A new "edit button" where the picture can be edited is introduced in Version 7. However, encrypted PDFs cannot be edited further, so the original author should always keep an unencrypted version. Preview can encrypt PDF documents, and restrict their use for example, it is possible to save an encrypted PDF so that a password is required to copy data from the document, or to print it. As of OS X 10.4 ( Tiger), Preview lost playback functionality and animated GIF files are displayed as individual frames in a numbered sequence. The version of Preview included with OS X 10.3 ( Panther) could play animated GIF images, for which an optional button could be added to the toolbar. TIF (TIFF) – Tagged Image File Format files.RAD – Radiance 3D Scene Description files.PS – Adobe PostScript files (after an automatic conversion to PDF).PDF – Portable Document Format version 1.5 + some additional features.JPEG – Joint Photographic Experts Group files.GIF – Graphics Interchange Format files.EPS – Encapsulated PostScript files (after an automatic conversion to PDF).CR2 – Raw image file used by Canon cameras.AI – Adobe Illustrator artwork files (if PDF content included in file).
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