{"id":6772,"date":"2022-11-21T10:22:19","date_gmt":"2022-11-21T10:22:19","guid":{"rendered":"https:\/\/www.cigatisolutions.com\/blog\/?p=6772"},"modified":"2025-09-17T09:31:26","modified_gmt":"2025-09-17T09:31:26","slug":"how-to-compact-ost-file","status":"publish","type":"post","link":"https:\/\/www.cigatisolutions.com\/blog\/how-to-compact-ost-file\/","title":{"rendered":"How to Compact OST File in Outlook: Easy Guide"},"content":{"rendered":"\n\n
\n \n
\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n<\/div>\n \n\n
\n 5\/5 - (1 vote) <\/div>\n <\/div>\n\n

Even after emptying the Deleted Items folder, the OST file size does not immediately shrink. The user needs to compact OST file to free up disk space and improve Outlook performance. In this article, we\u2019ll explain different methods to compact an OST file to reduce its size. In addition to this, we\u2019ll learn about a professional tool, Cigati PST Compact Tool<\/a><\/strong>. This tool compresses single or multiple PST files quickly. Compacting also lowers the risk of potential Outlook issues.<\/p>\n\n\n

\n
\n