DWG Viewer 3 can be used to open DWG, DXF, MacDraft and annotation files. Please see below, a full list of compatible files types:
AutoCAD DWG files:
DWG 2000 (AC1015) - AutoCAD 2000, AutoCAD 2000i, AutoCAD 2002.
DWG 2004 (AC1018) - AutoCAD 2004, AutoCAD 2005, AutoCAD 2006.
DWG 2007 (AC1021) - AutoCAD 2007, AutoCAD 2008, AutoCAD 2009.
DWG 2010 (AC1024) - AutoCAD 2010, AutoCAD 2011, AutoCAD 2012.
DWG 2013 (AC1027) - AutoCAD 2013, AutoCAD 2014, AutoCAD 2015, AutoCAD 2016, AutoCAD 2017.
DWG 2018 (AC1032) - AutoCAD 2018, AutoCAD 2019, AutoCAD 2020, AutoCAD 2021, AutoCAD 2022, AutoCAD 2023, AutoCAD 2024.
DXF files:
Equivilent DXF files/documents.
MacDraft files:
MacDraft 6.2+ (MD60) - MacDraft 5.6, MacDraft 6.0, MacDraft 6.1 MacDraft 6.2.
MacDraft 7+ (MD70) - MacDraft 7.0, MacDraft 8.0.
Annotation files:
DWG Viewer saves its own annotation (.ANN) files. You can reopen these files in DWG Viewer at a later date, if you need to make chnages to your annitations.