little image in the corner of TIFs in Gimp

Hello folks.
When I save a TIF file in DPP and then open it in Gimp, there's a little duplicate image in the upper-left corner of the main image. It has its own layer. I don't see it in DPP or in PS Elements.
What is it?
Thanks

Could it be an icon for something in Gimp? A lot of programs use little icons over a thumbnail or whatever. If you "hover" your mouse pointer over it, does any "tip" pop up?

No, no popups.
It's a tiny version of the picture I'm working on. I think it has something to do with a jpeg imbedded in the tif, but I don't know what that's for.
When you save files in DPP, you actually have the option to save as Jpeg, tif, or jpeg+tif, but I don't choose the jpeg+tif option because I don't see the point of it. But when I open the file in Gimp, the little picture is still there in the corner. (Since it's in its own layer, I just delete the layer.)
I can't find anything in the Gimp docs or the DPP docs about it, but I was hoping some Gimp expert could fill me in.
Thanks

Interesting -- I have no idea 'cause I've never tried that option -- I wonder...?

I've never used Gimp but I do know that every tif has at least one embedded jpg thumbnail, and sometimes more than one. Its purpose is that when viewing images in a photo browser the application does not have to open the full tif, which can be very large, and then downsize it to make a thumbnail - there is already one there and waiting. But I'm very surprised that Gimp is displaying the thumbnail as you describe. It is usually something that only geeks know about and, together with a lot of other metadata hidden in the file, normal people never dreamed of.

BTW, the tif + jpg option in DPP produces two separate fullsized files.

It sounds like my removing that layer will make my TIFs smaller and, since I haven't noticed any problems from doing that, I'll continue to do it.
Thanks for the info, it's always good to know what's going on.

I have also wondered what the little no.1 and the envelope in the top left indicate when I open images in Photoshop. Its common to jpegs, psds and tiffs.

Heres a corner crop to show what I mean.

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Lowner wrote in post #10824353
I have also wondered what the little no.1 and the envelope in the top left indicate when I open images in Photoshop. Its common to jpegs, psds and tiffs.

Heres a corner crop to show what I mean.

At the cost of PS, seems like they would have the most extensive manual in the world. Doesn't say anything about that, huh? Whatever it is, it doesn't show up in PS Elements.

Lowner wrote in post #10824353
I have also wondered what the little no.1 and the envelope in the top left indicate when I open images in Photoshop. Its common to jpegs, psds and tiffs.

Heres a corner crop to show what I mean.

It's a slice. No clue why you have one around the whole image though.

Hank,

Slice?

Photoshop has a slice tool for cutting images into web friendly pieces so you can assign links to several parts of one image. It's a bit outdated since CSS was invented but when you create a slice, PS numbers it and displays the envelope thing top left of the slice.

Again, no clue why you have one as I'm sure you have to deliberately do it.

Hank,

Thanks for the explanation. It's on every image I ever open in Photoshop which as you say is very odd.