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CAD tip CAD tip # 8729:

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A
If you need to compare two DWG files a find their differences - changed, erased and added geometry - you can use the free application Autodesk Design Review (see DL Download).

This tool employs the DWF/DWFx drawing format and its function "Compare Sheets" allows to highlight in color all differences in the geometry of both drawings.

The workflow of generating DWF from a drawing and comparing two schemes from AutoCAD P&ID is described in a video available in the CAD Video section - see AutoCAD video #12

P&ID-compare

or on the ARKANCE's YouTube channel:

ACADACLTPIantDWGDWF
100% *CAD
31.7.2012    36012×   FAQ  
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applies to: AutoCAD · AutoCAD LT · PIant · DWG · DWF/Design Review ·

See also:
Tip 14472:Overview of CAD formats supported in Inventor 2026 (import/export/AnyCAD).
Tip 14285:How to identify duplicate blocks in AutoCAD DWG drawings? SelDupBlk.
Tip 14075:Overview of CAD formats supported in Inventor 2025 (import/export/AnyCAD).
Tip 13800:Visually compare 3D geometry in CAD and BIM files.
Tip 13683:Limitations of the LISP language (AutoLISP, VisualLISP) in AutoCAD LT - what to watch out for
Selected tip: Isometric dimensions in a 2D drawing.


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