Privacy5 min read
Are online PDF converters safe? What happens to your files
Most converters upload your document to a server. Here is what that means for privacy, how to tell the difference and how to convert files without uploading.
Quick answer
Many converters send your file to their servers. A browser-only tool processes the file on your device and uploads nothing. You can check this yourself with your browser's network tab.
Two ways a converter can work
- Server-side: your file is uploaded, processed and offered back. It travels over the internet and sits on someone else's computer for a while.
- In the browser: the website sends you the program, and your device does the work. The file never leaves it.
Why it matters
Contracts, ID documents, bank statements and medical records should not be uploaded unnecessarily. Even a trustworthy service is one more place a copy can exist.
How to check a site
- Open the tool and your browser's developer tools (F12) on the Network tab.
- Process a harmless test file.
- Look for a large upload request carrying your file. A browser-only tool shows none.
You can also test it offline: load the page, switch off Wi-Fi, then convert a file. If it still works, nothing was uploaded.
Before you share a PDF
- Check hidden data with PDF Privacy Inspection.
- Remove sensitive details with Redact PDF. A black box drawn on top is not redaction.
- Add a password with Protect PDF.
Frequently asked questions
Does this site upload files?
No. Tools run in your browser and the site has no upload feature.