How to Change Font Size in PDF Files

If you're wondering how to change font size in PDF, you should be aware that this is not easily done without the right tool. In other words, you'll need to have a proper PDF editor for this, not just an annotation tool like Adobe Acrobat Reader DC or Mac Preview.

The reason is that PDF was intended to be a static format that's not easy to change, making it suitable for viewing on practically any screen or any device without losing key qualities such as layout, alignment, and, of course, font type. So now, let's learn how to increase font size in PDF and how to reduce font size in PDF using a robust PDF editor called UPDF

how to change font size in pdf

Method 1: How to Change Font Size in PDF for Existing Content

UPDF is a powerful PDF editor that we'll be using to learn how to change font size in a PDF fillable form and other document types. In addition, you can also apply a range of annotations such as shapes, text markups, and text boxes.

how to change font size in pdf form

You can also manipulate the pages of a PDF file by rotating them, adding pages, removing them, reordering PDF pages, and so on. In addition to show, you how to edit font size in PDF, we'll also be looking at the process of how to change font size in fillable PDFs after you've added text boxes inappropriate places. So, without delay, let's look at two ways that show how to change font size in PDF documents.

Step 1: Import the PDF File

To open a document in UPDF, all you need to do is drag and drop the file from its folder.

You can also use the "Open File" icon on the welcome page of UPDF for this purpose.

how to change font size in pdf fillable form

Step 2: Go Into Edit Mode

To edit an existing text box so you can change the font size, you will need to enter Edit Mode.

To do this, all you have to do is click the "Edit" tab at the top of the UPDF interface.

how to change font size in pdf text box

Step 3: How to Edit Font Size in PDF

To change the font size of existing text, first, select the text element to be edited. Once the text is selected, you can change the font size from the floating toolbar near the selection.

how to change font size in pdf text box

Method 2: How to Change Font Size in PDF Fillable Forms

Now, let's look at how to change font size in PDF text boxes after you've added them to fill out the form.

Step 1: Open the PDF Form

Open the form as shown in the first method above.

Step 2: Enter Comment Mode

Click the "Comment" tab to go into Comment Mode.

Look for the text box for which you want to change the font size and proceed to the next step when you've identified it.

how to edit font size in pdf

Step 3: How to Change Font Size in PDF Text Box Elements

Click the "Text Box" icon to add a text box to the PDF. To see the attributes of an annotation element such as a text box, right-click it and choose Properties.

how to increase font size in pdf

In the sidebar panel, you'll see an option to increase or decrease file size.

Choose the correct size and then click outside the box to exit Annotation Mode.

And you're good to go!

UPDF makes it easy to answer the question of how to change font size in PDF fillable forms and other documents.


Tips for Changing Font Size in PDF

There are a couple of things you can keep in mind that will help you handle PDF files in an effective manner using the powerful editing functions of UPDF.

1. It's Better to Have a Copy of the Original File

First, remember that you may need to have a copy of the original file before you start making any changes to the font size and other elements in a PDF. For that reason, it's always a good practice to first create a copy of the file and then edit that version instead of the original. You can do this easily in UPDF by using the Save As option and specifying a slightly different name for the copy of the file. For instance, if your original file is called Orig.pdf, you can save the file as Orig_Edit.pdf so there's no confusion later on.

2. Remember and Match Font Size and Style

Second, it's super easy to match font sizes and types when you add to an existing text element, as opposed to adding a new text box. To elaborate, let's say you have a special font in the paragraph section that you want to replicate inside a text box when annotating the file. The normal way to do this would be to remember the font type, style, size, and color, and then apply that to the annotation you're adding.

Using UPDF is the easiest thing to do because it's designed to be fun and user-friendly, but there's also a lot of power underlying the attractive and playful design. What's more, there are new features being added all the time so if you start using UPDF today, within the next few iterations, you'll have access to a comprehensive range of PDF tools that cover OCR, optimization, redaction, and everything else you will need to handle any type of PDF workload no matter how light or heavy it is. The best part? It has a free version to use! So download UPDF today and never again pay a single penny for robust PDF functionality.