How to Change Font Size in PDF Fillable Form with 4 Ways

Fillable PDF text is too big and want to reduce the font size in your PDF form? Or the fillable font is too small and want to make it bigger? Not that hard, my friend.

Fillable PDF forms made it very simple to fill out a PDF form, submit and collect data without writing down or printing out paper forms. But sometimes the fillable PDF font size is too big or too small, and we need to change it in form fields, with the size decreased or increased to fit our needs.

Changing fonts size in fillable forms can be easy, but the easiness depends on which tool we will use for the task. If you want to stick to something easy but efficient, you can change font size in Adobe Acrobat, if you are not that ambitious and want to try something free, we also have the options right here.

Table of Contents

• Method 1. Change Font Size in PDF Fillable Form Using Adobe Acrobat
• Method 2. Change Font Size in Fillable PDF for 100% Free
• Method 3. How to Change Font Size in Fillable PDF Online?
• Method 4. Change Font Size on PDF Fillable Form on Mac

Method 1. Change Font Size in PDF Fillable Form Using Adobe Acrobat

With the creation of PDF format by Adobe, it became possible for anyone dreaming of making digital copies flexible, shareable, professional-looking. And it’s Acrobat is the best way to change font size in or outside of a PDF fillable form field.

Adobe Acrobat has lots of features and gives users plentiful good ideas of how render a document. These include: Edit (text, image, url, media object, buttons, fields), Create (from Word, images, etc.), Export (to Word, spreadsheet, PowerPoint, text, image, etc.), Scan & OCR (turn scans, image PDF to searchable PDF, to Word, etc), Fill & Sign (fill out forms, sign, prepare form, add buttons), Markup (highlight, comment, annotate, draw), Compare, Share, Review and others.

With the Prepare Form feature, users can not only change font size, but also can change font style, text color, and everything about the form fields including appearance, position, alignment, actions, format …

If you are already familiar with the features of Adobe Acrobat, you may find it easier to change font size in it. If this is your first encounter with it, you can explore and experiment with its 7-day free trial first, which will help you to get to know it better.

Here is how to change font size in PDF fillable form with Adobe Acrobat:

1. Get the free 7-day copy of Adobe Acrobat (Standard or Pro Version), install and fire up the app on your machine.
2. Open the PDF in Adobe Acrobat by drag and drop.
3. Head to All Tools> View more> Prepare a form.
4. Click Create form.
5. Acrobat will display all the fillable fields, you can double click on a single field, or select all text fields that you want to change font size and right click one of the selected fields, choose Properties> Appearance.
6. Head to Text, choose a number from Font Size list to reduce or increase the form font size, then click Close.
7. Now Preview the form, enter texts to check the results, and you can continue to adjust if necessary by Exit preview.
8. Once OK, hit Save button.

Watch this video to change font size in fillable PDF form with Adobe, starting from 01:20,

Method 2. Change Font Size in Fillable PDF for 100% Free

There is nothing better than using Acrobat to change font size in a PDF form, but if you insist doing it with free tools, you can try with Sejda editor, and there is a caveat: you gotta say goodbye to efficiency when changing font size in your PDF using this method.

Sejda is online PDF editor that works in a web browser, it let users add or edit texts, links and images, also helps users insert fillable text boxes. You can easily change font size for the texts that outside of a fillable filed, also you can enter Form Edit mode to change properties of a fillable fields, including font size, color, alignment, etc. But you have to change the font size one by one in each fillable field. In addition, this tool allow 3 free PDF editing per day, up to 50MB and 200 pages.

How to change font size in fillable PDF for 100% free?

1. Navigate to Sejda.com/pdf-editor, upload the fillable PDF form.
2. Hover to Forms> Form Edit Mode.
3. Click on the fillable text box and choose Font size menu, then select a number to reduce or increase.
4. Enter texts into the fillable field to check if the font size is OK, then hit Apply changes.
5. Download the fillable PDF to your local drive.

Method 3. How to Change Font Size in Fillable PDF Online?

You might be tempted to change font size in PDF fillable form in your Chrome browser, because you don’t have to download a package and install on your machine. Sejda PDF editor is a good choice, but it has limits, it allows 3 free tasks only per day. If you need an extra method to change font size in your PDF form online, Soda PDF editor is useful.

Soda PDF editor is even more powerful than Sejda, by giving more features and tools to edit/create/manage/protect/convert /compress/OCR/fill/sign a PDF.  Users have full access to all these features, but a subscription is required to download the file. To change font size in a PDF form with this tool, you need to remove the fillable fields first, then enter texts with adjusted font size. It doesn’t reduce or increase font size in form directly.

If you still insist on changing font size in PDF fillable form online, we will offer an extra help of doing this with SodaPDF as follows:

1. Navigate to online.sodapdf.com in your web browser, log in with a premium account.
2. Upload the PDF file.
3. Select the field that you want to change font size, click on the trash icon to Delete.
4. Head to Text, enter needed texts into the place where the original form filed was located, select the texts and change the font size as you like.
5. Then click Export file> Download, save the form to your device.

Method 4. Change Font Size on PDF Fillable Form on Mac

In macOS, increasing or reducing font size in fillable PDF form is simple enough. On your Mac, Preview is preinstalled, the app will help you to open, markup, export, annotate, bookmark, rotate, crop and print PDFs. For a fillable PDF form, Preview let users easily fill out and change font size of entered texts in text box.

However, it can only change font size in the viewing when the texts are too small, it cannot permanently save the font size changes in your fillable PDF, unless you manually enter all the texts into the fields with its text tool.

Change font size in PDF fillable form on Mac Preview by entering texts manually

1. Open the fillable PDF in Preview, click on T icon from the markup toolbar and add a text box on to the place where you want to fill in.
2. Hover to Aa, select a font size for the entered texts.
3. Check the result, hover to File> Save.

Change font size in PDF fillable form on Mac Preview for viewing only

1. Open the PDF in Preview.
2. Input the text to the form fields, select the text and right click to choose Show Fonts.
3. Now you can move the size slider bar up or down to decrease and increase font size in the form.

Why Users Like Adobe Acrobat?

At the beginning, you might refuse to take an adventure with Adobe Acrobat, but at any point in the process of changing font size or editing PDFs with other tools, you will find they are not perfectly designed for all tasks, especially when you want more control over PDF customization, Adobe Acrobat is the only one solving all problems. There is also rich contents, materials and tutorials from Adobe to guide you into the new world of PDFs.