What is a psdt file type?

Community Beginner ,
Jun 22, 2016

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Good day to you all. Just noticed a new file extension for photoshop 2015.5 (actually a few) but i was curious what the psdt one is for?

Thanks

A .PSDT file is a Photoshop Document Template, like a .DOT for word. The difference to a normal .PSD file is that it opens as "untitled" and requires you to save it as a new file, preserving the original from overwriting.

I was curious too and tested it a minute ago.

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Adobe Community Professional ,
Jun 22, 2016

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PSD is a default Phtoshop document file type.

Nancy O.

Nancy O'Shea, ACP
Alt-Web.com

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Community Beginner ,
Jun 22, 2016

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Hi Nancy. Thank you. I know what psd is

... what is psdt? Still a default file type?

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Adobe Community Professional ,
Jun 22, 2016

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What's your OS?

Which version of PS?

Nancy O.

Nancy O'Shea, ACP
Alt-Web.com

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Community Beginner ,
Jun 22, 2016

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I guess I am more wondering if it differs as psb does from psd, in handling large format.

Just thought maybe psdt, was a next step up...

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Community Beginner ,
Jun 22, 2016

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windows 7 - latest 2015.5

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Community Beginner ,
Jun 22, 2016

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this guy

psdt.jpg

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Adobe Community Professional ,
Jun 22, 2016

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Right click > Properties.  What info are you getting about the file? I'm wondering if it's a Temp or Backup that your system is creating.

Nancy O.

Nancy O'Shea, ACP
Alt-Web.com

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Adobe Community Professional ,
Jun 22, 2016

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On Win 10, I see PSD, PDD.  No PSDT available.

Nancy O'Shea, ACP
Alt-Web.com

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Community Beginner ,
Jun 22, 2016

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very interesting.... i have windows 10 at home, when i get home tonight i'll check

Thank you for taking the time

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Participant ,
Jun 23, 2016

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FWIW I am on Windows 10 and 2015.5 (updated today) and have the same options as  *.PSDT)

I can't find anything in any release notes explaining the file type.

- Kevin

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New Here ,
Jun 24, 2016

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Nancy, have you updated recently?

I am running Windows 10 and have Photoshop CC 2015.5

I have no clue about the PSDT. This thread was the second result in a search on Google, and it wanted to search for PSD. There isn't even anything about it at the College of Wikipedia!

I saved the same document with the outdated MIME type as a GIF animation, and I got these results:

PSD 88,177,852 bytes

PDD 88,177,852 bytes

PSDT 88,177,644 bytes it makes the file smaller?

PSB 88,800,040 bytes

I tried with another file a JPG that's 1920 1200.

PSD 6,944,994 bytes

PSDT 6,944,994 bytes

Then I tried with the original Canon's RAW CR2 file

PSD 106,606,423 bytes

PSDT 106,606,867 bytes

PSB 106,627,615 bytes

I've only seen one PSB file end up being smaller than the PSD, and other than that after a computer crash (had to replace my laptop's battery) a PSB used inside the "Photoshop Temp111111111" file, and when you want to edit the contents of a smart object, which is also created in the "Username\AppData\Local\Temp" folder.

Still, I have no idea what a PSDT file is.

PSDT results: smallest file, same size, in the middle kind of like the Porsche Cayman.

PSDT_I-like-turtles.png

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New Here ,
Jun 26, 2016

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I do agree until adobe releases information regarding the new "PSDT" file, I am not sure how it would benefit you at the moment. But I am sure it will in some way later on, I decided to drag both files into a text editor to see if any of the structural information was different and there is only thing different between the files, the "PSD" is classed as a photoshop file the new "PSDT" is named just after the file name of your document.

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Adobe Community Professional ,
Jun 26, 2016

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Just guessing..  Maybe it's coming from data that's written to the file by another app like Bridge or Lightroom...

Nancy O.

Nancy O'Shea, ACP
Alt-Web.com

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New Here ,
Jul 08, 2016

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A .PSDT file is a Photoshop Document Template, like a .DOT for word. The difference to a normal .PSD file is that it opens as "untitled" and requires you to save it as a new file, preserving the original from overwriting.

I was curious too and tested it a minute ago.

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Community Beginner ,
Jul 08, 2016

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Outstanding! Thanks so much. Makes complete sense.

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Contributor ,
Feb 22, 2017

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It's a new format available in CC only. You can actually open it in older versions, too, but not through "open". Choose "open as" instead and it'll open as a usual psd. (Or you can also rename it and manually change the file extension into .psd.)
Other than that, it behaves like an Illustrator .ait - as LianParma already said.

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Adobe Community Professional ,
Feb 22, 2017

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It's been added since CC 2015.5  Good explanation here courtesy of Deke McClelland and lynda.com

7/9 # Tutorial Photoshop template PSDT files - Photoshop CC 2017 New Features - YouTube

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Adobe Community Professional ,
Mar 26, 2018

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That's interesting Gene.  It had passed me by, and it looks like it might be genuinely useful.  There's some more here.

Create documents in Photoshop using templates and presets

I have not read it yet, but templates are something I definitely think I will use. 

Thanks to Dopperthingie for the heads up.

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New Here ,
Mar 26, 2018

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I just rename the file with the extension .psd and they open fine in Photoshop

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TOkamura LATEST
New Here ,
Jul 24, 2020

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If you open your photoshop and browse to the file you can easily open the file.

double click won't open it.

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