1Main window
Softaken Compress PST Pro home screen to start compacting Outlook PST files.

Standalone Windows utility. Original PST stays untouched—Softaken writes a new compressed PST.
100% SafeReduce Outlook PST file size and Shrink PST with Compress PST Pro that helps to remove Junk/unused Space and Compact PST Successfully with PST Compressor Feature.
Your PST file can corrupt when storage capacity of it goes beyond limit. What do you do to fix the problem? Do you remove your important PST files or compress it to minimize the size? PST compact tool of Softaken gives you the platform to resize a PST file by compressing it.
Real Softaken Compress PST Pro screens:add PST file or folder,preview mailbox data,set compression options,and choose the output location.
1Softaken Compress PST Pro home screen to start compacting Outlook PST files.
2Load one or more PST files with Softaken’s Add File / Add Folder batch options.
3Preview folders and items before you choose compression options.
4Configure unused space / junk / cache compacting and attachment remove,extract,or ZIP options.
5Choose where Softaken saves the new compressed PST (original PST is not modified).
Click a screenshot to enlarge. Guides:how-to steps· screenshots· video.
Follow Softaken Compress PST Pro steps (also shown in the demo video):
A PST file can corrupt if the data storage goes beyond limitation (ANSI – 2GB and Unicode 20 GB). The advance utility gives you facility to extract attachments,compress them and save at the desired location in your system.
This is called picking of a particular item. The utility extracts the attachments of a PST file and allows you to save in a new folder. In this way you can separate attachments from a PST file.
Under this option,the tool enables you to extract only attachments from a PST file to remove them permanently. It automatically shrinks the size of the original PST file and increase the data storage capacity.
The PST Shrink Program is safe to use. It performs its task safely. No data loss is occurred and no file is damaged during remove,compact and save attachment process.
The feature enables you to remove attachments of the selected PST file to save in a new folder. The Shrink PST feature removes unused space,junk space and unused cache to let you make the file size compact.
Save attachment feature saves the extracted attachments to user's specified location. A new folder can be created to save the extracted data.
Download Guides
The free demo lets you evaluate Softaken Compress PST Pro before buying. Softaken’s documented limit is clear:
| Features | Demo Version | Full Version |
|---|---|---|
| Compress PST Files | Yes | Yes |
| Remove Unused,Junk,Unused Space | Yes | Yes |
| Remove Attachments from PST | Yes | Yes |
| Save Attachments in Other Location | Yes | Yes |
| Support ANSI and Unicode Outlook File | Yes | Yes |
| Support Plain Text,RTF &HTML Formats | Yes | Yes |
| Support Outlook 2016/13 &Other | Yes | Yes |
| Support Windows 11/10/8/7/others | Yes | Yes |
| Limitation | 10 items | Unlimited |
| Price | Free | From $29 |
Customer Review Verified
My PST was huge and Outlook kept freezing. This tool removed the unused space and junk,and Outlook feels faster now. Simple to use.
Customer Review Verified
I pulled out the heavy attachments into a folder and the PST size dropped a lot. No Outlook install needed on my backup PC. Good tool.
| Item | Details |
|---|---|
| Product | Compress PST Pro |
| Publisher | Softaken Software |
| Platforms | Windows 11,10,8.1,8,7 |
| Demo | 10 items |
| Page | https://www.softaken.com/compress-pst-pro |