PDF Editing Issues

How to Increase Text Area Font Size in Acrobat DC

Huma Ashraf ChHuma Ashraf Ch Oct 28, 2026 869 views

Question details

The user needs to set the font size of a PDF form text area to a value larger than the preset 18 points.

How to Increase Text Area Font Size in Acrobat DC
Product
Adobe Acrobat DC
Device & OS
not provided
Scenario
Editing text form fields and adjusting text appearance in a PDF document.
Observed behavior
The preset font size dropdown in field properties appears to max out at 18 points, making it seem impossible to use larger text.
Before you start

Ensure your PDF document is not locked for editing and that you have the Prepare Form tool enabled to access field properties.

Solution 1Recommended

Manually Enter a Larger Font Size in Field Properties

Bypass the preset dropdown limitations by manually typing your desired font size directly into the settings.

While Acrobat DC provides a dropdown list of common font sizes up to 18pt for quick selection, this is not a hard limit. You can manually input any valid point size to accommodate larger text requirements.

1
Open the Prepare Form tool

Open your document in Acrobat DC and select the 'Prepare Form' tool from the right-hand tools pane.

2
Access Text Field Properties

Right-click the text field you want to modify and select 'Properties' from the context menu.

3
Navigate to the Appearance tab

In the Text Field Properties dialog box, click on the 'Appearance' tab to view formatting options.

4
Input a custom font size

Click inside the 'Font Size' dropdown box. Instead of selecting a preset number, highlight the current value, type a number greater than 18 (e.g., 24 or 36), and press Enter.

5
Save and preview

Click 'Close' to save the changes. Use the 'Preview' button at the top right to verify that the text area now accommodates your larger font size.

Manually Enter a Larger Font Size in Field Properties
Auto Font Size: If you are unsure of the exact point size needed, you can type 'Auto' in the font size box. This ensures the text automatically scales to fit the height of the text box.
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Edit PDF Forms and Customize Font Sizes with WPS Office

WPS Office provides a powerful, user-friendly PDF editor that lets you easily create, fill, and customize interactive PDF forms without dealing with restrictive preset limits.

  1. 1. Open the PDF in WPS Office: Launch WPS Office and open the PDF document containing the form fields you want to edit.
  2. 2. Access the Form tab: Navigate to the 'Form' tab in the top ribbon to reveal the form editing tools.
  3. 3. Open Field Properties: Double-click the target text field, or right-click it and select 'Properties' to open the configuration menu.
  4. 4. Set Custom Font Size: Go to the Appearance settings, manually input your preferred font size (or choose Auto), and apply the changes.
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Frequently Asked Questions

Why does Acrobat DC only show up to 18pt in the font size dropdown?

The dropdown menu provides standard sizes up to 18pt for convenience in typical form designs, as most standard forms use 10pt to 12pt text. However, this is not a hard limit, and the field accepts manual input for larger custom sizes.

Can I make the font size shrink automatically if the user types too much?

Yes. In the Text Field Properties under the Appearance tab, you can set the Font Size to 'Auto'. This forces the text to shrink automatically to fit within the visible area as the user continues typing.

Will the custom font size display correctly for users on other PDF readers?

Yes, as long as the chosen font is embedded or is a standard system font, the custom font size saved in the form field properties will render correctly in most standard PDF viewers, including WPS PDF and web browsers.

How do I change the default font size for all new text fields?

After setting your desired custom font size in a text field's properties, right-click that specific field and select 'Use Current Properties as New Defaults'. All subsequently created text fields will automatically inherit this font size.