GekiPDF encrypts your PDF with AES-256 using a password you set. Anyone opening the file must type the password, which protects both forwarding and cloud storage.
The password never leaves the request and is not stored; the encrypted file is deleted within an hour like every other output.
How to protect pdf
- Upload the PDF.
- Type a password (4+ characters).
- Press Protect PDF.
- Download the encrypted file and store the password safely.
Specifications
| Max file size | 50 MB |
|---|---|
| Encryption | AES-256 (PDF 2.0 R6) |
| Watermark | Never |
Frequently asked questions
What encryption is used?
AES-256 through pikepdf/QPDF, the same standard used by desktop PDF suites.
I forgot the password — can you recover it?
No. Nobody can; that is what makes the encryption meaningful. Keep a copy of the password.
Does protection stop printing?
The password blocks opening. Print/copy permissions are a separate PDF setting and are not the same as encryption.
What encryption does a free PDF password tool use?
GekiPDF writes AES-256 (PDF 2.0, revision 6) with pikepdf - verified with qpdf --show-encryption, which reports AESv3 and refuses to open the file without the password.
Can someone crack a password-protected PDF?
Short passwords can be brute-forced offline. Use 12+ characters, and remember owner-password restrictions (no printing, no copying) are advisory and easy to bypass - encryption is what actually protects the content.