How to convert .pdf file to .jpg?

i want to upload my pdf files on a web page, but they are too big. I want to convert them to either .jpg or .png (.jpg is preferred) and each page s size is best around 200k. I have approximately 200 pages. All the software I ve found only converts the files without compressing them . I have already tried... show more i want to upload my pdf files on a web page, but they are too big. I want to convert them to either .jpg or .png (.jpg is preferred) and each page s size is best around 200k. I have approximately 200 pages. All the software I ve found only converts the files without compressing them . I have already tried pdfconvert,I m hoping to find something free.Is there any software that will do this for me?
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