Convert PDF file from MB to KB

[Aria32331893y3x0]

Could anyone please guide me for how can one convert a PDF file which is in MB to KB?
I have to submit a government document for which the max size should be 1000KB. (It is not accepting anything apart from KB 😅)
I have been trying all sorts of converters and different methods but had no luck. 

If Acrobat Pro can't provide this functionality then why should anyone pay for it?

[try67]

There's no magic solution for this. It might not be possible at all, depending on the size of your file and its contents.

The main culprits are usually fonts and images, though. Minimize or remove those entirely to get your file-size as small as possible.