Changing font size in fillable form field

You can't change it in Reader but it will work in Reader if you change it with Acrobat, if that's what you are asking. In Acrobat turn on form editing (how? It is different in different Acrobat versions), right-click the field and select 'properties'. On the appearance tab, change the font size drop-down. You can select and change multiple fields at the same time by selecting them individually while holding down the Ctrl key.

You can only make changes to certain forms with Adobe Acrobat Pro: If the form was created in LiveCycle Designer, you cannot change the field properties in Acrobat. Also, if the file is protected with security settings, you will need the password to make changes. If the file is part of a document workflow and was saved with extended Reader rights, you cannot change the file directly, you will have to use File>Save a Copy first to create an editable version.

Karl Heinz Kremer
PDF Acrobatics Without a Net
PDF Software Development, Training and More...
http://www.khkonsulting.com

Yes, you can only select fields that are on the same page. If you have to do this a lot, you may want to look into changing font size settings via a script. You can for example create a custom command in Acrobat DC or a batch script and then run a script that changes the font size for every text field.

Karl Heinz Kremer
PDF Acrobatics Without a Net
PDF Software Development, Training and More...
http://www.khkonsulting.com