Add Watermark to PDF and Encrypt PDF on Mobile phone

Add Watermark to PDF and Encrypt PDF on Mobile using DocHub

DocHub is an innovative platform that simplifies document editing, signing, and management. Whether you’re using a Samsung Galaxy A15 5G, Apple iPhone 15 Pro, Xiaomi Redmi Note 12 (India), Vivo V30, or Motorola Moto G Stylus (2025), our editor allows you to easily add watermarks and encrypt your PDFs on mobile. With a seamless integration with Google Workspace, users can import, export, and modify documents effortlessly, ensuring your workflows remain efficient and interactive.

Follow the steps to add a watermark and encrypt your PDF on mobile

Open your web browser and navigate to the document editing platform. Log in with your credentials to access your files.
Upload the PDF document you wish to edit by selecting the upload option and choosing the file from your device.
Locate the option to add a watermark. Customize the text and appearance of the watermark to suit your document's style.
Once satisfied with the watermark, proceed to the encryption features. Select the option that allows you to secure your PDF with a password.
Enter your desired password, ensuring it is strong yet memorable. Confirm the password to finalize the encryption process.
Review your document to ensure all changes are applied correctly, then save the modifications.
Finally, download or export the edited PDF to your device. You can also share it directly through email or other platforms.

Start using our platform today for free and enhance your document management experience!

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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How do I add a watermark to a locked PDF?

How to watermark a PDF using docHub Open your document in docHub and click Edit PDF in the sidebar. Editing a PDF to insert a watermark. Click Watermark in the top toolbar and then select Add Select your watermark formatting options and press OK Save and/or print your watermarked document.

How do I watermark a document as confidential?

Insert a watermark On the Design tab, select Watermark. Choose a pre-configured watermark, like DRAFT, CONFIDENTIAL, or DO NOT COPY. For placing a logo or image, Select Watermark Custom Watermark Picture watermark Select Picture. On the same menu you can create a custom text watermark.

How to add watermark in PDF on phone?

How to Add Watermark to PDF on Mobile Open the web browser of your choice on your mobile device to Add Watermark to PDF on Mobile. Go to the DocHub website and Log in to your account. After you finish your registration, add the file you need to change by finding it on the mobile device or utilizing a cloud storage link.

How do I add a permanent watermark in a PDF?

Add or replace a watermark, with an open document Choose Tools Edit PDF Watermark Add. (Optional) To apply the watermark selectively to individual pages, click Page Range Options. Specify the watermark: To change the size of an image watermark, do one of the following:

How do I add a watermark to a PDF on my Iphone?

How to Add Watermark to PDF for iOS version Enter your PDF file and click , then choose Add Watermark; You can choose to add Text or Image watermark on the top of your keyboard: 1) Text: Directly type in the text box. Click Done twice on the top of your screen to add the watermark to your document.

How do I add a watermark to a secured PDF?

0:42 3:27 How to add a permanent DO NOT DISTRIBUTE watermark to a PDF YouTube Start of suggested clip End of suggested clip To red click ok were going to leave the opacity set at about a third but were going to change theMoreTo red click ok were going to leave the opacity set at about a third but were going to change the position to be across the page. So we can see what that looks like by clicking on the preview.

How to add watermark to PDF without Acrobat?

Heres how: Open the file you wish to watermark in Microsoft Word. Click the Insert button and choose Text Box. Type in the text or image you want to use. Click the Design tab and select Watermark. Finally, save your document as a PDF by going to File Save As PDF.

How do I encrypt a PDF on my phone?

How to set a password to protect PDFs on Android. Navigate to the password protection page in your preferred browser using your Android device. Click the button labeled Select a file to choose and upload your PDF from your Android. Create and enter a strong password, then retype it to confirm.

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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