Unlock PDF and Protect PDF from Copying in Ubuntu easily

Unlock PDF and Protect PDF from Copying in Ubuntu

DocHub is a powerful online platform designed for seamless document management, enabling users to edit, sign, and distribute their files efficiently. With its deep integration with Google Workspace, our editor enhances the document workflow by allowing users to import, export, and modify PDFs directly within their familiar Google apps. Whether you're using iOS 17, iOS 18, or iOS 19, DocHub offers a user-friendly experience for managing your documents for free.

Follow the steps to unlock and protect your PDF

Open the DocHub website and log in to your account.
Upload the PDF document you wish to unlock.
Access the editing tools available on our platform to remove any restrictions from the PDF.
Once unlocked, use the protection features to prevent copying by selecting the appropriate settings to secure your document.
Review your changes to ensure everything is set according to your preferences.
Finally, choose to download, export, or print your secured PDF document, or share it directly via email.

Experience the convenience of document management with DocHub today!

PDF editing simplified with DocHub

Seamless PDF editing

Editing a PDF is as simple as working in a Word document. You can add text, drawings, highlights, and redact or annotate your document without affecting its quality. No rasterized text or removed fields. Use an online PDF editor to get your perfect document in minutes.

Smooth teamwork

Collaborate on documents with your team using a desktop or mobile device. Let others view, edit, comment on, and sign your documents online. You can also make your form public and share its URL anywhere.

Automatic saving

Every change you make in a document is automatically saved to the cloud and synchronized across all devices in real-time. No need to send new versions of a document or worry about losing information.

Google integrations

DocHub integrates with Google Workspace so you can import, edit, and sign your documents directly from your Gmail, Google Drive, and Dropbox. When finished, export documents to Google Drive or import your Google Address Book and share the document with your contacts.

Powerful PDF tools on your mobile device

Keep your work flowing even when you're away from your computer. DocHub works on mobile just as easily as it does on desktop. Edit, annotate, and sign documents from the convenience of your smartphone or tablet. No need to install the app.

Secure document sharing and storage

Instantly share, email, and fax documents in a secure and compliant way. Set a password, place your documents in encrypted folders, and enable recipient authentication to control who accesses your documents. When completed, keep your documents secure in the cloud.

Drive efficiency with the DocHub add-on for Google Workspace

Access documents and edit, sign, and share them straight from your favorite Google Apps.

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Got questions?

Here are some common questions from our customers that may provide you with the answer you're looking for. If you can't find an answer to your question, please don't hesitate to reach out to us.

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How do I lock a PDF to prevent copy and paste?

Open a file in Acrobat and choose Tools Protect. Select whether you want to restrict editing with a password or encrypt the file with a certificate or password. Set password or security method as desired. Click OK and then click Save.

How do I password protect a PDF in Ubuntu?

The first option is to use the pdftk tool. This tool has many capabilities such as merging PDF files, splitting PDF pages into new documents, and even repairing corrupted PDF documents. Its also possible to set passwords for PDF documents using pdftk. There are two types of passwords.

How to unlock a PDF file in Linux?

CLI Method: Remove password from PDF file using qpdf command You can use the qpdf utility in the terminal to remove the password from the PDF file (if you know it). You may have to it first.

How do you password protect a file in Ubuntu?

How to Password Protect Folders on Ubuntu Open the Apps Menu, search for GNOME EncFS, and launch it. Tap on the + (Plus) icon in the toolbar. Select an appropriate option for the mount directory. Under Password, enter the password you want to use to encrypt the folder twice. Hit Create to create an encrypted folder.

How do I make my PDF password protected?

Add a password to a PDF Open the PDF in Acrobat. Do any of the following: Go to All tools Protect a PDF Protect with password. In the Protect Using Password dialog box, select if you want to set the password for viewing or editing the PDF. Type and retype your password. Select Apply.

How to put a password on a PDF in Ubuntu?

Using qpdf This tool reads the input PDF file, applies the transformations specified by the arguments to the file in memory, and saves the result to the specified output file. The first argument of the encrypt option is the user password, and the second argument is the owner password.

How do I password protect a PDF completely?

Within the Save As dialog box that appears, choose Permissions from the right-hand menu. (See image below.) Add a password and set a desired encryption level. Enter a name and select Save to create a new PDF document with the security settings added to it.

How do you unlock a PDF that Cannot be copied?

Open the secured PDF in Acrobat and follow these steps: Click File on the top toolbar and find Properties. Click the Security tab. Use the drop-down menu to choose No Security. Enter the password and click OK. Press OK again. Save the document to remove the security password.

See why our customers choose DocHub

Great solution for PDF docs with very little pre-knowledge required.

"Simplicity, familiarity with the menu and user-friendly. It's easy to navigate, make changes and edit whatever you may need. Because it's used alongside Google, the document is always saved, so you don't have to worry about it."

Pam Driscoll F
Teacher

A Valuable Document Signer for Small Businesses.

"I love that DocHub is incredibly affordable and customizable. It truly does everything I need it to do, without a large price tag like some of its more well known competitors. I am able to send secure documents directly to me clients emails and via in real time when they are viewing and making alterations to a document."

Jiovany A
Small-Business

I can create refillable copies for the templates that I select and then I can publish those.

"I like to work and organize my work in the appropriate way to meet and even exceed the demands that are made daily in the office, so I enjoy working with PDF files, I think they are more professional and versatile, they allow..."

Victoria G
Small-Business

Security and compliance

At DocHub, your data security is our priority. We follow HIPAA, SOC2, GDPR, and other standards, so you can work on your documents with confidence.

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