Unlock PDF and Compress PDF on Smartphone phone

Unlock PDF and Compress PDF on Smartphone

DocHub is an online platform that streamlines document editing, signing, distribution, and forms completion, making it easier than ever to manage your PDFs on-the-go. Whether you’re using a Samsung Galaxy S24 Ultra, Apple iPhone 15 Plus, Xiaomi Redmi Note 12 Pro (Global), Google Pixel Pixel 9 Pro Fold, or Motorola Moto G Power 5G (2025), our editor allows you to unlock and compress PDFs for free directly from your web browser, ensuring a hassle-free experience.

Follow the steps to unlock and compress PDFs on your smartphone.

Open the platform's website in your smartphone’s web browser and log in to your account.
Navigate to the section where you can upload your locked PDF document from your device or cloud storage.
Once uploaded, select the option to unlock the PDF. This will typically involve entering any required password or confirming your intent to unlock.
After the document is unlocked, look for the option to compress the PDF. This feature will help reduce the file size without sacrificing quality.
Once the compression is complete, review your document to ensure it meets your needs.
Finally, download the processed PDF back to your device, or share it directly via email or cloud services.

Start using our platform today for free and simplify your PDF management!

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 remove signature and unlock a PDF?

To remove your signature, right-click the signature and then choose Clear Signature. If you got a signed PDF, you can request the signer to remove the signature and share the PDF or send an unsigned copy of the PDF.

How do I unlock a PDF on my phone?

How to open a password-protected PDF file in Android. Open the docHub Reader app. Navigate to the location of the PDF file on your Android device. Tap the PDF file. You will be prompted to enter the password. Type the password for the PDF and press OK. If the password is correct, the PDF file will open.

How do I copy and unlock a PDF?

How to copy text from a secured PDF 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.

How to convert password protected PDF to normal PDF in Android?

Removing PDF passwords on an Android phone Use the PDF viewer you have on your phone to open your PDF. To access the file, enter the password. Tap the Menu icon in the viewer. Then, tap on Share and locate the Share icon and choose Print to PDF to save the file in that location without a password.

How do I remove the password from a PDF preview?

To remove PDF password with Preview, follow the instructions. Open your password-protected PDF with Preview (double-click the file). Enter the password. Go to File Export. Click Permissions. Check the boxes corresponding to the permissions you want to grant. Create and enter an Owner Password. Click Apply.

How do I remove the lock from a PDF?

Then, follow these steps: 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 remove permission lock from 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.

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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Unlock PDF and Compress PDF on Smartphone mobile device

Unlock PDF and Compress PDF on Smartphone

Follow the steps to unlock and compress PDFs on your smartphone.

PDF editing simplified with DocHub

Drive efficiency with the DocHub add-on for Google Workspace