txt or .jpg extension.

pzzip -xBackup2005.db test.zip *.db
This example will Zip all .db files in the current folder to test.zip except for Backup2005.db.

-x@<filelist> Same as -x option above, but takes in the list of files to exclude from a text file instead. The text file should contain one filename on each line. For example, our exclude.txt file looks like:

*.txt
*.jpg
Backup2005.db

pzzip -x@exclude.txt test.zip *.*
This example will Zip all the files in the current folder to test.zip except for files listed in exclude.txt file.

-yc
[AES|
AES128|
AES256]
Set to use AES encryption method. By default, when you use the -s option to set a password, Zip 2.0 encryption method is used. Options: -yc, -ycAES & -ycAES128 = AES128, -ycAES256 = AES256.

pzzip -spasswd -ycAES256 -a test.zip *.doc
This example will Zip all the .doc files in the current folder to test.zip using AES 256 encryption and password protect it using “passwd” as the password.

More Examples

pzzip test.zip
This example will Zip up all the files in the current folder to test.zip, which is also in the current folder.

pzzip D:\Test\test.cab *.*
This example compresses all the files in the current folder to test.cab which is located in D:\Test\ folder.

pzzip test.zip *.doc
This example compresses all files in the current folder with .doc extension to test.zip.

pzzip test.zip one.doc;two.doc;three.doc
This example compresses one.doc, two.doc and three.doc in current folder to test.zip.

pzzip -xbackup.doc test.zip *.doc
This example compresses all .doc files in current folder to test.zip, except for backup.doc.

pzzip -rp test.zip *.*
This example compresses all files in the current folder and all its subfolders to test.zip with relative path information stored in the archive.

pzzip -v test.zip
This example displays the contents of test.zip on screen.

PZUNZIP

PZUNZIP is the command used for operations related to extracting the contents from an archive file. Supported archive formats are: .ACE, .ARC, .ARJ, .BH, .CAB, .GZ, .JAR, .LHA, .LZH, .RAR, .TAR, .TGZ, .Z, .ZIP, .ZOO.

Usage:

pzunzip [options] archivefilename [full extract path] [@filelist] [files…]

Options in square brackets “[ ]” are optional, while those in angle brackets “< >” are required. Wildcard characters “*” and “?” can be used in the file names.

pzunzip test.zip *.doc
This example will unzip all files in test.zip with .doc extension to the current folder.

To extract several specific files from an archive, file names should be separated using a semicolon.

pzunzip test.zip one.doc;two.doc;three.doc
This example will unzip three files, one.doc, two.doc and three.doc from test.zip to the current folder.

Instead of specifying the file names on the command-line, you can also use a text file containing the file names. The text file should contain one filename on each line.

For example, our text file “list.txt” looks like:

one.doc
two.doc
three.doc

pzunzip test.zip @list.txt
This example will unzip three files, one.doc, two.doc and three.doc from test.zip, same as the previous example.

Available options:

-d Restore the folder structure stored in the archive when extracting.

pzunzip -d test.zip d:\target
This example unzips all the files in test.zip to d:\target while recreating any folder structure stored within the archive.

-e Extract file from archive (Default Option)

pzunzip -e test.zip d:\target
This example unzips all the files in test.zip to D:\target.

-h or -? Show this help file.
-o[-] Use this -o option to automatically overwrite existing files in destination folder without prompting for confirmation if the file extracted from the archive has the same filename. Using -o- does the opposite and skips extraction of any file from the archive whenever a file with the same already exist in destination folder.

pzunzip -o test.zip d:\target
This example unzips all the files in test.zip to d:\target while automatically overwriting any files with the same file name in d:\target.

pzunzip -o- test.zip d:\target
This example unzips all the files in test.zip to d:\target while automatically skipping extraction of files with filenames matching any file in d:\target.

-s Specify the password to use for extracting the contents of an encrypted archive file.
-t Test the integrity of an archive file.

pzunzip -t test.zip
This example will run a test on test.zip file for errors.

-v[m] Show archive file contents. -vm = pause after each screen

pzunzip -vm test.zip
This example displays the list of files in test.zip and their information without extracting it, and it pauses after each screen.

-x<filenames> Exclude specified files from being extracted. You can specify more than one file by separating filenames using a semicolon. Wildcard operators like * or ? can also be used.

pzunzip -x*.txt;*.jpg test.zip
This example will unzip all files in test.zip to the current folder except for files with .txt or .jpg extension.

pzunzip -xBackup2005.db test.zip *.db
This example will unzip all .db files in test.zip to the current folder except for Backup2005.db.

-x@<filelist> Same as -x option above, but takes in the list of files to exclude from a text file instead. The text file should contain one filename on each line. For example, our exclude.txt file looks like:

*.txt
*.jpg
Backup2005.db

pzunzip -x@exclude.txt test.zip
This example will unzip all the files in test.zip to the current folder except for files listed in exclude.txt file.


More Examples

pzunzip test.zip
This example extracts all the files in test.zip to the current folder

pzunzip test.cab sample.doc
This example extracts sample.doc from test.cab to the current folder.

pzunzip -d test.zip
This example extracts all the files in test.zip to the current folder and restores the folder structure

pzunzip -d test.zip D:\Test
This example extracts all the files in test.zip to “D:\Test\” and restores the folder structure

pzunzip test.zip @filelist.txt
This example extracts all the files listed in filelist.txt from test.zip to the current folder.

pzunzip -v test.zip
This example displays the contents of test.zip on screen.

The PicoZip Command Line Tool is a FREE archive (Zip and UnZip) utility with a command line interface (similar to PKZip and PKUnzip). You can use this tool in the Command Prompt (or DOS prompt) window, call it from a batch (.BAT) file, embed it in scripting languages or run it from other programs that allows executing external software. You can view the command line reference here.

Features

  • Create ZIP, CAB, JAR, TAR, BH, LZH and LHA archives
  • Extract ZIP, RAR, CAB, ACE, ARC, ARJ, BH, GZ, JAR, LHA, LZH, TAR, TGZ, Z and ZOO archives
  • Strong 128-bit and 256-bit AES encryption
  • Support large ZIP files (Zip64)
  • Test archive integrity
  • Display details of files in archive
  • Easy install and uninstall
  • Supports Windows 98/98/NT/2000/ME/XP

Details

Acubix PicoZip Command Line Tool 1.0 New
Release Date: February 21, 2006
File Name: PicoZipCL.exe
File Size: 636 KB