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I'm trying to find a program that will compare two directories full of these drawing and image files.

What this will be used for, is to update a full directory of drawings on a periodic basis. The directory will contain many folders, sub-folders, and sub-sub-folders and so on.

I want to be able to:

  • Select individual files, or files that share similar names (E.g. "(Drawing1)#A.dwg" and "(Drawing1)#B.dwg")
  • See file information (Last date modified, file size, etc.)
  • Compare .dgn, .dwg, .tif and .pdf files (Not compare between files types - just two of the same type)
  • Compare a list of files, not just two at a time.
  • OS: Windows 7

Some issues:

There are going to some issues with the file comparisons, that should hopefully be able to be managed. Some of these issues are:

  • Possible different file names (as mentioned above).
  • The original copy of the directory may have been updated since the copy taken from off-site was taken - that is the copy may have been taken on Monday, and files were changed in the original after then, before the copy arrived on-site.
  • Possible file-type differences. It's possible there may be occurences where a file, for whatever reason, might be a .dwg instead of a .dgn, or some other inconsistency.

If these cannot be managed, that's not essential. That can be managed manually, though it would be nice to have some indication of these inconsistencies.


I realise that some of these points may be a bit unclear, and if so, please ask for clarification, and I will do my best to explain.

  • Do you want to compare the content bitwise/binary, or by somehow interpreted content? – Marcel Sep 4 '15 at 5:50
  • @Marcel, I basically want to know if the files are different in terms of content, i.e. if the drawing has been changed in any way (added a layer, moved a line etc). That will likely be different for the .tif and .pdf files though. – Ben Sep 4 '15 at 6:04
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Beyond compare will do most of what you ask, with bonus - visual comparison & showing the differences! Please see http://www.scootersoftware.com/features.php?zz=screenshot&shot=PixCompare I am having trouble linking to it for some reason :-(

Select individual files, or files that share similar names (E.g. "(Drawing1)#A.dwg" and "(Drawing1)#B.dwg")

Yes, you can select any two files to compare

See file information (Last date modified, file size, etc.)

Yes, plus image dimension in pixels and number of colours

Compare .dgn, .dwg, .tif and .pdf files (Not compare between files types - just two of the same type)  

I think that .dwg is very important for you and, alas, it cannot be compared graphically. However, if you only want to check if there is any difference, then do a hex compare.

TIFF is supported, as is PDF

Compare a list of files, not just two at a time.

Will compare two entire directory trees.

OS: Windows 7

Yup

It's a great little program, well worth the money. Can even compare Excel files, windows registries, databases, etc.

Download a demo and give it a try.

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