Is It Safe to Use Online PDF Converters? What Happens to Your File
Free online converters are convenient, and for a school flyer they are fine. But the way they work is worth knowing: to convert your file, a website has to receive a full copy of it.
What happens when you upload a file
- Upload: your file travels over the internet to the company's server.
- Processing: software on that server converts it.
- Storage: many sites say they delete files after a set time, such as a few hours. How long, and how reliably, is up to the company and its policy.
- Download: you fetch the result.
Try it: DIL runs 100% on your device. You can also try the free Lite version first.
Get DIL – $16 one-timeTry free LiteWhat to know
- It matters most for: contracts, ID copies, payslips, medical or financial documents, and anything a client or employer has asked you to keep confidential. Some employers forbid uploading work documents to third-party sites.
- Questions to ask about any online tool: Who runs it? How long are files kept? Is the page served over HTTPS? Does the privacy policy say whether files are used or shared?
- Ways to avoid uploading at all: use features already built into your computer (such as Preview on a Mac), or tools that run locally in your browser or as installed software.
- Our option: DIL is our own tool. It runs completely in your browser, with no uploads, and carries a rule that blocks internet connections. You can turn Wi-Fi off and it keeps working. It does not do everything (for example, no text recognition on scans), so use what fits your task.
Questions
Are all online converters unsafe?
No. Many are run by reputable companies. The point is that your file leaves your device, so it is worth choosing deliberately for sensitive documents.
How can I check that a tool is not uploading my file?
Turn off your internet after the page loads and try converting. If it still works, nothing is being uploaded.