Free PDF Editor is wonderful software which helps to edit and build PDF at your convenience. You can insert shape, change font and shape style and so on.
The PDF formatted files is not easily editable so PDF insert page numbers is also not so easy so for that you need a third party tool that will help you to insert page numbers in it then try PDF Bates numberer tool which is free to use.
If you have need to arrange PDF page in a systematic way then try Adobe Bates Stamping Tool that gives you different alignments to put page numbers with special colors and size.
Do you want to protect PDF pages? You can use PDF watermark tool to add image watermark in PDF documents. To insert image watermark in PDF files you need to browse PDF files which you want to protect.
Stamp PDF bates numbering option has added in Bates stamping PDF tool. Bates stamping PDF tool or PDF page numbering tool is a simple mode that helps corporate and legal users to insert legal stamps in PDF documents.