The following are reviews of PicoZip published by independent publications. If you come across any review of PicoZip that is not posted below, please email us the URL. Thanks.

PicoZip Reviews

“PicoZip packs lots of user-friendly features that make it a joy to use. … This is a complete file compression and backup solution in one application. … If you don’t already have a file compression utility, I’d really give serious consideration to PicoZip. I’m certain you’ll be as pleasantly surprised as I was.”

Click to read the full review

“PicoZip is a program for working with and creating compressed files that has a clean, intuitive interface. I found the program very easy-to-use and that makes it perfect for both new and experienced users. It has a number of interesting features that put it a step above many other compression programs, at least to me. For example, it makes it extremely easy to do backups. At the same time it can also integrate with your email, work in batch mode, and convert from a wide variety of compression formats. I’ve looked at a lot of similar programs and found this one to be more appealing than most. … So, if you’re looking for a program for working with compressed files, take a good look at PicoZip — very well done!”

Click to read the full review

“PicoZip offers a convenient Explorer-style window, showing you all the archive files in the highlighted directory and displaying the contents in a separate pane; much easier than browsing all files, picking out the one you need from non-archive file types and then opening it in an entirely separate window. Favorite organization is head and shoulders above the competition as well, which comes in handy for those of us who compress lots of files.”

Click to read the full review
“PicoZip provides superior compressed file format control and manageability that will definitely appeal to those heavily involved in working with these types of files. … While the more advanced capabilities of PicoZip may not be that relevant to those new to working with file compression utilities, I think those who depend on these utilities for a major part of their work will definitely want to give serious consideration to this powerful, user-friendly program that is packed with power and priced very competitively.”

Click to read the full review

“You owe it to yourself, if you aren’t using PicoZip already, to give it a spin. I stress the point that I seriously doubt you’ll be disappointed. Some compression apps just aren’t worth buying because most have alternatives that are free. Well, PicoZip has stability and features that you will just not be able to find in a freely produced utility. A big kudos to Softchitect for producing an excellent grade product!”

Click to read the full review
“PicoZip integrates right into the windows shell and allows you to open almost any type of archive you can think of. Password protection, archive repair and Uuencode tools are only a mouse click away. The software also makes your archive contents more viewable with the use of filters and an easy-sorting system. … This program features one of the nicest integrations of the windows explorer I have seen in a compression program.”

Click to read the full review

“Novices will love how easy this program is to use. The wizard will guide you through each process. If you run into any trouble you can always open up the help file. Hey man, even the advanced features are simple to understand and use. This is one program made to make your life much, much easier. It’s got integrated e-mail support and batch operations that’ll help make repetitive tasks quick and painless. Heck, you can even set it up to handle routine backups automatically!”

Click to read the full review

“This file compression tool is more user friendly than Winzip, WinRar and WinAce put together. … I will never use another file compression utility. PicoZip has outdone some of the best utilities out there. Why would you download and install all those different programs, when PicoZip will do it all, and then some. PicoZip really is the best way to manage Zip files.”

Click to read the full review
“PicoZip is a great program, it has a clean interface, and incorporates a lot of options not seen in other archive programs. The ability to access more than one archive format is key since people do not want to download more than one program to open a different archive format. …
This program is filled with a lot of great features and for those who do backup their files on a regular basis, would be thrilled by what PicoZip has to offer”

Click to read the full review

[ Click here to see the awards given to PicoZip or Read testimonials by PicoZip users ]

The following is a comparison of the licensing costs* between PicoZip and three of the most popular file compression utilities: WinZip, WinRar and WinAce. We would like to point out that PicoZip provides the lowest cost solution.

 Lowest Cost
 Highest Cost


No. of License
WinZip 1
WinAce 2

* Licensing costs shown are correct as at May 24, 2002.

