How documents in PDF format are edited and modified

Now whether to download some documents or the company directly delivered the document many will use the PDF format file, which is a portable document format, transmission view is good, but this format of the document in the editing operation is not so convenient, the pdf file How to edit the changes?

PDF documents some are protected by encryption or set editing restrictions, such documents need to be opened to remove the restrictions, or enter a document password open before you can edit the document normally.
First open the PDF file with the PDF editor, when the document opens, the left is the thumbnail window to toggle the page, and the right pane is the editing area for editing the page content. In the edit area, you can adjust the view size of the current page by using the lower right corner tool, or hold down the CTRL + mouse wheel to quickly adjust.
When editing the text content, click on the text location, then a text box will appear, we can edit the current text in this text box.
Add new text content first you need to add a text box, click the Text tool on the right, and then click the Place text box where you want to add the text, and then enter text in the new text box or paste the text.
Move the text position and drag the text box directly to adjust it.
The contents of the picture in the PDF can be resized, and you need to work with an external picture editing tool if you need to edit it. To add a picture, you can either copy the picture file directly and paste it into the current page, or choose the "from File" command on the Insert menu.
PDF file Save and other documents, the document will need to be re-exported to PDF file after editing, so if you want to save the document after the modification to the PDF format to select the output of the file as a PDF command, the Save command will not save the document as a PDF file.

How documents in PDF format are edited and modified