Convert OST to PNG
Convert OST to PNG online: cached Outlook messages laid out as readable pages, saved as a lossless PNG. 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
- 101
Upload your OST files
Drag and drop or select OST files from your device. You can upload multiple files at once.
- 202
Configure Output
Choose any available PNG output options, then start the conversion.
- 303
Download PNG files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert OST to PNG?
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.
PNG keeps every pixel exactly as rendered, so text, thin lines and flat colours stay crisp, and transparency is preserved.
Frequently Asked Questions
How do I convert OST to PNG?
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 lossless PNG, ready to download.
Can I turn an OST file into PNG 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 PNG?
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 PNG pages?
Each page is rendered at 144 dpi and saved as its own PNG image, named page-1, page-2 and so on, and they download together as one ZIP. A single page downloads as one PNG file.
Why is PNG a good fit for a OST conversion?
PNG is lossless: the image keeps every rendered pixel with no compression artefacts, which keeps small text, table lines and drawings perfectly sharp.
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.