How to avoid shrinking file size in Photoshop?

There is probably a simple way to avoid this but I really dont know photoshop too well.

I'm taking an image from Lightroom that I'm expanding the background via the crop tool and when I save the new jpg in photoshop the file is very small. Doesnt matter if I export it from Lightroom as a jpg or a tiff.

Is it the method of the crop tool making the file smaller even though I'm making the image bigger?

Or is it something I'm doing wrong when I save. As far as I know I'm saving it at the highest quality in photoshop.

Thanks in advance for any help.

Hmm, without knowing more specifically what you are doing, it's hard to give an answer.

So, when you say "I'm expanding the background via the crop tool", what exactly are you doing, and what are the pixel dimensions of the final image? You can find this out going to Image/Image size and they should show up in the Width/Height boxes if you have Pixels selected as the unit used.

You say you have the highest quality setting for your jpeg. Aside from the image dimensions/resolution and the Quality setting, the other thing that can have a real effect in jpeg compression is image detail or the lack of it. If you have large areas with no detail (such as a lot of blue sky) the compression will "get more mileage" with its compression (and result in a smaller file) than if your image was full of detail.

So, yes, there are a few variables that determine the size of a jpeg, whereas if you save as, say, a tiff you will have a bigger more easily predictable file size (it shows in the lower corner of your image preview screen).

majin tcz wrote in post #12969137
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I'm taking an image from Lightroom that I'm expanding the background via the crop tool and when I save the new jpg in photoshop the file is very small. Doesnt matter if I export it from Lightroom as a jpg or a tiff.

I would be interested in knowing what you mean by this. The crop tool isn't used to expand anything, but instead it is used to cut away pixels. IOW Reducing the Pixel dimensions by throwing away unwanted pixels, which will make your picture smaller. The more you crop the smaller it will get.
When you expand the crop box out to select the area of the picture you want to keep, anything(Pixels) in the shielded(shaded) areas will be discarded. it doesn't make that portion of the picture you just cropped larger.

What you would have to do if you want to make it larger again would be to enlarge the image when you export it to whatever file type of your choice.
In the export options make sure you uncheck the box "Don't Enlarge" and then choose the size / dimension you want.

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tkerr wrote in post #12973567
I would be interested in knowing what you mean by this. The crop tool isn't used to expand anything, but instead it is used to cut away pixels.

In PS you can do both.

I suspect the OP has dimension and ppi values entered in the crop tool in PS.
Clear those and cropping won't alter the size of the image.

Another way would be to go file > canvas size in PS and enlarge the canvas there.

René Damkot wrote in post #12976829
In PS you can do both.

This I know. Click "Front Image" and it automates crop and image size into a single click. Or you can just enter you own pixels dimensions and PPI

But,

René Damkot wrote in post #12976829
I suspect the OP has dimension and ppi values entered in the crop tool in PS.
Clear those and cropping won't alter the size of the image.

True, but the OP Is cropping with LR not PS.

On Edit:
The way it sounds is that he OP should probably crop with PS rather the LR if wanting to maintain the size.
do your LR adjustments without cropping, Move picture into PS and then Crop and save to jpeg from PS.
When you crop in PS and want the cropped image to be the same size as the original click "Front Image" and pull out your crop rectangle and click. The picture will be cropped and automatically resized to the original pixel dimension.. Or you can select the output dimensions and resolution you desire. E.g 1024 x 683 300 PPI.( or you can use a ratio in Inches. 1024x683 is = 4x6 or 8x12) Such as in the following example. No matter how much of the picture I crop the final dimension will be as predefined by me.

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tkerr wrote in post #12978390
True, but the OP Is cropping with LR not PS.

Question isn't concise enough to tell for sure.

OP needs to clarify a bit methinks

tkerr wrote in post #12978390
True, but the OP Is cropping with LR not PS.

The way it sounds is that he OP should probably crop with PS rather the LR if wanting to maintain the size.
do your LR adjustments without cropping, Move picture into PS and then Crop and save to jpeg from PS.
When you crop in PS and want the cropped image to be the same size as the original click "Front Image" and pull out your crop rectangle and click. The picture will be cropped and automatically resized to the original pixel dimension.. Or you can select the output dimensions and resolution you desire. E.g 1024 x 683 300 PPI. Such as in the following example. No matter how much of the picture I crop the final dimension will be as predefined by me.

Actually from the post title and the wording of the original post it sounds like the OP is sending an image from Lightroom to Photoshop and doing cropping there -- in Lightroom you don't resample with the cropping tool, but you can in Photoshop (although I prefer not to).

tonylong wrote in post #12978458
Actually from the post title and the wording of the original post it sounds like the OP is sending an image from Lightroom to Photoshop and doing cropping there -- in Lightroom you don't resample with the cropping tool, but you can in Photoshop (although I prefer not to).

From the following comment I get that he is cropping with LR first and then moving into PS.

majin tcz wrote in post #12969137
I'm taking an image from Lightroom that I'm expanding the background via the crop tool and when I save the new jpg in photoshop the file is very small. Doesnt matter if I export it from Lightroom as a jpg or a tiff.

Me thinks a little more clarification is needed also.

Sorry I havent been in the thread. No access to a computer.
I'll try to clarify.
When I was referring to making the background bigger via the crop tool that was in photoshop.
For an example of what I am doing I'll refer you to this link.
http://zackarias.com …anges-in-post-production/

My file size from Lightroom goes from lets say a 5mb jpg or like a 25mb tiff to a few hundred kb file after I save in photoshop.

I'm not too skilled with photoshop so I know there is something I'm not doing to maintain the same file size that I started with before I entered photoshop.

Pictures and arrows always work best with me

Thanks for all the help!!

One thing that would help is if you would get back to us when you have Lightroom and Photoshop open. Then, you can be specific about steps you are taking, exactly what you are seeing, following suggestions, and posting relevant screen shots so we can see what you are seeing and talking about. Otherwise we can only guess, and you aren't being hands-on!

majin tcz wrote in post #12987290
file size from Lightroom goes from lets say a 5mb jpg or like a 25mb tiff to a few hundred kb file after I save in photoshop.

What extension?

Also: as said in post #4 and 5: Make sure these boxes are empty: