How can I batch resize images to a file size of 1 meg?

I'm not the most technically literate mac user and would gratefully receive any help please.
I have been asked to reduce lots of images of various large file sizes and dimensions to 1 meg. I am using Photoshop CS4 and am aware of the 'Image Processor' function under 'scripts' unfortunately it only allows me to adjust the image dimensions, but I need to reduce the file size so that every image is 1 meg and at 300 dpi, it doesn't matter about the image dimensions.
Thanks so much!
Jess

You omitted to name the file format you want to use.
If you use any compression the task is far less trivial than you might think.
Trying to predict the effect of the compression (even if it were non-destructive) is not always sensible so the viable approach may be to save, check file size, if above intended one change dimensions, save, check file size etc.
I think I have come across thread/s on this in the Scripting Forum but I can’t remember anyone ever posting a finalised Script for this.

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How can I batch resize images to a file size of 1 meg?

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