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Why are some file extensions capitalized, while others aren't?

Question asked by Keaton Warn on Aug 17, 2018
Latest reply on Aug 17, 2018 by Matt Lombard

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I've noticed that I have to account for differences in capitalization of file extensions of the same type. For example, some part files are ".sldprt" while most of them are ".SLDPRT". Why is this?

My initial impression is that .sldprt files are not linked to a drawing, while .SLDPRT files are linked to a drawing. I could be totally wrong though, this is just what I saw as a likely possibility.

If anyone has more examples of file extension capitalization inconsistency, please share! I'm a bit curious.

Dan Pihlaja Aug 17, 2018 1:19 PM

Correct Answer

I asked the same question:

Why are some file references upper case while others are lower case? See answer from Jim Wilkinson

See the reply in context

No one else had this question

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Matt Lombard Aug 17, 2018 1:18 PM

No, there's no difference.

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Keaton Warn @ Matt Lombard on Aug 17, 2018 1:24 PM

I guess this doesn't exist then

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Tony Tieuli @ Keaton Warn on Aug 17, 2018 1:31 PM

Keaton Warn wrote:

I guess this doesn't exist then

Are you saying that there is a difference in the way those files function based on whether or not the extension is lowercase or uppercase?

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Matt Lombard @ Keaton Warn on Aug 17, 2018 1:38 PM

I'm sure whatever you're referring to exists, but it has nothing to do with the content of the file, or the size. JimW is saying it's a combination of Microsoft inconsistency over the years combined with SW inconsistency of the years in how they display case in file names.

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Deepak Gupta Aug 17, 2018 1:18 PM

I believe this is more a windows things rather than SOLIDWORKS. And I've not seen any reference issue with extension in different case.

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Keaton Warn @ Dan Pihlaja on Aug 17, 2018 1:25 PM

That looks like an excellent, detailed thread. I will read it fully in detail later, but from what I gathered from glancing over it it answers my question. I should have tried a bit harder to find it. Thanks!

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7 Replies

Matt Lombard Aug 17, 2018 1:18 PM
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No, there's no difference.
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- Keaton Warn @ Matt Lombard on Aug 17, 2018 1:24 PM
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  I guess this doesn't exist then
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  - Tony Tieuli @ Keaton Warn on Aug 17, 2018 1:31 PM
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    Keaton Warn wrote:
    
    I guess this doesn't exist then
    Are you saying that there is a difference in the way those files function based on whether or not the extension is lowercase or uppercase?
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  - Matt Lombard @ Keaton Warn on Aug 17, 2018 1:38 PM
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    I'm sure whatever you're referring to exists, but it has nothing to do with the content of the file, or the size. JimW is saying it's a combination of Microsoft inconsistency over the years combined with SW inconsistency of the years in how they display case in file names.
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Deepak Gupta Aug 17, 2018 1:18 PM
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I believe this is more a windows things rather than SOLIDWORKS. And I've not seen any reference issue with extension in different case.
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Dan Pihlaja Aug 17, 2018 1:19 PM
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Correct Answer
I asked the same question:
Why are some file references upper case while others are lower case? See answer from Jim Wilkinson
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- Keaton Warn @ Dan Pihlaja on Aug 17, 2018 1:25 PM
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  Correct Answer
  That looks like an excellent, detailed thread. I will read it fully in detail later, but from what I gathered from glancing over it it answers my question. I should have tried a bit harder to find it. Thanks!
  Like • Show 1 Like1
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Why are some file extensions capitalized, while others aren't?

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