 PDF files can contain a bunch of different objects like bookmarks, links, annotations, form fields, javascripts, or embedded phones etc etc. Since there is so much you can do with PDF such as you can insert images into your document including interactive forms, embedding videos and audio files and applying encryption and with all this you may create a file that is too large to email. Your PDF file that contain many images and optimizing all of them can make a noticeable difference in making your PDF size smaller. Small size PDF documents are great for webpages, printing, archiving or sending through emails with PDF multi-tool. It only takes a few steps to optimize PDF document. How? Let us see. Alright, so before we go ahead let us check the file size of the document. So here you can see that this sample 2.pdf file is of 548kb. Now let us open the same file in PDF multi-tool. You can find the optimized document option in utility section. So let me scroll down and here it is. So let me click on this link. Now in this window you can see the option that what is the image format after image optimization and if PDF contain any images then what should be the image quality. Here the default is 25%. Now let us click on the process document button to generate updated PDF. So it will ask me to save the file. Let me click on save button and then it will ask you to open the result document. I don't want to open it. So let me click on know. Now here you can see that the updated PDF is generated. But let us check the file size of this newly generated PDF. So here as you can see that this newly generated PDF which is sample 2.optimized is now reduced to 212kb. So with PDF multi-tool you can shrink PDF files down by simply recreating the document. It simply strip out any unwanted space gobbling objects or remove unwanted tags and compress any pesky images further.