| A problem I see with those criteria is it is too open ended. Any image can be 300 dpi since that is really just a header setting and says nothing of the resolution unless you attach a physical size to it...
i.e. a 1800 x 1200 resolution image can be saved as 300 dpi or 100 dpi. At 300 dpi it is 4 x 6 and at 100 dpi it is 18 x 12.
However, at either dpi, the image is still 1800 x 1200 and will still have approximately the same file size.
Getting an image down to 1 MB requires either reducing the quality of the JPG file you are saving as (I assume this since 1MB is small relative to most other formats) or you need to reduce the resolution. I'm not sure that any software has a feature for reducing to a specific file size as opposed to a resolution and/or quality setting, but I could be wrong (it isn't something I've ever looked for). |