1 The WinZip licensing cost was calculated from the following table obtained from WinZip’s website:


2 – 9
10 – 24
25 – 49
50 – 99
100 – 199
200 – 499
500 – 749

The WinAce licensing cost was calculated from the following table obtained from WinAce’s website:


2 – 9
10 – 24
25 – 49
50 – 99
100 – 199
200 – 499
500 – 999

Click here to download PicoZip

Read all the nice things that PicoZip users have said about PicoZip. You can also read reviews of PicoZip over here.

“PicoZip is a powerful tool for working with compressed files, yet it’s also easy-to-use. It has support for a wide variety of compression formats. At the same time, it makes it easy to generate self-extracting files and do regular backups. PicoZip can convert from one format to another, integrate with email, and process batches of files. So, if you’re looking for a program for working with compressed files, take a good look at PicoZip — very well done!”
Michael E. Callahan aka Dr. File Finder ™

“Hey man, even the advanced features are simple to understand and use. This is one program made to make your life much, much easier.”
Dave’s Review

“PicoZip really kicks butt! I uninstalled all 3 compression utilities I had before and just use PicoZip now.”
Michael Klucher
Founder of

“A very nice zip tool that comes with everything you need and more !”
Review in

“This file compression tool is more user friendly than Winzip, WinRar and WinAce put together. … I will never use another file compression utility.”
Brian Minca
Founder of

“PicoZip is loaded with features that make it the ultimate compression utility. It is without a doubt capable of replacing whatever you may be using now.”
Jason Fontenot
Founder of

“Makes WinZip look a little outdated! PicoZip is super quick and seemlessly provides all of my archiving needs – superb effort!!!”
Shaun McGill
Founder of

“I love PicoZip. It’s fast, cheap, very easy to use, packed with options and it looks good too.”
Marcel Klum
Co-Founder of

“PicoZip is fantastic !! It is robust, fast and simple, but still full of advanced features”
Campbell Mander
Founder of

“PicoZip is cheaper and even better than many well known zip utilities.”
Nicolás H. Martins
Chairman of

“I have to say that I love it. It’s taken over from WinRAR as my zipper of choice, hands down.”
Wil Harris
PR Executive of

“PicoZip is the best utility around because it supports most of the archive formats.”
Rahul Singh
Founder of

“To tell the truth I used to be a keen Winzip user, and loved the features, but after using PicoZip I have converted and now rely on this in my daily zipping and unzipping of files.”
Chris Freeman
Review in

[ Click here to see the awards given to PicoZip or Read reviews of PicoZip ]

Acubix PicoZip is an award winning file compression utility for Microsoft Windows users. Its intuitive user interface is extremely easy to use, while its wide ranging support for most file compression formats and comprehensive feature set makes PicoZip the only archive utility you will ever need.

PicoZip is compatible with Zip files created by WinZip, PKZip and others.


  • Supports ACE, ARC, ARJ, BH, CAB, GZ, JAR, LHA, LZH, RAR, TAR, TGZ, WAR, Z, ZIP, ZOO, MIM, XXE and UUE file formats
  • Simple and intuitive user interface
  • Seamless Windows integration
  • Fast and easy automated backup
  • Integrated archive files explorersmallmontage
  • Powerful batch features to automate repetitive tasks
  • Easy favorite archive folders management
  • Strong 128-bit and 256-bit AES encryption
  • Built-in support for CD/DVD burning
  • Create self-extracting archives
  • Support large Zip files (Zip64)
  • Repair ZIP archivesmainbuy
  • Split/Merge ZIP archives
  • Convert archive formats
  • Flexible filtering of files in archives
  • Integrated email support
  • Virus scanner support
  • Quick access tray tool
  • Customizable look using toolbar skins
  • Command line support
    (Requires our FREE Command Line Tool )
  • Recover password from Zip files
    (Requires our FREE add-on utility)
  • Lifetime FREE upgrade
  • Supports Windows 98/98/NT/2000/ME/XP *

More Features | Reviews | Screenshots | From the Press | Pricing comparison with other compression software


PicoZip 4.02 Released
This version of PicoZip contains some fixes and security updates. * This is an important security update.* Please download it here. Upgrade is FREE for all registered users.

Read our full changelog here.

