Convert OST to TIFF
Convert OST to TIFF online: cached Outlook messages laid out as readable pages, saved as a TIFF image. Free, no sign-up.
Drop your OST files here
Up to 200MB per file.
Conversion Settings
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 TIFF output options, then start the conversion.
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Download TIFF files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert OST to TIFF?
Outlook keeps an OST file as an offline copy of an Exchange, Microsoft 365 or Outlook.com mailbox on your computer. The image shows the body of each message from the offline mailbox, formatted text and tables included, stacked in turn beneath an “OST mailbox” heading.
TIFF is a long-established image format for archiving, scanning and print workflows, and it holds the rendered page at full resolution.
Frequently Asked Questions
How do I convert OST to TIFF?
Drop your OST file above and press Convert. Our servers read the offline data file, export its messages and render them one after another as pages. The result is saved as a TIFF image, ready to download.
Can I turn an OST file into TIFF without Outlook installed?
Yes. The OST file is read directly on our servers, so its cached messages are laid out and rendered without Outlook or a connection to the mail server.
Which parts of each OST message are rendered in the TIFF?
Each message body is rendered with its text, formatting and tables, and the messages follow one another beneath an “OST mailbox” heading.
What happens when a OST file fills several TIFF pages?
Each page is rendered at 144 dpi and saved as its own TIFF image, named page-1, page-2 and so on, and they download together as one ZIP. A single page downloads as one TIFF file.
Is the TIFF from a OST file a single image?
Each rendered page is saved as its own standard TIFF image at full resolution. When there are several pages you receive one TIFF per page in a ZIP, numbered in order.
Is my .ost file kept private?
Your file is uploaded over an encrypted connection, converted on our servers and deleted automatically within 24 hours. We never read, share or keep your files, and no account is needed.