How to Sign a PDF? (5 Ways)

PDFs are widely used for sharing digital documents across platforms. And there are times when you need to sign a legal agreement or verify a PDF form. In these situations, knowing how to sign a PDF is essential.

This article will guide you through five easy ways to sign PDFs using UPDF. It’s a powerful PDF editor that makes adding signatures quick and effortless.

You can add digital and electronic signatures, edit PDFs, create fillable forms, and share your signed PDFs. Plus, it’s cheap and affordable. Buy it today to sign your PDFs with ease!

Download UPDF on your device now. Then, follow our guide to validate your PDFs quickly.

Part 1. How to Electronically Sign a PDF? (3 Ways)

Electronically signing means adding handwritten or image-based signatures to your PDF. If you’re looking to sign a document that is not legally binding, an electronic signature is the way to go. UPDF gives you three easy solutions for it.

Let’s explore these below!

Way 1. Via Creating Signature

UPDF's signature tool lets you sign PDFs using your mouse, keyboard, or images. You can also customize and upload your signature to the cloud for easy access across platforms.

Here’s how to sign a PDF using this method.

Step 1: Launch UPDF and click “Open File” to import your PDF.

Step 2: Click “Comment” from the left. Then select “Signature” from the top and click “Create.”

Step 3: Select a method to create a signature from the popup.

• Handwritten Signature: Select “Mouse” from the top and choose the signature’s color and thickness. Then, draw it using your mouse/trackpad.

• Typed Signature: Select the “Keyboard” option. Then, write your name and customize its color using the option in the bottom right.

• Image-based Signature: Select the “Image” option and click “Choose File” to upload your signature. Then, crop it and click “Create” to add it to the PDF.

Step 4: Click “Save to Cloud” at the bottom left to store and sync your signature across platforms.

Let’s explore another way to sign your PDFs!

Way 2. Via Pencil

You can also create a handwritten signature using the Pencil tool in UPDF. Here’s how to sign a PDF using it.

Step 1: Open your PDF with UPDF. Then, select the “Pencil” icon in the “Comment” toolbox.

Step 2: Select the pencil's color, opacity level, and thickness as needed.

Step 3: Use your mouse to draw the signature in the relevant field to sign the PDF.

Keep reading for another solution to sign PDFs!

Way 3. Via Adding Image

If your signature is saved in a transparent image format, you can upload it and add it to your PDF. This can be useful for various scenarios, such as adding a consistent signature to a large volume of documents or reusing a signature for routine documents.

Here’s what to do.

Step 1: Download the UPDF via the below button firstly. After importing your PDF in UPDF, select “Edit PDF” from the left. Then click “Image” from the top.

Step 2: Click where you need to add the signature and import your image.

Step 3: Drag the borders to resize the signature, or use the toolbar to crop, rotate, or replace it.

So, that’s how to electronically sign a PDF! Now, let’s see how to add digital signatures.

Also Read: Electronic Signature vs. Digital Signature: Unraveling the Key Differences

Part 2. How to Digitally Sign a PDF?

Unlike electronic signatures, digital signatures are more secure and legally recognized. They show the signer’s identity and ensure the document has not changed. UPDF lets you digitally sign a PDF with and without a signature field. Let’s see how.

Way 1. With Signature Field

Do you need to fill out an interactive PDF form with a fillable signature field? With UPDF, you can digitally sign it in just a few steps.

Here’s how to digitally sign a PDF with a signature field.

Step 1: Open your PDF with UPDF. Then, click the signature field. This will open a popup. From here:

• Import a Digital Signature: Click the “Import” button. Then, click “Browse” to import your ID. Type its password and click “Save.”
• Add a New ID: Click the “Create” button. Enter your name, email, and organization details. Then click “Create” and proceed.

Step 2: Select a location to save your ID and add a six-digit password to protect it. Once you've done this, click " OK.”

Step 3: Your digital signature will be created. Click “Sign” to add it to the PDF.

Way 2. Without Signature Field

Do you have a static PDF form or contract without fillable fields? UPDF lets you create a signature field to sign the PDF digitally.

Here’s how it’s done.

Step 1: Launch UPDF and click “Prepare Form” from the left.

Step 2: Select “Digital Signature” from the top. Then click anywhere to add the signature field.

Step 3: Resize the signature field and enable “Preview” from the top right. Click the “Sign Here” box. Then, create or import your digital ID.

So, that’s how to digitally sign a PDF! Signing is just one of the many capabilities of UPDF. Watch the video below or read this review to explore everything you can do with it.

Or, try it out yourself!

Final Words

That’s all about our guide on how to sign a PDF! Whether you want to add digital or electronic signatures, UPDF offers an easy solution. You can add handwritten, typed, and image-based signatures. And if your PDF does not have a signature field, you can still sign it digitally with UPDF. Download to try it now! You’ll find a versatile solution to authenticate your documents with ease.