PicoZip Command Line Tool 1.0 Released
Command line support is now available for PicoZip and it is free ! Please click here for more information.

Click here to download toolbar skins to customize the look of your PicoZip 4.0 ! If you want to create your own PicoZip Toolbar Skins, download our FREE PicoZip Skin Creator.

Computer Newbies …

Never used a file compression utility before ? No problem ! PicoZip comes with a wizard interface that guides you every step of the way when performing common tasks such as creating a Zip file or unzip a file. Also, the extensive help file is always there to help you, but we believe you will find PicoZip’s user interface to be so intuitive, you would rarely need it.

Experts and Techies …

You will find that PicoZip provides many powerful features that makes performing time consuming tasks a breeze. If you routinely backup files, PicoZip’s backup feature makes it as simple as just two mouse clicks ! Need to extract many Zip files at once ? No problem. The batch extraction feature does it all in one operation. In fact, most archive operations can be performed as a batch operation, so no more boring, repetitive tasks for you !

Buy PicoZip Online

creditcardYou can buy PicoZip online 100% risk-free by clicking here. The price is only US$ 24.95 for a single-user license. Information on other license packages are available here and you can view a price comparison with other competing products here.

Need Help ?

If you have any questions about PicoZip, do take a look at our frequently asked questions for quick answers.

NOTE: As no more support is being offered for PicoZip utilities, purchasing the software isn’t possible. There are no purchase links on this page, however, we decided to keep this page online for legacy purposes.

Buy PicoZip online and have the registration code emailed to you within one business day (usually within a few hours). We use the services of SWREG for payment processing. All transactions are carried out on a secure server.

Your purchase is backed by our 100% Risk-Free 30-Day Money Back Guarantee. If for any reason you are not 100% satisfied, just let us know within 30 days of purchase and get a full refund. That is our commitment for your peace of mind.

Registration Benefits

  • Your own personalized registration key
  • Unlimited usage with no popup reminders
  • Priority email support from the developer of PicoZip
  • FREE upgrade to all future versions of PicoZip
  • Automatic notification of upgrades

Buy PicoZip Now

We accept: VISA, MasterCard, American Express, PayPal, Discover/Novus, Solo, Switch, JCB, Connect, Eurocard, Delta, UK and US Checks, Money Orders and Bank Wire Transfers.


Buy any of the following 100% risk-free by clicking on the “Buy This” link corresponding to the item you wish to buy. Your order will be processed on a secure server.

No of Licenses
Price (US$)

Avg Price per
License (US$)

Single User License
2 License Pack
5 License Pack
10 License Pack
25 License Pack
50 License Pack
100 License Pack
200 License Pack
500 License Pack
1000 License Pack  

For higher licensing volumes or custom license packages, please contact our sales staff using the contact form over here. We offer very special discounts on volume/site licensing for large corporations. Non-profit organisations and educational institutions are also entitled to special discounts.

How Does PicoZip Registration Work ?

When you purchase PicoZip, you will receive two emails. The first email will be a receipt confirming your purchase of PicoZip, and is sent as soon as your order is processed. The second email which will be sent within 1 working day (normally within a few hours), and will contain the registration code necessary to register your copy of PicoZip.

Need Help ?

If you have any questions about ordering or registration, please do not hestitate to contact us. We will be most happy to assist you.

Simple and intuitive user interface

PicoZip’s user interface were designed to be intuitive and simple, making it extremely easy to use. PicoZip’s features can be accessed using the standard interface, Wizard interface or through Windows Explorer via shell extensions. You can choose to use the user interface that you are most comfortable with.

Supports more archive formats

PicoZip supports more archive formats than most other archive utilities available today and this is important because so many files available on the Internet today are compressed in various formats. PicoZip can create archives in 7 different formats (BH, CAB, JAR, LHA, LZH, TAR, ZIP) and extract files from 19 different archive formats (ACE, ARC, ARJ, BH, CAB, GZ, JAR, LHA, LZH, MIM, RAR, TAR, TGZ, UUE, WAR, XXE, Z, ZIP, ZOO). PicoZip can also create self-extracting archives in 8 different formats (ACE, ARJ, BH, JAR, LHA, LZH, RAR, ZIP).

