In article ,
"2" wrote:
Now this is confusing. I have noticed that if I have only the background layer, and alt-click on it to make it a regular layer, file size grows.
It is not a mystery.
The file has layers. If you see Layer 0, the file has layers. It is a layered file and the number of layers happens to be 1.
You are instructing Photoshop to save a TIFF.
You are also telling Photoshop to save the file with layers in a TIFF. So Photoshop is saying "OK, I am going to write Layer 0. This layer is 77 MB in size. Now, I am going to write a second copy of the file flat, with no layers, because TIFF files with layers are not understood by other programs. I will now write a flat copy of the file as well. The flat copy is 77 MB. So the TIFF will now be a flat copy, 77 MB, plus a layered copy, 77 MB."
You can instruct Photoshop not to include layers in a TIFF file. This will make your TIFF smaller.
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