How to Edit PDFs With Preview in Mac OSX Leopard. With the release of Mac OSX Leopard (10.5) came a huge boost in features for Preview, Apple's PDF/image-previewing application. Along with brand-new and pretty powerful image-editing capabilities, Preview now has the ability to edit, annotate, combine and even add images to a PDF. Annotating PDFs comes in handy when you need to comment on the content or highlight certain sections without altering the content of a PDF.
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How to Create a PDF
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Open a document in any program (Word documents work fine, as do text files, RTFs or any other documents).
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Select "File" > "Print."
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Click on "PDF" in the lower-left corner of the Print screen.
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Select "Save as PDF," type in the name of the file and click "Save."
How to Highlight Your Text
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Open the PDF in Preview.
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Select a line of text in the PDF.
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Click "Tools" in the top menu.
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Scroll down to "Mark Up" and click on "Highlight Text."
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Your text should be highlighted in yellow. You can also underline and strike through (will place a line through your text) with the "Underline Text" and "Strike Through Text" options.



How to Annotate Your PDF
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Open the PDF in Mac OSX's Preview.
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Click "Tools" in the top menu.
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Scroll down to "Annotate" and click on "Add Oval" (you can also add a rectangle).
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Drag your mouse to create an oval around some text.
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Double-click on the gray square in the bottom-right corner.
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Click on the "Color" box to change the color of your oval and you can change the thickness of the line by typing in a different number in the "Thickness" box. You can also check the "Dashed" check box to make a dashed outline.
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Click "Tools," scroll down to "Annotate" and select "Add Note."
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Click on the PDF where you want to add the note.
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Double-click the note.
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Select what kind of note you want to add in the "Annotations" window by clicking on the "Icon" drop-down. This will change the icon next to the note window. You can also alter the color of the note and icon.
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Type your note in the note box.







How to Move, Add Pages and Combine PDFs
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Open up one of the PDFs in Preview.
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Select a page in the sidebar and click-drag that page to move it to another spot in the document.
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Go to the Finder and locate an image you want to add to the PDF.
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Drag the image into the sidebar, between two pages. You have now added a page to the PDF.
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Use the Finder to find another PDF you want to add to the end of your current PDF.
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Drag the entire PDF into the sidebar, below the last page of the current PDF. You have now combined two PDF files into one.
