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Units of measurement


Junior Member
Hello, i created some images for a website.
I used Illustrator to make them, i save for web and devices and i choosed for example a width of 180 px and height of 540 px and JPG, and saved it from the web and devices illustrator option.
But when i go to the folder where i saved my jpg image file and go to properties the file appears with 775 px width and 2925 px height.

If i paste the image in Dreamweaver, it doesn't appears as 180 px widht and 540 px height.
I don't understand why if i choose from the illustrator opiton a specific unit of measure when i go to see the file haves a different unit of measure.