Reduce and Compact Outlook PST file size into smaller segments with the help of Manual Archiving & Export options, as it effectively shrinks the burden of PST file. Know more: http://www.msoutlooktools.com/category/options/compact/

2. Introduction
What is
Compact
PST
How to
Compact
PST File
In
Outlook?
Manual
Way to
Compact
PST files

3. What is Compact PST?
To make free space on your Hard-disk, You can remove some
unwanted items from various PST files and then compact all files to
make them smaller this process is known as Compact PST.
There are two types of PST file edition- ANSI & Unicode.
ANSI PST file is used in Older version of Outlook. (97 to 2002) and
its file format has a size limit of 2 GB.
Unicode PST file is basically used in latest version of Outlook (2003-
2013). This file format has size limit of 20 GB to 50 GB. 20 GB in
Outlook 2003/2007, 50 GB in Outlook 2010 and 2013.

4. Need to Compact PST Size
When PST file crosses its size limit, it cannot be open anymore in MS
Outlook and you are not able to add data in it. Oversized PST file
always reduce the chance of data deletion or corruption. But before an
oversized PST file gets corrupted, while you compress or reduce size
of PST file then the situation of corruption can be avoided. Other than
compressing or reducing files, you can split and Break PST files into
smaller segments. Compression of PST files is big remedy, while you
are facing these problems:
 Slowdown of Outlook
 Outlook Not Responding
 Outlook keeps freeze or hangs

5. Automatically Reduce
Size of PST File
1. Deleted some unnecessary Items from your machine.
2. Open “Folder list view” from the bottom of the Navigation pane,
then click the “Folder list” icon.
3. In the Navigation pane, right click on the “Deleted items folder”,
then click on “Empty folder”.
4. Go to the Tools menu > Account Settings
5. On the “Data file tab”, click on “Data file” which you want to
compact > click Settings > Compact Now.

6. Reduce PST Size by Archiving
Steps to Archive PST Files Data
 Open Outlook and Go to the File tab > Data File Management >
Add
 Choose the Desired PST file format > Ok
 Type the name of Archive PST file under Name section
 Click Ok > Close
Reduce PST Size by Exporting
Steps to Export PST Files Data
 Open “Outlook” and click on “Import and Export” from the Files
menu.
 Select one option from “Choose an Action” to Perform

7.  Select “File type” to import PST file > Next
 Browse “PST file” to Import and choose desired
option from all of them click on the “Next button” >
“Finish”

8. Reduce PST File Size by Splitting
Process
Split PST Files in Three Steps!!

9. Reduce PST File Size by Splitting
If you want to reduce PST file size through Splitting
options then you should move on third- party utility
like- SysTools Split PST Software. This tool perfectly
splits heavy files into smaller one. It split PST files data
through several options such as:
 Split by Date
 Split by Year
 Split by Size
Process
Read More:
http://www.msoutlooktools.com/category/options/compact/