The base font size of a document is the most common font size in that document, i.e., the size of the bulk of text in that document. When you specify a Base font size, we automatically rescales all font sizes in the document proportionately, so that the most common font size becomes the specified base font size and other font sizes are rescaled …
Part 3. Remove Background from PDF in Adobe Acrobat Edit PDF. First of all, open the PDF document with background in Acrobat. Then click Tools > Edit PDF. Remove Background from PDF. Then in the Edit toolbar, click More > Background > Remove and click Yes to confirm. Then the background will be removed from the PDF page.
How To Edit a PDF File Online for Free. Drop and upload your PDF document into the PDF Editor. Add text, images, and annotations from the Mark up tab. Edit existing text from the Edit tab—this is a Pro feature. Rearrange, extract, and split pages from the Organize tab. Download or export your edited PDF in Word, Excel, JPG, or PPT.