Portable Document Format files are viewable by any user with a PDF reading program. To create and edit a PDF, a PDF writing program is needed. The Adobe Acrobat line of PDF writing applications are among the most popular. They are also among the most expensive, ranging from £129 to £519. One of the features shared among all three Acrobat versions -- Standard, Pro and Suite -- is the ability to edit and delete text in PDF files. You can delete text from a PDF in Adobe Acrobat 9 Standard by following a few steps.
Click the "Tools" menu and highlight the "Advanced Editing" option to display a list of editing features. Click the "TouchUp Text Tool" option. Acrobat will run through a process, during which it identifies fonts in the PDF. Depending on the size of the document, it could take a few seconds up to a minute or so.
Highlight a portion of text that you want to delete. Click once at the beginning of the selection and drag to the end of the selection while holding down the mouse button. You will notice that a border appears around the section of the document of which the selected text is a part.
Click the "Edit" menu and select the "Delete" option. Repeat 2 and 3 for each portion of text that you want to delete from the PDF file.
If you don't have one of the Adobe Acrobat programs, consider the free trial of Pro that is available from the Adobe website (adobe.com/cfusion/tdrc/index.cfm?product=acrobat_pro&loc=en) before purchasing one.