Split PDF
Merge PDF
Organize PDF
Extract Pages
Delete Pages
PDF Multi Tool
Compress PDF
Repair PDF
OCR PDF
PDF to Word
PDF to Excel
PDF to PowerPoint
PDF to Images
PDF to JPG
PDF to PNG
PDF to WebP
PDF to PDF/A
Rasterize PDF
Word to PDF
Excel to PDF
PowerPoint to PDF
Images to PDF
JPG to PDF
PNG to PDF
WebP to PDF
PSD to PDF
HEIC to PDF
EPUB to PDF
XPS to PDF
Rotate PDF
Add Page Numbers
Add Watermark
Crop PDF
Form Creator
Edit PDF
Unlock PDF
Sign PDF
Protect PDF
Add password protection to PDF files before sharing or storing them. Set an open password, optional owner password, and allowed actions.
- 1Upload
- 2Settings
- 3Process
- 4Download
Supported file types: .pdf. You can upload up to 1 files, and each file must be no larger than 25 MB.
Selected files (0)
Supported file types: .pdf. You can upload up to 1 files, and each file must be no larger than 25 MB.
Settings
Enter the passwords you want to use and choose which actions are allowed after the PDF is protected.
PDF viewers enforce permissions differently. For stronger restrictions, set an owner password that is different from the user password.
PDF encryption runs locally with the browser-based qpdf engine. Passwords are not uploaded or stored by the site.
Security & Privacy
- ✓ Your files are used only for this processing task.
- ✓ Your files are not uploaded to any server.
- ✓ You can delete the processed files at any time.
- ✓ Do not upload sensitive files on public devices, because data is stored in the browser cache.
- ✓ We are committed to ensuring the privacy and security of your data.
About Protect PDF
Protect PDF helps you control access to sensitive documents such as contracts, invoices, reports, forms, and personal records. You can require a password to open the PDF and set permissions for printing, copying, editing, or annotating where supported by PDF viewers. Encryption runs locally in your browser, so your passwords and files stay on your device.
About Settings
Open password is required to view the protected PDF. Owner password controls permission changes. Permissions let you decide whether printing, copying, editing, or annotations are allowed in compatible PDF apps.
How to protect a PDF?
Choose one or more PDF files from your device.
Enter an open password and confirm it. Add an owner password if you need permission controls.
Select the actions people should be allowed to perform after opening the file.
Click Process and save the encrypted PDF when it is ready.
Protect PDF FAQs
Are my passwords uploaded?
No. Passwords are used locally in your browser and are not sent to a server.
Can I protect several PDFs at once?
Yes. Add multiple PDFs and apply the same protection settings.
Can every PDF viewer enforce permissions?
Most modern PDF apps respect permissions, but behavior can vary by viewer.
What if I forget the password?
The protected PDF cannot be opened without the correct password, so keep it somewhere safe.
How to Select Files?
Click Choose Files, or drag and drop files into the upload area to add them.
Remove any selected file before uploading if it was added by mistake.
After selecting files, you can view each file's size and page count.
The upload area shows the total number of selected files and the combined file size.
File Selection FAQs
Which file formats are supported?
Supported file types are shown in the file selection area. Please make sure your files match the listed formats before adding them.
Are my files uploaded to a server?
No. Your files are processed locally in your browser and are not uploaded to any server.
Why is the button disabled?
The button may be disabled if no file is selected, the file format is not supported, the file size exceeds the limit, or the selected files exceed the maximum allowed number.
Can I select multiple files at once?
Yes, if this tool supports multiple files. You can select or drag multiple files into the tool, up to the maximum file limit.
Can I remove a selected file?
Yes. You can remove any selected file before processing.
Can I add files by URL?
No. This tool only works with files selected from your device. Files from URLs are not supported.
Is it safe to use?
Yes. The files stay on your device and are processed locally in your browser. Nothing is uploaded to a server.
Common Use Cases for Protect PDF
Add a password before sending personal records or business documents.
Limit changes to agreements, proposals, or signed paperwork.
Set permissions before distributing internal files.
Store PDFs with password protection in shared folders or cloud drives.
