Lock PDF and Compress PDF in Microsoft’s mobile OS easily

How to Lock PDF and Compress PDF in Microsoft's Mobile OS with DocHub

DocHub is a powerful online platform that simplifies document editing, signing, and distribution. With robust features that integrate seamlessly with Google Workspace, our editor empowers users to manage their documents efficiently, whether you’re working on iOS 17, iOS 18, or iOS 19. By utilizing DocHub, you can easily lock and compress your PDFs, ensuring that your files are secure and optimized for sharing.

Follow the steps to lock and compress your PDF file:

Open the DocHub website in your mobile browser and log in to your account.
Upload the PDF document you wish to lock or compress by selecting the appropriate option in the editor.
Once the document is uploaded, navigate to the settings or options menu to find the locking feature. Here, you can set permissions to restrict access.
After securing your document, look for the compression tool. This will allow you to reduce the file size without compromising quality.
Once you’ve locked and compressed your PDF, you can choose to download the optimized file, share it via email, or print it directly.

Experience the convenience of managing your documents online for free 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 compress a locked PDF?

Open a PDF in Acrobat. Open the Optimize PDF tool from the pane on the right. Click Advanced Optimization in the toolbar at the top and specify your compression needs, then click OK. Select a location to save your file and click Save.

How do I compress a PDF on Microsoft?

Open Microsoft Edge or any other internet browser. Navigate to the Acrobat online PDF compressor. Click Select a File and locate your PDF, or simply drag and drop it to the Compress PDF field. Once your file is compressed, download your file and be sure to see how many bytes the compressor shaved off.

How do you remove lock from PDF document?

How to unlock a PDF to remove password security: Open the PDF in Acrobat. Use the Unlock tool: Choose Tools Protect Encrypt Remove Security.

How do I convert a locked PDF?

If your PDF file has an owner password that restricts editing, printing, or copying, you can remove it by using a PDF reader such as docHub or Foxit Reader. - Open the PDF in a PDF reader like Acrobat Pro on your laptop or PC. - Click on Choose Tools Encrypt Remove Security.

How to reduce file size of locked PDF?

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 personal computer, set the version compatibility and select OK . Choose a location to save your file and click Save.

How do I force compress a PDF?

How to compress a PDF to 300kb or less Open the Tools center and select the Optimize PDF Tool. Choose the file you want to compress. Select Reduce File Size in the top menu. Pick your options and file version compatibility. Rename and save the file.

How to save a PDF reduced size?

Open a single PDF, or select one or more PDFs in a PDF Portfolio. Choose the hamburger Menu (Windows), or the File menu (macOS) Save As Other Reduced Size PDF.

How do I reduce the MB of a PDF on my phone?

You can also reduce the size of a PDF file with the free docHub online PDF compressor, which you can access on your mobile Android device wherever you go. Simply go to your browser to access the tool. You can change the megabyte (MB) size of your PDF within seconds with this efficient online resource.

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..."