Softaken Compress PST Pro
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Standalone Windows utility. Original PST stays untouched—Softaken writes a new compressed PST.

100% Safe

Compress PST Tool

Compact Outlook PST Files — remove unused space,junk space,and unused cache;optionally remove,extract,or ZIP attachments (ANSI &Unicode). Standalone Windows tool—no Microsoft Outlook required.

(Average Rating 4.1Based on 58rating)
How Softaken shrinks PST:compact by unused/junk/unused cache;or Remove All Attachments;Remove &Save Attachments;Remove,Save &Compress (ZIP);or compact without removing attachments. Batch Add File / Add Folder. From $29.
ANSI PSTUnicode PSTNo Outlook requiredNew output PSTWindows 11–7

Reduce 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.

  • Compress large sized PST files by removing unused space,junk space and unused cache
  • Supports both ANSI &Unicodeformats
  • Remove all attachments
  • Remove and save attachments and compress them
  • A standalone program,works without installation of MS Outlook
  • Compact PST files without causing any error
  • compact without removing any attachment
  • A Windows utility,supported with all the latest editions of operating systems
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Software interface

Real Softaken Compress PST Pro screens:add PST file or folder,preview mailbox data,set compression options,and choose the output location.

Compress PST Pro – main window1

Main window

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

Compress PST Pro – Add File or Add Folder2

Add PST file or folder

Load one or more PST files with Softaken’s Add File / Add Folder batch options.

Compress PST Pro – mailbox preview3

Mailbox preview

Preview folders and items before you choose compression options.

Compress PST Pro – compression options4

Compression options

Configure unused space / junk / cache compacting and attachment remove,extract,or ZIP options.

Compress PST Pro – output location5

Output location

Choose where Softaken saves the new compressed PST (original PST is not modified).

Click a screenshot to enlarge. Guides:how-to steps· screenshots· video.

How to compress a PST file

Softaken steps

Follow Softaken Compress PST Pro steps (also shown in the demo video):

  1. Download and installSoftaken Compress PST Pro on Windows.
  2. Add File or Folderand upload the PST file(s) you want to compact.
  3. Previewmailbox folders and items before you start.
  4. Choosean output location for the new compressed PST (original PST stays unmodified).
  5. Selectcompression options (unused/junk/cache;remove,extract,or ZIP attachments) and hit Start.
Full user guideScreenshotsVideo pageSystem requirements

Features of Compact Outlook PST Software

compress large pst

Compress Large PST Files

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.

remove &save attachments

Remove & Save Attachments

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.

attachments

Remove PST File Attachments

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.

safe task

Safe Task

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.

Remove,Save & Compress PST

Remove,Save &Compress

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 folder

Save Attachments to Desired Location

Save attachment feature saves the extracted attachments to user's specified location. A new folder can be created to save the extracted data.

Compress PST FAQs

Softaken Compress PST Pro shrinks PST size by removing unused space,junk space,and unused cache,and optionally by removing or extracting attachments. Softaken documents a Safe Task:no data loss and no file damage during remove,compact,and save attachment processes. Softaken does not modify the original PST—it copies data and creates a new compressed PST.
Softaken documents these compression choices:(1) Remove unused,junk,and unused cache space (including compact without removing attachments);(2) Remove all attachments;(3) Remove and save (extract) attachments to a chosen location;(4) Remove,save,and compress attachments (ZIP). Softaken’s docs also list Compress Attachments (ZIP into a new PST) and combined Remove &Extract &Compress options.
No. Softaken Compress PST Pro is a standalone Windows utility that works without installation of MS Outlook or any other tool.
Yes. Softaken Compress PST Pro supports both ANSI and Unicode PST formats,and Softaken states there is no PST file size limit for compression. Softaken also notes ANSI (~2 GB) and Unicode storage limits as reasons oversized files can corrupt.
Softaken’s Remove &Save / extract options save attachments to a folder you choose (or a new folder). Softaken does not document embedding hyperlinks or file paths into the email body after extraction. Access extracted files from the output folder Softaken creates.
Softaken documents retaining the original folder structure and supporting Plain Text,RTF &HTML formats,with a Safe Task (no data loss / no file damage). Softaken does not use the phrases “RFC 822 headers” or “inline graphics” on this product page. Softaken writes a new compressed PST and leaves the original PST unmodified.
Yes. Softaken documents Add File or Folder to upload PST files,and states you can resize multiple PST files at a time with Compress PST Pro.
Softaken’s free demo lets you try Compress PST Pro features. Softaken’s documented demo limit is 10 items;the full license processes unlimited items. Softaken does not list a watermark or a 10–25 items range for this product. Personal license starts from $29at Softaken’s buy page.

Software Specifications

💻
Software Information
Product Name
Compress PST Pro
Version
2.0
File Size
5.3 MB
Starting Price
From $29 (Personal)
🔧
Supported &Format
PST Formats
ANSI &Unicode Outlook PST
Compression Options
Unused/junk/cache compact;remove attachments;remove &save;remove/save/ZIP;compact without removing attachments
Demo Limit
10 items (full version:unlimited)
License
Trial + Full
Message Formats
Plain Text,RTF &HTML
Processing
Standalone Windows utility;no MS Outlook required;new compressed PST (original untouched)
⚙️
System Requirements
Processor
Any Pentium Class
Operating System
Windows 11,10,8.1,8,7 &Other
Memory
512 MB Minimum
Hard Disk
100 MB of free space for software installation
📦
Delivery &Support
Electronic Delivery
Via Email
Delivery Time
15 Minutes
Language
English
Support Options
Emails,Chat &Skype

Download Guides

Installation Guide

User Manual

Purchase Related FAQs

Recent Blogs

Demo Version &Comparison

Demo Version Limitations

The free demo lets you evaluate Softaken Compress PST Pro before buying. Softaken’s documented limit is clear:

  • Demo:process up to 10 itemsto test compacting and attachment options
  • Full version:unlimited items
  • Softaken does not list a watermark or a 10–25 items range for this product
  • Personal license from $29at Softaken’s buy page

Comparison:Demo vs Full Version

FeaturesDemo VersionFull Version
Compress PST FilesYesYes
Remove Unused,Junk,Unused SpaceYesYes
Remove Attachments from PSTYesYes
Save Attachments in Other LocationYesYes
Support ANSI and Unicode Outlook FileYesYes
Support Plain Text,RTF &HTML FormatsYesYes
Support Outlook 2016/13 &OtherYesYes
Support Windows 11/10/8/7/othersYesYes
Limitation10 itemsUnlimited
PriceFreeFrom $29

Compress PST Reviews

Customer Review

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

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.
Write a Review
Specifications
ItemDetails
ProductCompress PST Pro
PublisherSoftaken Software
PlatformsWindows 11,10,8.1,8,7
Demo10 items
Pagehttps://www.softaken.com/compress-pst-pro