A PDF file contains the objects making up a PDF document along with associated structural information, all represented as a single self-contained sequence of bytes. Sometimes PDF files are too large in size, which contain many disturbances that are unnecessary to many readers particularly when they want to download a PDF File from a web. Even though PDFs have become quite popular on the Web, many PDFs used in web sites are designed for high quality print output and are not optimized for the Web. Besides this, PDFs designed for Web use also can have a wait problem, weighed down with excess fonts, change histories, and unoptimized images and forms. Hence PDF files need to be optimized. Optimizing PDF files for the Web can significantly reduce their size and boost display speed, saving bandwidth and user frustration, and can be distributed efficiently.
There are two main ways recommended to you to optimize the PDF file namely,
Reducing the file size
Linearizing the PDF file for fast web view
We can use any available advanced PDF Tool to remove unnecessary objects from the PDF file to reduce the PDF file size and also to linearize the PDF file.
The redundancy objects in a PDF include:
Metadata: general information of a PDF file, such as the document's title, author, and creation and modification dates are included in this.
Thumbnail: A PDF document can define thumbnail images representing the contents of its pages in miniature form.
Embedded file: It is the embedded file inside the PDFs.
Bookmark: It is an outline displayed on the screen allowing the user to navigate from one part of the document to another.
Comment: Users can add comments to their PDF files.
Private data: A private data can be included in a PDF document for its own use.
Named destination: A destination is referred by means of a name object.
Now there are many advanced PDF softwares available which provide many effective settings to obtain reduce PDF file size.