title: Ghostscript to compress a batch of PDFs
body: <p>I have no experience of programming.</p>
  
  <p>My PDFs won't display images on the iPad in PDFExpert or GoodNotes as the images are in JPEG2000, from what I could find on the internet.</p>
  
  <p>These are large PDFs, upto 1500-2000 pages with images. One of these was an 80MB or so file. I tried printing it with Foxit to convert the images to JPG from JPEG2000 but the file size jumped to 800MB...plus it's taking too long.</p>
  
  <p>I stumbled upon Ghostscript, but I have NO clue how to use the command line interface. </p>
  
  <p>I am very short on time. Pretty much need a step by step guide for a small script that converts all my PDFs in one go. </p>
  
  <p>Very sorry about my inexperience and helplessness. Can someone spoon-feed me the steps for this?</p>
  
  <p>EDIT: I want to switch the JPEG2000 to any other format that produces less of an increase in file size and causes a minimal loss in quality (within reason). I have no clue how to use Ghostscript. I basically want to change the compression on the images to something that will display correctly on the iPad while maintaining the quality of the rest of the text, as well as the embedded bookmarks.</p>
  
  <p><strong>I'll repeat that I have NO experience with command line...I don't even know how to point GS to the folder my PDFs are in...</strong></p>