Applies to AutoCAD 2016, AutoCAD Architecture 2016, AutoCAD Civil 3D 2016, AutoCAD Electrical 2016, AutoCAD MEP 2016, AutoCAD Map 3D 2016, AutoCAD Mechanical 2016, AutoCAD P&ID 2016, AutoCAD Plant 3D 2016, and AutoCAD Utility Design 2016 Applies to AutoCAD 2016, AutoCAD Architecture 2016, AutoCAD Civil 3D 2016, AutoCAD Electrical 2016, AutoCAD MEP 2016, AutoCAD Map 3D 2016, AutoCAD Mechanical 2016, AutoCAD P&ID 2016, AutoCAD Plant 3D 2016, and AutoCAD Utility Design 2016 The Adobe® Portable Document Format (PDF) is a compressed electronic document format that can be viewed on multiple platforms. PDF files are widely used to transmit drawing data over the Internet. There are many commands and methods you can use to produce PDF files. Use these guidelines to select the most appropriate method. PDF presets are named groups of settings that control the PDF creation process and are saved as plotter configuration files (*.pc3). Presets let you balance the file size with quality and functionality, depending on how you want to use the PDF files. The predefined PDF presets listed address most typical usage scenarios. However, if you have specific requirements that a predefined preset cannot meet, customize an existing preset and save it as a *.pc3 file with a different name. If a PDF viewer does not have access to a font that you used in a drawing, it displays the affected text using a substitute font. Often, the substitute font doesn't match up to the original font. Consequently, the text in the drawing can appear different than the text in the PDF file. You can prevent font substitution by capturing the font in the drawing and embedding it in the PDF file. Alternatively, you can convert all text to geometry. Converting text to geometry ensures that the text in the PDF file is identical to that of the drawing. However, the PDF file size increases and text pixelation can occur when you view the PDF file at a high magnification. You can reduce pixelation by increasing raster image quality. Fonts that cannot be distributed because of legal restrictions are not embedded in the PDF file, even though you enable the capture fonts option. - All viewports, model space or layout that have a 3D Visual style applied to them are converted to raster images when plotted to PDF. As a result, drawing information such as the layers within the viewport is lost. Furthermore, text within the viewport is not searchable, and hyperlinks are removed. - If you use the Adobe Acrobat Reader default printer settings to print a PDF drawing, transparent objects and wipeouts might not print correctly. If the PDF file contains transparent objects, you may need to adjust some settings in Adobe Acrobat. Set Transparency Flattening to 'Print as Image' or reduce the Raster/Vector Balance in Adobe Acrobat. Refer to the Adobe documentation for more information. - PDF stores data in single precision numbers, while DWG stores data as double-precision numbers. This loss of precision can become apparent as: Round-off errors on computed locations of objects, such as the locations of tangent points, and arc radiuses and their endpoints. This page has been translated for your convenience using a machine translation service. This does not serve as an official translation and may contain errors and inaccurate translations. Autodesk makes no warranty, express or implied, as to accuracy, reliability or completeness of any information translated by the machine translation service and shall not be liable for any damages or loss from your reliance on the translation service. Source.