Local PDF security workspace
Protect PDF
Encrypt a compatible PDF locally with a user-supplied password.
- Processing
- Browser only
- Account
- Not required
- Current guardrail
- One PDF · 100 MB · password stays local
- Output
- A new protected or unlocked PDF
No file upload, analytics, ads or external processing scripts in this workspace.
Local browser workspace
Choose source files
Run this operation in the browser and create a separate result file.
or choose files from this device
Local browser workspace
The source files are not changed and are not uploaded.Current compatibility
What this beta accepts
Password operations run locally through the bundled PDF engine and create a separate result.
| Input feature | Current behavior | Reason |
|---|---|---|
| Compatible source PDF | Accepted | The selected protection or decryption operation runs in this browser. |
| Password input | Used locally | The password is used for this operation and is not uploaded or stored by PigPDF. |
| Wrong password or damaged input | Rejected | No result is offered when qpdf cannot authenticate or parse the source. |
| Signatures and interactive structures | Review required | A rewritten PDF can change signature validity or unusual structures; verify the result. |
Before you use this tool
Questions and limits
Does my file leave this device?
No file content is sent by this tool. The active processing path runs in this browser and is covered by an automated egress test.
Does PigPDF change my source file?
No. The source stays unchanged and PigPDF creates a separate output file.
Which current limits apply?
One compatible PDF up to 100 MB. Use at least four password characters; the result is rewritten locally and signatures or unusual structures require review.