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How to reduce dwg file size

Printed From: CAD Forum
Category: EN
Forum Name: AutoCAD
Forum Description: Discussion about AutoCAD and AutoCAD LT, viewers, DWG and DWF formats, Design Review, AutoCAD 360, add-ons
URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=2043
Printed Date: 26.Apr.2026 at 07:15


Topic: How to reduce dwg file size
Posted By: CAD206
Subject: How to reduce dwg file size
Date Posted: 27.May.2009 at 01:27

We're have this problem at work where our files are getting bigger everytime we save the file. We're running autocad 2008

I've tried purge and export to autocad and those didn't work. Export to autocad did reduce the file size but once I would save it bumps up the size again. Our file would normally be 2mb but it would jump up to 8-9mb.
 
Any insight on this would really help as it's causing our files to open slow
 
Thanks!


Replies:
Posted By: dannyboy100
Date Posted: 27.May.2009 at 11:45
 
 
Try to copy all objects from current drawing to
new empty drawing.
 
 

Posted By: Kajito
Date Posted: 28.May.2009 at 11:13
This might help:
http://www.cadforum.cz/forum_en/forum_posts.asp?TID=2026

Posted By: jefrinkaith
Date Posted: 28.May.2009 at 11:58
What are these entities? If each one is composed of two lines that make a cross for example, then you could make a block out of this cross and then replace each set of two lines with a single block definition.

If these entities are just POINT objects, I doubt this exercise will save much file size...

You could also WBLOCK the "Static" entities out to a separate DWG file and then XREF it back into the main drawing. When you don't need to see this stuff, you could unload the XREF, then load it back for plotting for example.

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Jefrin - Outsourcestructuraldrafting.com

Posted By: SeanFtS
Date Posted: 28.May.2009 at 13:13
Do you save the drawing into lower CAD version? If not sure, try to saveas it, and see the popup window if shows you it will default save the drawing into a lower version.  You can also check your configuration: enter 'options' in command line of AutoCAd and switch to the 'Open and save' tab to see your default saveas drawing version.
Hope this helps.
 
Seans Swales
http://www.autodwg.com/ - http://www.autodwg.com/
 

Posted By: DXJ702
Date Posted: 04.Jun.2009 at 22:22

Often overlooked is the "registered applications" problem.  On the command line type "-purge"  The hyphen is to get the command line version.  Next, select "R" for Regapps.  At the next prompt, accept the wild card "*".  The next prompt is to verify each registered application, and you'd be well advised to select "N" for no.  The most I've found is 114,012.  Another aspect of this problem is the registered applications propergate from one drawing to another when a drawing with some in it is xref'd into another.  All your drawing should be purged to prevent them from spreading.
 Here is a lisp routine that automates the prompts:

;Purge Registered Apps by Paul Sanucci
(defun c:pura()(command "-purge" "r" "*" "n"))



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2007 LDD


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