How do I change the font or size of text in a PDF using Adobe Acrobat?

First, click 'Edit' in the global bar. Then, click on the text you want to change. You will see options to change the font, size, and alignment. Choose the new font or size from the tools that appear.

Edit PDF Text Boxes in Adobe Acrobat — How-to & AI prompts

AI prompts

2 ways to ask · copy any one

AExecute — “help me do it”The meeting minutes PDF has cramped speaker labels; increase the speaker label text box width…+

The meeting minutes PDF has cramped speaker labels; increase the speaker label text box width on page [page=2] and set line spacing to [spacing=1.2] so names and timestamps don’t wrap awkwardly before tomorrow’s distribution.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

CDecide — “help me choose”We combined notes from three people and the text boxes vary across pages—some names overlap,…+

We combined notes from three people and the text boxes vary across pages—some names overlap, bullets misalign, and one box runs into the footer. I don’t know whether to consolidate into a single flowing text box or keep multiple anchored boxes. Explain the pros and cons for future edits and for printing, recommend which approach will minimize reflow issues, and give the exact box sizes and margins to standardize the document.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

How to do it

the tool · the steps · what to avoid

1
Open the PDF file containing the fillable form in Adobe Acrobat.
2
Click into the form field you want to edit.
3
Delete the existing text or select it to overwrite.
4
Type the new text you want to appear in the form field.
5
Click outside the form field or press Enter to save your changes.
Best practiceIf you cannot edit a form field, the PDF may be locked or not have interactive fields; try using 'Prepare Form' to check field properties.

In the appWith the API

You can quickly move between form fields by pressing the Tab key on your keyboard.

This runs in the Acrobat app - there is no separate API for this task.

Glossary

words on this page

OCROCR stands for Optical Character Recognition. It is technology that turns images of text into real text you can search and copy.ExampleAfter scanning a paper invoice, OCR allows you to copy the vendor's name from the image.

Embed fontsEmbedding fonts means including the font file inside the PDF so it looks the same on any computer.

PreflightA way to check files for problems before sharing or printing.ExampleYou preflight your magazine layout to catch low-resolution images or incorrect color profiles before sending it to the printer.

FAQ

about this task

First, click 'Edit' in the global bar.
Then, click on the text you want to change.
You will see options to change the font, size, and alignment.
Choose the new font or size from the tools that appear.

This message appears because Acrobat needs the font to be installed on your computer, not just embedded in the PDF. Even if the font is part of the PDF file, your system must have it to let you edit. To fix this, you can install the font on your computer, use Adobe Fonts, or try to embed missing fonts using the 'Preflight' tool under 'Print Production'.

When you open a scanned PDF and click 'Edit', Adobe Acrobat will automatically run OCR. This process tries to turn the image of text into editable text. Always check the OCR output carefully, especially for numbers or names, as it can sometimes make mistakes. For complex layouts, adding a new text box on top might work better than editing the converted text.

Editing existing text means you change the words that are already there, trying to keep the original layout. Adding a new text box means you place a completely new block of text anywhere on the page, which can be useful for comments or new sections. For scanned documents, sometimes adding a new text box on top of the image is easier than trying to edit text that OCR has converted, as it helps preserve the original look.

It is important to match the font, size, and color when you edit text to make sure your changes look natural and professional. If the new text does not match, the edit will be very obvious and can make the document look messy or unprofessional. Using common fonts like Arial or Times New Roman, or embedding fonts, also helps ensure the document looks correct on different computers.

Edit PDF Text Boxes

When to use it

AI prompts

How to do it

Glossary

The real tasks

FAQ

Sources

Adobe help

Video

Other guides

When it fails