A Pioneering Software for Protecting PDF Documents
Protect PDFs from unauthorized use, sharing, and editing using our reliable tool for password protection, encryption, & setting PDF restrictions.
Supports PDF, DOC, DOCX, JPG, PNG
Files stay private
This tool saved me! It allowed me to password-protect PDFs in batches quickly, easily, and safely.
John Thompson
Legal assistant, uses pdf.net daily
Drop file here to protect
Supports PDF, DOC, DOCX, JPG, PNG
Files stay private
Start editing your PDF
I managed to change text, annotate the file, reorganize pages, and convert my document from and to PDF, all with a single editing tool. Just amazing.
Latoya Jenkins
Head of Accounting
How to Add Page Numbers to a PDF
1
Upload your PDF file
2
Encrypt, password-protect, and lock the document
3
Download the secured PDF file
Why people prefer pdf.net
Simple and easy for daily use
Our online PDF editor features a clean, intuitive, and user-friendly interface designed for amateurs and professionals alike. You can navigate it with ease and edit your PDF file, even if you’ve never done it before.
All-in-one PDF editor
Our editor offers a robust and comprehensive set of features that allow you to customize your documents, merge them, sign them, and much more. No need to transfer your files between several applications anymore.
Keeping formatting without issues
No more messy documents and inconsistent formatting across multiple systems or devices. Our online PDF editor is cross-platform compatible and maintains uniformity whether you’re using a PC, MacOS, smartphone, or tablet.
People all over the world trust pdf.net to edit their docs
I used many online editors, but this is the first one that consistently maintained formatting when I converted PDF into DOC and PNG files.
Astrid Larsen
Freelance graphic designer
I used many online editors, but this is the first one that consistently maintained formatting when I converted PDF into DOC and PNG files.
Astrid Larsen
Freelance graphic designer
This editor instantly became my go-to for PDFs because it makes adding and rewriting text easy and intuitive.
Rajesh Patel
Student at UCLA
I had a long PDF file that I needed to split into ten shorter documents. This online PDF editor helped me do that in under five minutes.
Wei Zhang
Provides tax consulting services
I had half an hour to edit and sign one PDF before sending it to the client, and this tool saved my day.
Maria Hernandez
Real estate agent
Frequently asked questions
How do I make a PDF non-editable?
To make a PDF non-editable, you can protect it with a password using our software. All you need to do is upload your file, choose a password, and it will be encrypted with strong AES-128 protection to prevent editing by anyone without the password.
How can I protect a PDF with a password?
You can protect a PDF with a password by uploading your file to our website, opening the lock PDF tool, typing in your password, and locking your PDF before downloading.
What encryption level does pdf.net use for PDF protection?
Pdf.net uses the highest encryption level for PDF protection with AES-128, which means it boasts a strong cryptographic key that is impossible to breach.
Can I set different permission levels for my protected PDF?
While PDF format can set editing, printing, or copying restrictions, many modern PDF viewers ignore these settings. Encrypt your PDF with a password to protect it from unauthorized access.
Is it possible to prevent others from copying or printing my PDF?
Yes, it is possible to prevent others from copying or printing your PDF. To do this, you can encrypt and lock it with the help of pdf.net by setting a strong passcode.
Can I remove the password from a protected PDF later?
Yes, you can remove the password from a protected PDF later, but only if you remember it; otherwise, it’s impossible to do so.
Can I protect multiple PDFs at once?
Yes, you can protect multiple PDFs by uploading them to our service one at a time. You can encrypt every file individually and set a unique password for each, ensuring secure protection for all your documents.
Is there a file size limit for protecting PDFs?
Yes, there is a file size limit for protecting PDFs. Each file can be up to 100 MB in size. You can upload and encrypt each PDF individually, ensuring it falls within the size limit.
Can I unlock a PDF if I forget the password?
No, you cannot unlock a PDF if you forget the password. Our tool uses strong AES-128 encryption that makes protected files unbreachable and non-decryptable unless you know the passcode.
Is PDF protection compatible with all devices and operating systems?
Yes, PDF protection is compatible with all devices and operating systems. All you need is a computer or mobile device to access our website and secure your files hassle-free.
Will the protected PDF work with any PDF reader?
Yes, the protected PDF will work with any PDF reader. Still, you need to ensure that your reader is up to date and not damaged or corrupted.
Can I protect a PDF without downloading any software?
You can protect a PDF without downloading any software. Our tool doesn’t require you to install any programs; you only need to access our website and lock your files using our platform, which doesn’t take more than a few minutes.
Does protecting a PDF affect its quality or formatting?
No, protecting a PDF does not affect its quality or formatting if you use pdf.net to secure your files. The software will completely preserve their quality and formatting, so you won’t have to worry about getting a damaged or different file.
Can I edit a PDF after protecting it?
Yes, you can edit a PDF after protecting it, provided you know the password to access the editing feature. Besides the password-protection tool, we also offer a PDF editor that allows different modifications (e.g., replacing text, highlighting, and adding annotations) that you can use to tweak your files.
Is the PDF protection permanent, or can it be reversed?
PDF protection is permanent and cannot be reversed unless you know the password you used to lock the document. If you do know it and want to remove it, you can use our unlock tool to do so.