Answered
How to unembed or remove an AcroForm font that is not used by any form field anymore?
I have a good old AcroForm created with Acrobat. When I change the font of some form field, the corresponding font gets embedded within the AcroForm. However, when I change the form field's font, the old font remains embedded within the AcroForm, even though it is not used by any field anymore. This adds a lot to the form's file size. How can I clear / remove the obsolete font from the AcroForm?