Encrypt a PDF with a password so it can only be opened by authorised recipients. Processed entirely in your browser.
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10 uses remaining today
Drop a PDF here or browse
One PDF file · Max 40 MB · for higher limits
Protect PDF encrypts your document with a password using the PDF Standard Security (RC4-40) algorithm. Once protected, anyone who tries to open the file will be prompted for the password you chose. The encryption runs entirely in your browser — your file is never uploaded to any server.
Upload a PDF, enter a password, then click Protect & Download. The tool applies PDF standard encryption (RC4 40-bit, the universal format supported by every PDF reader including Adobe Acrobat, Preview, Chrome, and mobile apps). The protected PDF downloads automatically. Share it and give the recipient the password separately.
Upload your PDF
Drop your PDF or click to browse. The file stays in your browser and is never sent to any server.
Set a password
Enter the password you want to use. The owner password controls editing and copying permissions; the user password is required to open the file.
Choose permissions (optional)
Optionally restrict printing, copying text, or editing to control what recipients can do with the document.
Encrypt
Click "Protect PDF". The document is encrypted using AES-256 directly in your browser.
Download
Save the password-protected PDF to your device. Share it knowing only those with the password can open it.
Confidential Contracts
Password-protect a contract before emailing it so only the intended recipient can open and read the terms.
Financial Statements
Secure quarterly or annual financial reports before sharing with investors or auditors to prevent unauthorized access.
Medical Records
Protect patient records or lab results sent digitally to comply with healthcare privacy regulations.
Academic Submissions
Lock exam papers, grade sheets, or dissertation drafts before distributing to examiners to prevent early access.
Property Documents
Protect deeds, mortgage paperwork, and property survey PDFs when sharing with solicitors or estate agents.
Email Attachments
Add a password to any sensitive PDF attachment so it remains protected even if the email is forwarded unexpectedly.
Universal Compatibility
The generated password-protected PDF opens in every major reader — Adobe Acrobat, Preview, Chrome, and all mobile PDF apps.
Password Strength Meter
A live strength indicator guides you to choose a robust password, from "Weak" to "Very Strong," before encrypting.
Confirm Password Field
A confirmation field catches typos before encryption so you never lock yourself out of the document.
Completely Private
Encryption is performed entirely in your browser — the document and password are never transmitted to any server.
One-Click Encryption
Enter a password and click one button to encrypt and download the protected PDF — no configuration needed.
Free to Start — Sign Up for More
Use free with no account for files up to 40 MB. Sign up free to raise your limit to 80 MB, or upgrade to Pro for 250 MB per file.
Also Known As
Merge PDF
Combine multiple PDF files into one. Drag to set the page order you want.
Split PDF
Separate one PDF into multiple files — by page range or every page.
Compress PDF
Reduce PDF file size while keeping the best possible quality.
Remove Pages
Select and delete specific pages from your PDF document.
Extract Pages
Extract selected pages from a PDF and save them as a new PDF file.
Organize PDF
Reorder, rotate and delete pages inside a PDF — all in one place.
Trusted Worldwide
iLoveDocsTools is used by students, professionals, and businesses across the United States, Canada, United Kingdom, Australia, India, and more than 100 other countries. All tools are browser-based and process files privately — your files never leave your device. Free to use, with Pro plans for unlimited access.
All processing happens directly in your browser. Your documents are never sent to any server — complete privacy guaranteed for users in the USA, Canada, UK, and worldwide.
Every tool on iLoveDocsTools is free to use. Need more? Upgrade to Pro for unlimited usage, priority access, and no daily limits. Trusted by students, freelancers, and teams across North America and Europe.
Whether you are on a Mac, Windows PC, iPhone, or Android in New York, Toronto, London, or Sydney — our tools work instantly in any modern browser.
Looking for free PDF tools in the USA? Free document converters in Canada? Online PDF editors in the UK or Australia? iLoveDocsTools offers 70+ free tools — merge PDF, split PDF, compress PDF, convert Word to PDF, Excel to PDF, JPG to PDF, and many more — all free, all instant, all private. No watermarks. No file size limits. Just free tools that work.