Lock PDF and Compress PDF in iOS easily

How to Lock PDF and Compress PDF in iOS with DocHub

DocHub is a powerful platform designed to streamline document editing, signing, and distribution. With its intuitive interface, users can easily manage their documents online for free. Whether working on iOS 17, iOS 18, or iOS 19, our editor makes it simple to lock and compress PDFs, ensuring your files are secure and optimized for sharing. Experience seamless integration with Google Workspace, allowing you to import and export documents effortlessly.

Follow the steps to Lock and Compress your PDF

Open the DocHub website and log in to your account.
Upload the PDF file you wish to lock and compress from your device or Google Drive.
Once the PDF is open in the editor, locate the option to set document permissions. This will allow you to lock the PDF for further editing.
After securing the PDF, navigate to the option for file optimization. Select the compression settings that best suit your needs.
Once you've made your selections, apply the changes and wait for the document to process.
Finally, download the locked and compressed PDF to your device, or share it directly via email or other platforms.

Start using DocHub today to simplify your document management process!

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.

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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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Can you lock a PDF on iPhone?

Use these steps to password protect a PDF on an iPhone. Click the blue Select a file button to navigate to the file and upload it. A screen will appear displaying your file and a field for you to type a password. Create a strong and unique password, and then retype it in the second box to confirm. How to password protect a PDF on an iPhone | docHub docHub acrobat hub password-pro docHub acrobat hub password-pro

How do I protect a PDF with security?

How to secure a PDF file using Word. Open the document you would like to password-protect. Click File. Select Info. Select Protect Document. From the dropdown menu, choose Encrypt with Password. Type a password, then click OK. Type the password again to confirm it, then click OK.

How do I remove security restrictions from a PDF?

How to remove password from PDF Open the PDF in Acrobat Pro on Windows or Mac. Choose Tools Encrypt Remove Security. If the document has a Document Open password, click OK to remove it. If the document has a permissions password, type the correct password in the Enter Password box and then click OK.

How do I convert a PDF to a secure PDF?

How can I convert PDF files to secure PDF? Use the file selection box to select the PDF files you want to convert to secure PDF files. Start converting your PDFs to secure PDF by clicking on the Convert button. Save the converted PDF files as secure PDF by using the download button.

How do I compress a PDF with security?

Optimize the file size of your PDF Open a PDF in Acrobat. Click the Optimize PDF icon from the menu on the right. Click Reduce File Size in the toolbar. On a PC, set the version compatibility and click OK . Choose a location to save your file and click Save. Protect and compress your PDF documents - Creative Cloud - docHub docHub.com learn acrobat web docHub.com learn acrobat web

How do I lock a PDF from editing on my iPad?

How to password-protect a PDF on an iPad. Use any browser to navigate to docHubs Password Protect PDF online tool. Click the blue button labeled Select a file, or drag and drop your PDF into the selection box. Type a strong and unique password. Retype the password to confirm it. Click Set Password. How to password-protect a PDF on an iPad from anywhere | docHub docHub.com acrobat hub password-prot docHub.com acrobat hub password-prot

How do I flatten and secure a PDF?

With Acrobat Pro, follow the steps below to flatten your PDF: Make a copy of your PDF. Choose Advanced Print Production Flattener Preview. Adjust the Raster/Vector balance. Select Convert All Text To Outlines. Deselect Clip Complex Regions. Click Apply to flatten the PDF. Close the Flattener Preview dialog box.

How do I compress a PDF in iOS?

Tap the Edit button in the bottom right corner of the screen. This will allow you to add comments, fill and sign, organize pages, and more. When youre done making changes to your PDF, tap the three-dot menu in the top-right corner of the screen. Select Compress PDF. Compress PDF files on an iPhone - best ways to reduce size docHub acrobat hub how-to-comp docHub acrobat hub how-to-comp

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

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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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Lock PDF and Compress PDF in iOS in no time

How to Lock PDF and Compress PDF in iOS with DocHub

Follow the steps to Lock and Compress your PDF

PDF editing simplified with DocHub

Drive efficiency with the DocHub add-on for Google Workspace