OST to PDF Converter
Convert Outlook OST mailbox to PDF for consistent viewing, printing and long-term records. Process securely and download free with no account required.
Drop your OST files here
Up to 50MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your OST files
Drag and drop or select OST files from your device. You can upload multiple files at once.
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Configure Output
Choose any available PDF output options, then start the conversion.
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Download PDF files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert OST to PDF?
OST is OST content ready to open, share, and use in compatible software. Converting it to PDF creates a fixed-layout document designed to look consistent when viewed, shared, or printed, ready for workflows that use the destination format.
PDF opens in every major browser and in dedicated readers on phones, tablets, Windows, macOS, and Linux.
Frequently Asked Questions
How do I convert OST to PDF?
Add your OST file, start the conversion, and download the completed PDF result. No account is required.
What is a OST file?
OST is an offline Microsoft Outlook mailbox file used to keep a local copy of account data.
What is included in the converted PDF?
Mailbox messages are laid out with their available headers and readable content in a convenient PDF.
How are multiple items in the OST file handled?
Readable items are processed in order and assembled into a practical PDF result.
Where can I use the converted PDF file?
PDF opens in every major browser and in dedicated readers on phones, tablets, Windows, macOS, and Linux.
Is OST to PDF conversion secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted shortly after conversion. No account is required.