How To Sign A Secured PDF (Free, 2024)

You're on this page because you:

• Have a PDF document;
• It is secured with a password;
• And you want to sign it;
• But you're not quite sure how to do it.

In this guide, we'll teach you how to electronically sign a secured PDF document.

By the end of reading this post, you're going to know everything about secured files and how to create your eSignature an add it to those files.

What is a secured PDF?

A secured PDF is a password-protected document, or one that is encrypted to limit people's access to seeing its contents.

People secure their PDF documents so as to limit everybody else's access to changing the contents of the file.

Now that you know what a locked PDF is, lets get to electronically signing it.

How to sign password protected PDFs

1. Enter its password (if you know it) and signing;
2. Use SignHouse to remove the password of the file;
3. Use Adobe Acrobat Reader's Fill & Sign feature;
4. Go to Google Chrome's Print tool;
5. Export the file in Google Drive;
6. Preview for Mac users;
7. Safari's Print tool for iPhone, iPad, or Mac;
8. Going to the Files app on iOS and removing the password;
9. Opening the PDF with Drive PDF Viewer on Android.

As you can see, there are quite a lot of methods to eSign a secured PDF. Fear not, we'll go through each of them into detail right now.

How to sign a secured PDF on Windows

There are three tools that help you sign a PDF document on Windows without a password: Google Chrome, Google Drive, and SignHouse.

Let's take a look at each method, one by one.

1. Google Chrome

Electronically sign a secured PDF document with Google Chrome:

1. Drag & Drop your PDF in Chrome;
2. Open the print menu: Right-click → Print;
3. Destination: Select Save as PDF;
4. Download the unlocked PDF document;
5. Finish with our electronic signature software.

Google Chrome is an underestimated tool that helps you save a PDF document without having its password.

When downloading the document, you'll get a 1:1 copy of the locked file, only now it doesn't have a password anymore and you can freely sign it.

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2. Google Drive (And Docs)

Another way to unlock and sign a secured PDF is to take it through Google Drive. First, go to your preferred Google Drive account. Then, follow these steps:

1. Upload/Locate your secured PDF document;
2. Right click the file → Open with Google Docs;
3. Click File → Download (top-left);
4. Select PDF Document (.pdf);
5. Click OK to save the PDF document without a password;
6. Proceed to eSign the unsecured PDF.

Use this simple trick to unlock a PDF document and electronically sign it.

Simply downloading it through Google Docs is going to remove the password, which allows you to go ahead and eSign the file.

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3. SignHouse (online tool)

One of the most reliable ways to electronically sign a secured PDF document is to use an online password remover.

At SignHouse, we've got a tool that removes PDF passwords and allows you to edit  documents in multiple ways — including adding your signature:

1. Upload your PDF document in the box below;
2. Remove it password;
3. Select the signature field (left side of the screen);
4. Drop your signature on the document;
5. Apply changes & Download.

SignHouse allows you to do two steps in just one place: first removing the password, and then adding your online signature to the PDF document.

The best part about our password remover and eSignature software is that they're both 100% free. No need to pay!

How to sign a secured PDF on Mac

Using a MacBook or iMac? Here are two relevant ways to sign a password-protected PDF document, using: Preview & Safari.

Let's check out both of the options!

1. Preview

You can electronically sign a password-protected document using Preview, the app that comes by default with your Mac:

1. Open the secured PDF with Preview;
2. Enter the file's password;
3. Select File → Save (top-left corner);
4. Disable the Encrypt box;
5. Save and add your signature.

Pro Tip: If you don't know the password to the file, use our free PDF Unlock tool that lets you remove the password in seconds.

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2. Safari

Alternatively, you can also use Safari to digitally sign a secured PDF document:

1. Open Safari;
2. Press CMD + O and click the secured PDF;
3. Type the document's password;
4. Press CMD + P to open the print menu;
5. Select Save as PDF (bottom-left corner);
6. Save the document and electronically sign it.

By default, you'll see the 'PDF' option in the bottom-left corner. Though, you need to expand the menu and select the 'Save as PDF' menu in order to save the file.

You're not necessarily going to print the PDF, but you want to open the 'Print' menu to get saving option in first place.

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How to sign a secured PDF on Android

There is an easy way to electronically sign a secured PDF document on any Android device as well — may that be a phone or a tablet:

1. Go to your device's Documents app (Or open Downloads);
2. Find the PDF → Tap More → Open With → Select Drive PDF Viewer;
3. Insert the password of your secured document;
4. Tap Open;
5. Select Save to Drive;
6. Electronically sign the document.

At SignHouse, we've got an Android PDF signing solution that helps you get work done on any of your Android devices.

How to sign a secured PDF on iPhone & iPad

Signing secured PDF documents on iOS is easy as well. Use your iPhone or iPad to electronically sign a document like so:

1. Locate the secured PDF document and open it;
2. Enter the file's password;
3. Tap the Markup icon (bottom-right corner);
4. Click the + (More) button;
5. Select Signature;
6. Add your signature to the secured PDF.

Alternatively, an useful guide for you is our story on how to sign a PDF on iOS. The guide says pretty much what you just read here, only it goes more into detail.

How to sign a secured PDF in Adobe

The last option to sign a secured PDF is with Adobe Acrobat Reader. Here are the steps you need to follow:

1. Open your secured PDF with Adobe Acrobat Reader;
2. Click Tools → Protect → Encrypt → Remove Security;
3. Save the document;
4. Open the file again;
5. Click Tools → Fill & Sign;
6. Select Add Signature and insert yours;
7. Download the signed PDF document.

You might be interested in how to sign a PDF without Adobe. That's another one of our guides that shows free eSignature alternatives to Adobe's tools.

That's every way you can electronically sign a secured PDF document.