
PDF is nowadays a wide range of a file format, its can encrypt, not easy to change and edit. Therefore it applies more extensive. General now online document all takes the file format. But sometimes for PDF content change has the trouble. The general PDF read tools and didn't change the function of the PDF documents. Such as Adobe reader, foxit viewer etc...... But some viewer can modify PDF documents, such as adobe acrobat reader of the company. The other is some small editor software.
Here is a bit of a personal experiences that how can I modify a PDF document.
First of all, we have to know the basic component for PDF documents: PDF document and the word document composition structure is the same, they are made by text, form, pictures, etc. several components. Today said changes. (some PDF documents for scanning picture, this document modifications can only use images to modify the tools, like photo shop, etc, this will have nothing to say..)
1. using PDF reader modify tools - acrobat
The most common way is this modification tool; no longer introduce the detailed steps etc. But this approach also is not everything. This is because the PDF files included in your system font that are not compatible. So, if you create PDF files, can use this method to be modified, but if is PDF files included not compatible with the font, can't.......

2. Use Adobe PDF editor
Modifying the document no longer introduce at this paper. Now focuses on how to use PDF editor to modify PDF document. First, use the software to open you wants to edit the document, the selected text (no matter the compatibility of the font). If the PDF are protected by PDF password, we can try the PDF password remover software to remove PDF password. The restrictions will be removed in seconds. It is easy for you to copy and print the PDF files after removing PDF password. And you can also edit the PDF files without restrictions if you have PDF editor.
3.convert PDF to word document
Write down the font, then use PDF converter software to convert PDF into a Word document, in Word document changes related content, pay attention to font you just write down, complete modification later and convert PDF to word document for Mac. If the other part of the text file format and language did not change, you will get your effect. and other places have changed, can use the most simple copy you the modified content, and paste the original document that can be covered.