Does the fake have to be a valid JPEG file, or just a file whose name ends with .jpg? The latter would be particularly easy to do.

If you want to produce a valid JPEG of a certain size, you play with the quality setting. It's trial an error. The amount of colours in the image will have an impact. You could also add JFIFEXIF tags to the image to increase its size.

Update: JFIF is the .jpg file format. EXIF is what the tags are called.

In reply to Re: How to create JPEG of specified size by ikegami
in thread How to create JPEG of specified size by Limbic~Region

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