Protect PDF with a Password
Encrypt a PDF with an opening password and optional permission settings. Process it in your browser and test the downloaded protected copy before sharing.
Add an opening password to a PDF before sharing it. Choose a strong password, optionally set a separate owner password and control common PDF permissions, then download the encrypted document.
- 01Choose your PDF
- 02Adjust your settings
- 03Save your result
This password will be required to open the PDF. Prefer a unique passphrase of 12 or more characters.
Use a separate owner password if you need one.
Use AES-256 unless you must support an older PDF reader.
Permission enforcement depends on the PDF reader and cannot prevent screenshots.
Included by default at the bottom-left corner. Uncheck to download without branding.
Keep your password safe. PixelOkay cannot recover a forgotten PDF password.
How to use this PDF tool with a password
Select a PDF from your device. Your file is processed locally in this browser.
Choose the settings that fit your document, then run the tool.
Save the processed PDF to your device and check the output before sharing.
Password protection for private documents
Encrypt a PDF before sharing sensitive paperwork, personal records, or business documents. Choose a strong password that you can share with the intended recipient through a separate channel.
- Use a unique password that is difficult to guess.
- Save the password securely before sending the protected file.
- Test the downloaded PDF and make sure the password opens it.
Frequently asked questions
Will the password be sent to PixelOkay?
No. The file and passwords are processed locally in your browser by a WebAssembly PDF engine, loaded from a public CDN on first use.
Can PixelOkay recover my password if I forget it?
No. Keep a safe record of the password. A forgotten open password may make the document inaccessible.
Does this prevent screenshots or all copying?
Password encryption requires a password to open the document. It cannot prevent someone from capturing content after opening it.
Does the recipient need a password to open the PDF?
Yes. The open password you create is required by compatible PDF readers to open the protected document.
What is an owner password?
It is a separate password for managing permissions in compatible PDF software. If you leave it blank, the tool uses the open password.
Does password protection prevent screenshots?
No. Encryption protects the file from being opened without the password, but it cannot prevent screenshots or all copying after a recipient opens it.
Can I restrict printing and copying?
Yes. You can configure common PDF permissions. Some readers may not enforce every restriction consistently.
What encryption is used?
The tool uses AES-256 by default, or AES-128 if you select compatibility mode, through a browser-side WebAssembly PDF engine.
Can PixelOkay recover a forgotten password?
No. Keep the password somewhere secure. A forgotten opening password may make the document inaccessible.
Will the password or PDF be uploaded?
The intended workflow is browser-side processing. Avoid using the tool on a device you do not trust, and verify the output before sharing.
Encrypt a PDF before sharing it
Use Protect PDF when you want a recipient to enter a password before opening a document. Password protection is useful for statements, invoices, contracts, personal records, reports, application documents, and other PDFs that should not be casually accessible. Choose a unique passphrase, confirm it carefully, and share it with the recipient through a different channel from the PDF itself.
Open password versus permissions password
The open password is required to view the encrypted document. An optional owner password can be used to manage document permissions in compatible PDF readers. You can also choose whether to allow printing, copying text, editing, commenting, form filling, accessibility extraction, and page assembly where supported. Permission restrictions are advisory in the PDF standard: different readers may enforce them differently, and they cannot prevent screenshots or every possible form of copying. Use an opening password when the goal is to keep the document contents confidential.
Choose a stronger password
- Use a long, unique passphrase rather than a short or reused password.
- Avoid names, birthdays, common phrases, or passwords used on other accounts.
- Store the password in a password manager or another secure place.
- Test the downloaded PDF by opening it and entering the password before sending it.
AES-256 encryption is selected for the protection workflow. Some existing PDFs may be encrypted already, damaged, or use unusual features that prevent them from being processed. Save a backup of the original and review the output before distributing it. Rewriting a PDF can also affect existing certificate-based digital signatures.
Local processing and privacy
PixelOkay is designed to process the file in your browser rather than uploading it to a processing server. The file and password stay in the current browser session during the operation. For sensitive documents, use a trusted device, avoid sharing the password in the same message as the attachment, and remember that PixelOkay cannot recover a forgotten open password. The optional PixelOkay watermark is enabled by default and can be switched off before encryption.
More PDF tools
Files are processed in this browser. Supporting libraries, workers and optional OCR models load from third-party CDNs. Files must be non-empty and no larger than 50 MB. Keep the original: editing can invalidate digital signatures, and rebuilding pages may not preserve forms, bookmarks or document metadata.
When to use Protect PDF with a Password
Use the available password workflow to create a separate protected copy of a PDF. An opening password and document permission settings serve different purposes.
How to use this PDF tool
- Select the PDF you want to protect, within the page’s 50 MB file limit.
- Enter and confirm an opening password, then review the optional owner password and permission controls.
- Review the watermark setting and create the protected copy.
- Download the result and confirm that it opens as expected in your recipient’s PDF reader.
A practical example
Before distributing a protected report, review the downloaded copy and confirm that the intended recipient can open it using the password you supplied.
Output and document limits
Permission controls depend on the PDF reader and cannot prevent all copying or screenshots after a document is opened. The tool cannot recover a forgotten password. An optional browser-side engine downloads when required; unsupported or damaged PDFs can fail.
Frequently asked questions
Are an opening password and permission settings the same?
No. The opening password is used to open an encrypted document. Permission settings describe allowed actions in readers that enforce them.
Can PixelOkay recover a forgotten password?
No. Keep your own record and retain the original document.
File processing and related workflows
Processing uses this browser. Supporting PDF libraries and optional engines can require network downloads from third-party CDNs. Keep original files and inspect downloaded results. Read the privacy policy or contact PixelOkay.