Local password encryption

Password-based PDF encryptionBrowser-based password handling50MB per file

Protect PDF files with passwords.

Apply password protection before sharing a PDF. Set owner and open passwords and export encrypted output in a local browser workflow.

Input
One PDF
Runtime
Browser tab
Output
Encrypted PDF
Protect PDFRedact PDFFlatten PDFMerge PDFs

Drop a PDF to protect

Inspect the PDF, set an open password, optionally set a separate owner password, and export encrypted output locally.

Local processing · up to 50MB per file
How to use Protect PDF
  1. 01

    Select document

    Pick the PDF you want to secure. The file is loaded into browser memory for local processing.

  2. 02

    Set security policy

    Define your password and permissions. The encryption workflow runs on your device in your browser session.

  3. 03

    Encrypt and download

    The document is rewritten with encryption locally and prepared for direct download.

Encryption should make password handling and output ownership clear.

Password handling

Your passwords are handled locally during the session to build the protected PDF export.

Local cryptography

Encryption logic runs locally in the browser using your device resources instead of a remote server.

Local export pipeline

The encrypted PDF is generated in browser memory and prepared for direct download.

Privacy first

Encrypt PDFs locally so the file and password do not need to be sent to a third-party processing service.

Instant encryption

Encryption starts as soon as you select a file, using your device resources for the workflow.

Password control

Passwords are handled locally during the session, so forgotten credentials cannot be recovered by DocuStitch later.

Password encryptionLocal processingNo-log architectureLocal RAM

DocuStitch Security Core v4.2 - Local WebAssembly workflow - www.docustitch.app

Secure sensitive documents with local PDF encryption

Protecting sensitive documents such as tax returns, medical records, or legal contracts often starts with encryption. Many tools require uploading the original file before securing it. DocuStitch removes that dependency for standard workflows.

Protect PDF applies password-based PDF encryption while running locally in your browser session. Password handling and document processing stay on your device during use.

This local-first design reduces exposure to third-party processing services and keeps the route aligned with the capabilities currently implemented in the engine.

Local password protection

Apply local password-based PDF encryption without uploading the source file.

On-device cryptography

Encryption occurs in browser memory, so file and password stay local during processing.

No file upload

Standard encryption workflows can be completed without a third-party upload step.

Password control

Define owner and optional open passwords directly in the local workflow.

Frequently asked questions about Protect PDF
Will you store my password?

No. The workflow is designed to handle passwords locally during the session.

What happens if I forget my password?

Because passwords are not stored by DocuStitch, forgotten passwords cannot be recovered after the session.

What encryption level is used?

The current route uses local password-based PDF encryption. The page no longer claims granular reader permission enforcement that is not fully implemented in the engine.

Does it work for scanned PDFs?

Yes, it works with valid PDF documents including text-based and scanned files.