Free PDF tools that never upload your files
Merge, compress, convert, sign and protect PDFs and documents right in your browser. No sign-up, no watermarks — and your files stay on your device.
- Files never uploaded
- Free, no sign-up
- Works on any device
- Works offline
All tools
Pick a tool to get started. Everything runs in your browser.
PDF tools
Convert files
OCR & scanning
Developer tools
Your files never leave your device
Most online PDF sites upload your documents to their servers. DocuVault doesn’t. Everything happens inside your browser, so there is nothing for anyone to see, store or leak.
Check it yourself
Use a tool once, then turn off your Wi-Fi or switch to airplane mode and use it again — it still works. Developers can watch the Network tab: no file is ever sent.
Step 1
You choose a file
Your browser opens it directly from your device — like opening it in an app.
Step 2
Your device does the work
The processing code runs inside this browser tab. No server ever receives your file.
Step 3
You save the result
The new file goes straight to your downloads. Close the tab and everything is gone.
Why people choose DocuVault
Private by default
No uploads means no copies of your files on someone else’s server.
Free, without catches
No sign-up, no watermarks, no “3 files per day” limits.
Fast on any device
No waiting for uploads and downloads — results appear in seconds.
Easy to use
One clear job per tool, with plain-language steps and help when you need it.
Frequently asked questions
Is DocuVault really free?
Yes. Every tool is free with no sign-up, no watermarks and no daily limits. DocuVault is supported by ads, and because your device does the processing, we don’t have expensive servers to pay for.
Are my files uploaded anywhere?
No. Files are opened and processed inside your web browser on your own device. They are never sent to our servers or anyone else’s, which is why DocuVault is safe for contracts, IDs, medical and financial documents.
Do I need to install anything?
No. DocuVault works in any modern browser — Chrome, Edge, Safari, Firefox and Samsung Internet — on Windows, Mac, Linux, Android, iPhone and iPad.
Does it work without an internet connection?
Yes, after your first visit. The tools are saved by your browser, so you can keep using them in airplane mode. Text recognition in languages other than English needs a one-time download of the language data.
Is there a file size limit?
There’s no fixed limit. Because your device does the work, the practical limit depends on its memory. Most computers and recent phones handle files of a few hundred megabytes.
Can I use DocuVault for work documents?
Yes. Because files aren’t uploaded, there’s no third party to vet and no data to leak. Always follow your organization’s policies for handling sensitive information.