Password Protect PDF
Password Protect PDF writes an encrypted copy using AES-256. Keep the password yourself; there is no account recovery if you forget it.
Privacy and offline checks
Document processing runs locally in supported PDFForge workflows. This panel is a diagnostic view; it cannot prove that no data left the device.
Observed resource activity
0 observations in this page session · 0 need inspection
Resource timing is unavailable in this browser. Use the independent checks below.
Page timing and the active service worker report different surfaces and may observe the same request. Worker activity can be incomplete; WebSockets, request bodies and extensions are outside this view. The latest 60 sanitized observations stay in memory only. URLs, filenames, query strings, document content and byte counts are not recorded here.
Verify independently in DevTools
- Use a clean browser profile and synthetic documents. Open Network in DevTools and enable Preserve log.
- Prepare offline below. Switch Network to Offline, then reload the saved workspace and select a new file.
- Inspect, redact, run output checks and download. Inspect failed requests and request payloads, including worker requests. A same-site request can still transmit data.
- Inspect Application or Storage. Cache Storage should contain public app assets and setup records only. Document recovery and content telemetry are disabled; recipe settings are saved only after opt-in.
Offline readiness
Full workspace not prepared for offline use
English OCR not prepared for offline use
Prepare while connected to save the workspace, tools, fonts and workers. English OCR is optional. Only public app assets are saved; documents, outputs and passwords are excluded. Browser storage can be cleared or evicted. Check saved assets before disconnecting and prepare again after an app update.
Checking saved app assets…
Open saved workspaceReady for local work · One heavy job at a time in this tab
Drop your PDF file here, or browse
Supports standard PDF documents • Up to 100 MB
Private by design. Document processing runs in this browser. PDFForge has no document upload API.
How it works
How Password Protect PDF works
Password Protect PDF writes an encrypted copy using AES-256. Keep the password yourself; there is no account recovery if you forget it.
Guided steps
How to use Password Protect PDF
- 1Select an unlocked PDF.
- 2Enter and confirm an open password.
- 3Protect the file locally.
- 4Download the encrypted PDF and store the password separately.
In this tab
What stays in this browser
The file stays in this tab.
- What this tool reads
- One PDF and the password you type. The password is not stored.
- What the download contains
- An AES-256 protected PDF.
Questions
Password Protect PDF FAQs
Is this really AES-256?
Yes. PDFForge uses pdf-lib-encrypt with AES-256. We do not claim AES-256 for other algorithms.
Where is the password stored?
Only in memory for this operation. It is not written to logs, IndexedDB, or the service worker cache.
Can I set owner and user passwords separately?
This tool applies the open password you enter. Distinct permission passwords are not offered.
Continue locally
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