Seamless Windows integration

PicoZip is tightly integrated with Windows Explorer, allowing you to carry out most commonly used operations directly from within Windows Explorer. You can also drag-and-drop files to or from Windows Explorer. PicoZip is so well integrated that most of the time, you would not even need to run PicoZip directly. See related screenshots

Fast and easy automated backup

PicoZip comes with an easy to use full-featured backup tool that automates most of the backup task for you. You can create “Backup Sets” that stores information on how a backup should be created, then perform the backup anytime by selecting the “Backup Set”. Routine backups takes only two mouse clicks ! See related screenshots

Highly customizable

PicoZip provides lots of configurable options to allow you to customize almost everything to make PicoZip work just the way you want it to. See related screenshots

Create self-extracting archive

PicoZip can create archives that can extract itself without the use of any other archive utility. This is useful for distributing archive files to others who may not have an archive utility, or may not know how to use one. You have the option to create self-extracting archives in 8 different formats.

Integrated archive files explorer

PicoZip comes with an integrated archive files explorer that allows you to easily browse your computer for archive files or to browse the folders within an archive file.

Powerful batch operations

PicoZip allows you to carry out tasks like Extract, Add, Repair, Test, Virus scan, Make .EXE and Convert on many archives in a single operation, saving you valuable time while reducing repetitive work.

Strong 128/256-bit AES encryption

PicoZip allows you to protect sensitive data in ZIP files using strong 128-bit or 256-bit Advanced Encryption Standard (AES) encryption. PicoZip encrypted ZIP files are WinZip compatible. The National Institute of Standards and Technology (NIST) selected AES as the standard for both U.S. government and private data encryption.

Built-in support for CD/DVD burning

PicoZip comes with integrated CD/DVD writing capabilities that makes it easy for you to burn your archive files directly to CD/DVD without needing to use other third party software. PicoZip support CD-R, CD-RW, DVD-R, DVD-RW, DVD+R, DVD+RW and DVD-RAM.

Virus scanner support

PicoZip can be configured to work with most virus scanners available today.

Convert archive formats

PicoZip can easily convert archives from one format to another.

Integrated email support

PicoZip can automatically created an archive and insert it into a new email ready to send in just three mouse clicks from within Windows Explorer, without even having to open PicoZip. (Note: You must have a MAPI compliant email program like Outlook, Outlook Express, Eudora, etc. in order for this to work)

Quick access tray tool

PicoZip’s tray tool resides in the Windows tray area on your task bar, providing you with quick access to commonly used features. You can also run backups or open recently used archives from here.


PicoZip allows you to bookmark all your favorite folders and makes it really simple to browse them for archives using the built-in file explorer.

Files filter

The Filter feature in PicoZip allows you to filter the files in an archive based on a filemask (e.g. *.doc, *.txt).

File find

The powerful File find feature allows you to search for files within an archive using wildcards, range of dates, range of file sizes or any combination of those criteria.

Extensive help

PicoZip comes with an extensive context sensitive help system. If at any time, you have any difficulty using PicoZip, just hit the “F1” key and the relevant information will be shown to guide you.

Repair ZIP archives

PicoZip can repair damaged ZIP archives.

Split ZIP archives

PicoZip can split large ZIP archives into many smaller files, making it easy to store large ZIP archives into practically any media. PicoZip split ZIP files are WinZip compatible.

Export files list

PicoZip can export archive contents listing in 3 different formats: HTML, CSV (Excel) or plain text.

Print files list

PicoZip can print the archive contents listing directly to your printer.

Customizable Look Using Toolbar Skins

PicoZip’s toolbar icons can be customized using toolbar skins that you can download here.

Lifetime free upgrade

Registering PicoZip entitles you to FREE upgrades to all future versions of PicoZip. You only pay once, unlike many other competing archive utilities that charges you for every major upgrade.

Click here to Order

Check out some Screenshots here

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

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)