Photoshop: saving a psd to jpg changes the size automatically. cant save in original size

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Im trying to send large file for reproduction. I save at 4.5 MB, but it saves it to 864 Kb no matter what I do. The receiver says the image is too small. If I open the image in photoshop it is the right size but if I just look at the size while it is in thumbnail it is the smaller size. If I paste it into a mail it is the smaller size. Help !!!
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lynda braun

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Posted 6 years ago

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lynda braun

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I forgot to mention, Im saving as a jpg
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Chris Cox

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Which application are you using?
Which version?

The file size depends on the compression options chosen and the content in the image. The size in memory will be greater than the size on disk because of compression.
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lynda braun

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Im not sure what that means in terms of the results. Why cant she open it to the original size if that is he way Im sending it?
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Chris Cox

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That question doesn't make any sense.
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lynda braun

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Im on a mac and CS4 and saving in PS as a JPG. Ive tried both going to save for web and also save as jpg. For me, it opens after download to my desktop to the correct size, but the receiver who is an arts writer so gets a lot of images sent to her, keeps telling me they are coming to her too small. The thumbnail reads as very small until I open it. Thaks. Im tearing my hair out.
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Chris Cox

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It sounds like you are confusing the size of the image in memory with the size saved on disk.

The image may be 10 Meg in memory, but 200k on disk because of compression.
And the amount of compression will depend both on the settings you choose when saving, and the content of the image.

And yes, the JPEG will be smaller than the PSD - because PSD is a lossless format (all the quality is preserved), while JPEG is a lossy format (throws away some quality to get better compression).

And if the file is 200K on disk, it should still be 200K after emailing it (unless you're using ancient AOL versions that recompressed images).