Oversized PST files are still one of the biggest problems Outlook users face in 2025. When a PST file grows too large, Outlook turns sluggish, hangs frequently, and sometimes refuses to open the file altogether. From performance issues to corruption risks, a heavy PST file can easily disrupt your work. That’s why many users look for a reliable PST Splitter Tool that can break large PST files into smaller, manageable ones—without losing a single bit of data.

In this guide, we’ll explore why splitting PST files is important, what features to look for in a PST splitter, and why Advik PST Splitter Tool stands out as the best PST splitting software in 2025.

Why Do Users Need a PST Splitter Tool in 2025?

As email communication grows, attachment sizes increase, and data remains stored for years, PST files expand quickly. Here are the most common issues caused by oversized PST files:

• Slow Outlook performance
• Frequent freezing or “Not Responding” errors
• Corruption of Outlook data
• Failed migrations to Office 365 or other platforms
• Backup errors during export and import
• Difficulty managing and locating emails

Splitting your PST file into smaller parts is the safest and smartest way to prevent these problems.

What Makes a PST Splitter Tool the “Best”?

Before choosing any PST splitter, users should check:

• Ease of use
• Split options available (size, year, date, folder)
• Ability to handle corrupt and password-protected PST files
• Support for ANSI and Unicode formats
• Speed and accuracy
• No Outlook dependency
• Data safety and metadata preservation

In 2025, one tool that checks all these boxes is Advik PST Splitter Tool.

Advik PST Splitter Tool – The Best PST Splitter Software in 2025

Advik PST Splitter Tool is one of the most recommended utilities for breaking oversized PST files safely. It is widely used by home users, IT admins, technicians, and small businesses because of its accuracy, high speed, and simple interface. The tool offers complete flexibility with multiple splitting methods and ensures your data stays 100 percent safe throughout the process.

Key Features of Advik PST Splitter Tool

1. Split PST File by Size

Divide your PST files into small chunks like 1GB, 2GB, 5GB, 10GB, or any size you prefer. Perfect for avoiding PST corruption issues.

2. Split PST by Year

Create separate PST files for each year (e.g., 2018, 2019, 2020). A great option for cleaning up old emails.

3. Split by Folder

Break your file into multiple PSTs based on folders like Inbox, Sent Items, Archives, etc.

4. Split PST by Date Range

Extract only the emails you need by choosing a specific date period.

5. Works Without Outlook

No requirement to install or configure Microsoft Outlook during the splitting process.

6. Maintains 100% Data Integrity

Attachments, folder structure, metadata (To, From, CC, BCC, Subject), and formatting remain untouched.

7. Supports Corrupt and Password-Protected PST Files

You can split damaged, locked, or inaccessible PST files safely.

8. Batch Split Mode

Save time by processing multiple PST files in one go.

9. Compatible With All Windows Versions

Works smoothly on Windows 11, 10, 8.1, 7, XP, and Windows Server editions.

10. Free Trial Available

Split PST files containing 25 emails per folder for free before purchasing.

How to Split PST Files Using Advik PST Splitter (Step-by-Step)

Follow these quick steps:

1. Install and launch Advik PST Splitter Tool.

2. Click Add File and upload your PST file.

3. Select the splitting method:
   • By Size
   • By Year
   • By Date
   • By Folder

4. Choose the destination path.

5. Click Next.

Your large PST file will be divided into neat, smaller PST files within minutes.

Why Advik PST Splitter is the Best Choice in 2025

Here’s why thousands of users prefer Advik over other tools:

• It provides more split options than most tools
• Works without Outlook
• Handles corrupted and password-protected PSTs
• User-friendly for beginners and powerful for professionals
• Very fast processing with 100% accurate results
• Affordable pricing compared to other premium tools
• Trusted by IT experts, migration teams, and support professionals

Comparison: Advik vs Other PST Splitter Tools in 2025

Advik clearly wins in performance, safety, and ease of use.

Final Verdict

If you want to split your oversized PST files safely, quickly, and without data loss, Advik PST Splitter Tool is the best PST splitter in 2025. Whether you're cleaning old archives, fixing Outlook issues, or preparing PST files for migration, this tool delivers reliable results every time.

You can try the free version to test its performance before upgrading.