Size of layer in mb

Thank you all for your input. I think what I will do is run the process again. Adding each graphic, transforming and saving it. Seeing how much the psd grows and see if I can find the issue there. If I find anything interesting, I will definitely report back to the forum. 

You can select all your layers and then go to the menu layer > new artoboard from layers IT will enclose all elements event those out of sight.

My file sizes are blowing out

Got any stats? One person's blowing out is another person's fully editable archival master full of useful layers and Smart Objects.

Do you mean for storing them locally or for sending them to clients or elsewhere?

If it's just a local storage issue, I would keep the files as they are and invest in bigger TB SSD drives.

If your question is really how to optimize your files, try any of the blogs which offer tips:

For example: https://creativemarket.com/blog/the-best-tricks-to-reduce-photoshop-file-size

Keep in mind that some tips (such as rasterizing Smart Objects), while useful for portability, are irreversible and not in the best interests of archiving files. You never know if you'll need to edit the Smart Object in future.

I was wanting to know which layers were doing it.

The interactions of the various layers, layer styles, masks, channels and whatnot can be infinitely complex and in order to find out which contributes the most data you'd essentially have to re-create the whole of Photoshop as a plug-in that analyzes those interactions on a pixel-by-pixel basis. That would be insane and nigh on impossible. Even just pasting in an image at full size does not simply increase the file size by the amount of the original (uncompressed and decoded) source file... As the others said, all you're ever gonna get is the current overall memory usage and an estimate of what the file will be on disk when saving in native PSD format, but that's as good as it gets. The rest is just experience.

Mylenium

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@henry22453428ow9z wrote:

I would like to know the size of a layer. My file sizes are blowing out and I was wanting to know which layers were doing it.

Are there smart object layers?

Are there vector layers pasted from say Illustrator?

You can select each layer and CMD/CTRL + T to transform and take a look at the bounding box to see if layer content is unexpectedly extending beyond the canvas.

There is also my Active Layer Inspector script:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/could-you-select-all-layers-sequentially/td-p/11732510/page/4#U12078337

"The bottom left-hand corner and pushing f8 for info do not seem to be correct"

These sizes are final uncompressed image sizes and have nothing to do with how many layers you have and what's on them. Layers don't really have defineable sizes, per se. Yes, having several working layers will add to the overall size of a PSD file, but it has nothing to do with the final flattened image size. Rather, the size of your image is based on the number of pixels multiplied by the bit-depth, and what you would expect if your file was exported as flattened image to a non-compressed format (e.g. TIFF).

As an example,  for an 8" x 10" image at 300ppi in RGB you would be looking at 21.7MB, give or take, oe about 27 MB in CMYK.

Once you save as a compressed format, like JPG, you can reduce these sizes dramatically.

So, I guess it depends on what you are seeing and what you are expecting?