Open your document in Extract Pdf Pages , go to the page you wish to separate then click on the Tools option (top right), drop down the Pages tab, choose the Extract option, check the box that says Extract Pages As Separate Files and OK. Save the jpeg where you can find it. If you wish to make it into a PDF instead of keeping it a jpeg open the jpeg in Extract Pdf Pages go to File/Save as/PDF
Go to one of the PDF and save in any format you want. Afterward, you can edit the image and make any other modifications to it. Now, you can edit the information you need inside the PDF file.