The first reason is that one or more fonts are stored inside PDF document. Causes of File Size Increase Typically, there are two major reasons why PDF file size can be 'disproportionally' large. This means that number of pages cannot be used to measure how large or small a specific PDF file should be. Depending on internal file structure, content streams might occupy just a small percentage of the overall file size or almost an entire document. PDF File Size and Number of Pages The only part of the PDF file that is proportional in size to number of pages is 'content streams'.

Document overhead and various low level elements such as extended graphics states, structure info and etc.

Content streams (the actual text content of the document).

What PDF file is composed of? PDF file is composed from multiple components: It is crucial to understand the actual file size allocation between various PDF components before attempting to reduce the size of the specific PDF document or making any conclusions that file is 'too big' for the number of pages. Similar questions arise when splitting a PDF document into multiple files and discovering that resulting file sizes are not proportional to number of pages. Advanced tip: To export pages, you also can drag the selected pages from the PDF Reader Window to your desktop (or the Finder folder) to create a new PDF.Understanding PDF File Size PDF File Size Issue Quite often users are wondering why a specific PDF file is so big while it is just few pages long. If you save the output file(s) in the default PDF Reader folder, you can find them by visiting Home tab > Documents section > Extract folder.Ħ. Then click 'Save' to save them to the target location.ĥ. You can choose to save them in the default PDF Reader folder or a different folder within your Mac Finder. Set up the output folder to save the file(s). You can choose to save them as one single PDF or save each page as am individual PDF. If you select multiple pages, you can set how you want to save the pages. (When the page is selected, a blue border will appear around it.)ģ. Select the pages you would like to export and then click ' Extract' on the top menu bar. PDF pages will be displayed as thumbnails. Open a PDF file and click on the 'Page Edit' button in the top menu bar.Ģ. You can extract pages from an existing PDF document and use them in a new PDF.ġ. The Extract Page tool in PDF Reader provides a simple way to split a PDF document into two separate PDF files with the Extract Pages tool in PDF Reader.

How to change a pdf to a pages document