Preview is the built-in image viewer and PDF viewer of the macOS operating system. In addition to viewing and printing digital images and Portable Document Format (PDF) files, it can also edit these media types. It employs the Aqua graphical user interface, the Quartz graphics layer, and the ImageIO and Core Image frameworks. History Like macOS, Preview originated in the NeXTSTEP operating system by NeXT, where it was part of every release since 1989. Between 2003 and 2005, Apple claimed Preview was the "fastest PDF viewer on the planet." Supported file types Preview can open the following file types. AI – Adobe Illustrator artwork files (if PDF content included in file) BMP – Windows bitmap files CR2 – Raw image file used by Canon cameras DAE – Collada 3D files DNG – Digital negative files FAX – Faxes FPX – FlashPix files GIF – Graphics Interchange Format files HDR – High-dynamic-range image files ICNS – Apple Icon Image files ICO – Windows icon files JPEG – Joint Photographic Experts Group files JPEG 2000 – JPEG 2000 files OBJ – Wavefront 3D file OpenEXR – OpenEXR files PDF – Portable Document Format version 1.5 + some additional features PICT – QuickDraw image files PNG – Portable Network Graphics files PPM – Netpbm Color Image files PNTG – MacPaint Bitmap Graphic files PPT – PowerPoint files PSD – Adobe Photoshop files QTIF – QuickTime image files RAD – Radiance 3D Scene Description files RAW – Raw image files SGI – Silicon Graphics Image files STL – STereoLithography 3D format TGA – TARGA image files TIF (TIFF) – Tagged Image File Format files XBM – X BitMap files In macOS Monterey and earlier, Preview supported the display of EPS and PostScript documents using on-the-fly conversion to PDF format. However, this functionality was removed in macOS Ventura, although users can continue to print and files by dragging them into the printer queue. 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. As of OS X 10.4 (Tiger), Preview lost playback functionality and animated GIF files are displayed as individual frames in a numbered sequence. Features Editing PDF documents 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