PDF4U

Free PDF tools that process files in your browser, never on a server

#5 in Utilities
Utilities
Productivity
Free
Launched 1 Nov 2026

Verified clicks, 30 days: 0
Votes: 0
Score: 15.0 pts
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About

PDF4U is a collection of free online PDF tools for merging, splitting, compressing, converting, rotating, numbering, watermarking, signing and protecting PDFs. Every tool runs inside your web browser using your device's processing power, so your files never leave your computer or phone.

You can organize PDFs by reordering, rotating and removing pages with drag and drop. Convert between PDF and image formats, add page numbers and watermarks, crop pages, draw or type signatures, and protect files with AES-256 password encryption. You can also repair damaged PDFs and remove passwords from files you own.

There is no sign-up required, no daily limits, no file size restrictions and no watermarks added to your work. Because processing happens locally in your browser, sensitive documents like contracts, ID scans and medical records remain private.

PDF4U processes all files in your browser rather than uploading them to servers. The site uses a strict security policy that blocks it from connecting to other websites while you work. You can verify this yourself using your browser's developer tools to confirm no data leaves your device.

Problem: Most online PDF tools upload your documents to their servers, exposing sensitive files like contracts, ID scans and medical records to privacy risks.
Solution: PDF4U runs entirely in your browser, processing files on your device with no uploads to servers. Your documents stay private and you can verify this using browser developer tools.

Updated today