How can I sign a PDF on my mobile phone for free?

Upload your PDF to VelaPDF, upload your .p12 or .pfx certificate, enter the certificate password, sign the document, and download the completed PDF.

Is VelaPDF's mobile PDF signer secure?

Yes. VelaPDF uses encrypted connections for secure document processing. Uploaded files are stored temporarily and automatically deleted after processing.

Are digitally signed PDFs legally valid?

Yes. Digitally signed PDFs are legally recognized in many countries. Acceptance depends on local regulations, the document type, and the receiving organization.

Can I sign PDFs on an iPhone or Android device?

Yes. VelaPDF works on Android phones, iPhones, tablets, Windows PCs, and Macs through any modern web browser without requiring app installation.

Can I sign PDFs on mobile without printing them?

Yes. VelaPDF lets you digitally sign PDF documents directly from your mobile browser, eliminating the need for printing, scanning, or manual paperwork.

Sign PDF on iPhone Online Free – Add Signature Easily

Sign PDF on mobile online has become one of the easiest ways to complete important documents without waiting to get back to your computer.

You can sign documents on mobile by uploading your document, adding your digital signature, and downloading the signed PDF directly from your browser.

With VelaPDF Sign PDF, the whole process is quick and secure. It lets you sign PDF mobile files and add signature to PDF on mobile without installing an app, making it easy to handle important documents wherever you are.

Let’s learn how to use an online PDF signer tool easily.

What is Sign PDF on Mobile?

A mobile PDF signature tool is an online tool that lets you add a signature to PDF files directly from your phone or tablet. With this tool, rather than printing and scanning paperwork, you can sign digitally in your browser. VelaPDF works as a free PDF signature tool, which makes it simple to sign documents online whenever you need.

How to Sign a PDF on Mobile Online

Follow these steps to sign PDF online mobile using VelaPDF:

Start by uploading your PDF file to VelaPDF.
After that, upload your certificate file in .p12 or .pfx format for secure signing.
Enter the password for your certificate.
Then, you have to click/tap on the “Sign PDF” button to begin the signing process.
Once done, download the signed file to your device.

After signing your document, you can further improve its security by using VelaPDF's Protect PDF tool online to add a password before sharing it with others.

Benefits of Signing PDFs Online on Mobile

Using VelaPDF’s online mobile PDF signer makes file handling much easier for daily work:

Save time with fast PDF signing
Sign PDF files online from any device
No need for paper or physical document
Secure and private PDF file processing throughout
Create professional, legally usable signed PDFs

Many people now prefer to fill and sign documents on mobile because the whole process feels faster and more convenient.

Features of Our Mobile PDF Signer

VelaPDF offers a modern and free PDF signature tool with some unique features:

Browser-Based Signing: Everything works directly in your browser, with no app installation required.
Fast and Simple Workflow: Upload your file, verify your certificate, and sign your document on mobile in just a few minutes.
Secure PDF Signing: Your files are protected through secure encrypted connections while the signing process is completed, which helps keep private information safe.
Clean Document Quality: Your PDF keeps the same text, layout, and formatting even after adding the signature.
Works on All Devices: You can use VelaPDF sign PDF mobile tool on Windows computers, Macs, Android phones, iPhones, and tablets through any updated web browser.

If you ever need to update the content after signing, simply convert the document with VelaPDF's PDF to Word tool online, make your edits in DOCX format, and save it again as a PDF.

Use Cases of Sign PDF on Mobile

Our electronic signature mobile PDF tool is useful in many real-life cases, including:

Business contracts
Client agreements
Employee onboarding documents
School and educational forms
Approval documents
Invoice signing
Government paperwork
Freelance contracts

Many people now choose to sign PDF on mobile without printing because it saves both time and effort.

Is It Safe to Sign PDFs with VelaPDF?

Yes, Velapdf sign PDF is entirely secure and designed with privacy in mind.

Files are processed through encrypted connections.
Files are stored only temporarily.
All uploaded files are automatically deleted within 10 minutes.
The entire process works inside your browser.
Your files are never manually reviewed or accessed by anyone.

When you finish signing multiple documents, VelaPDF's Merge PDF tool online helps you combine them into a single PDF, making them easier to organize, store, and share.

Conclusion

VelaPDF makes it easy to sign PDF on mobile online from anywhere using only your browser. The tool is fast, secure, and works across Android and iPhone devices without installation. If you need a reliable online PDF signer, explore VelaPDF and the complete VelaPDF PDF Utilities Hub for all your document needs.