Convert OST2 Files Online — 1 Format Options
Convert OST2 File Online — Free & Instant
No signup required. Works in your browser.
📁 Drag & drop your file here
or click to browse • Max 100MB
✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install
About OST2 Files
OST2 (.ost) is a email file format developed by Microsoft. Outlook Offline Data
It is commonly used by professionals to read and archive files in professional and personal workflows. With OpenAnyFile, you can convert your .ost files to 1 different formats directly in your browser — no software installation required.
How to Convert OST2 Files — Step by Step
- Upload your file — Drag and drop your .ost file into the converter above, or click "Browse" to select it from your device. Files up to 50MB are supported.
- Automatic detection — OpenAnyFile identifies the OST2 format using magic byte signature analysis (not just the file extension), ensuring accurate format recognition.
- Select target format — Choose from 1 supported output formats. Popular choices include PST.
- Convert instantly — Processing happens in the cloud and typically takes just a few seconds, even for large files.
- Download your file — Once conversion is complete, download your converted file immediately. Files are automatically deleted after 1 hour for security.
Why Convert OST2 Files?
Professionals working with email files often need to repurpose content for different workflows. Converting OST2 files lets you adapt content for presentations, web publishing, or archival.
- Universal Compatibility: Not everyone has software that opens .ost files. Converting to a universal format like PDF, JPG, or PNG ensures anyone can access your content on any device.
- Smaller File Size: Some target formats offer better compression, reducing file size by up to 80% for easier sharing via email or cloud storage.
- Easier Editing: Convert to an editable format to modify content that may be locked or read-only in .ost format.
- Long-term Archiving: Convert to standardized formats (PDF/A, TIFF, PNG) for reliable long-term storage and future accessibility.
- Web Publishing: Convert .ost to web-friendly formats for use in websites, social media, or online presentations.
All OST2 Conversion Options (1 Formats)
Below is the complete list of formats you can convert .ost files to using OpenAnyFile:
- OST2 to PST — Convert your .ost file to PST format online, fast and free
Tips for Best Conversion Quality
Batch conversion is available for Pro users — convert multiple .ost files at once to save time on large projects.
OpenAnyFile uses professional-grade conversion engines to ensure maximum quality. Common issues with .ost files include: Sync corruption
OST2 Format Details
| Property | Value |
|---|---|
| Format Name | OST2 |
| File Extension | .ost |
| Category | |
| Developer | Microsoft |
| Conversion Targets | 1 formats |
Frequently Asked Questions
Can I convert .ost files online for free?
Yes. OpenAnyFile lets you analyze and preview .ost files for free. You can convert up to 3 files per day on the free plan. Unlimited conversions are available with Pro.
What formats can I convert .ost to?
OST2 can be converted to 1 formats including PST. Each conversion preserves quality and formatting as much as the target format allows.
Is it safe to convert .ost files online?
Absolutely. Files are processed securely using HTTPS encryption and automatically deleted after conversion. We never store your file contents permanently. Your data stays private.
Do I need software to convert .ost?
No. OpenAnyFile works entirely in your browser — no downloads or installations needed. It works on Windows, Mac, Linux, iOS, and Android devices.
How long does OST2 conversion take?
Most .ost files convert in under 10 seconds. Larger files (over 50MB) may take up to 30 seconds depending on the target format and complexity.
Can I convert multiple .ost files at once?
Yes, batch conversion is available for Pro users. Upload multiple .ost files and convert them all to the same target format simultaneously.