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Is it possible to annotate PDFs displayed in Safari browser (setting Preview as the default viewer)?

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What do you mean? PDFs in Preview can be annotated. In Safari, they can't. What does setting Preview as the default viewer have to do with it, then? – slhck Dec 13 '11 at 13:50
if Adobe plugin is not used I hoped that the Preview plugin was used instead, and so be able to annotate – P5music Dec 13 '11 at 15:52
The default Safari PDF plugin is not the same as the whole While OS X's PDF Kit supports annotations, Safari doesn't have the UI to actually create them. – slhck Dec 13 '11 at 16:02
Do you mean it is not possible because Safari use webkit? Isn't possible to force it to use a Preview plugin? – P5music Dec 13 '11 at 16:07
There is no Preview plug-in. You can always disable PDF support in Webkit by running the following command in Terminal: defaults write WebKitOmitPDFSupport -bool YES Accessing a PDF in Safari will then just download it instead of displaying it in PDF. Safari is a viewer, so you cannot edit (and save) anything. It just doesn't fit with the rest of the behavior of the program. – Daniel Beck Jul 14 '12 at 12:48
up vote 0 down vote accepted

There is no special "Preview plugin" for Safari.

Safari – just like – uses PDF Kit, an OS X framework, to display PDFs. However, Safari can not create annotations on these PDFs, as it just doesn't have the implementation for creating annotations. Apple would have to re-program Safari to add these features and the necessary interface for Safari to edit PDF documents.

Or you'd need to use another plugin that actually provides this functionality (none that I know of).

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