What is a PDF?
As far as the electronic world is concerned, compatibility issues are now a thing of the past. Portable Document Format (PDF) helps you store, send, and receive files without having to worry about using different applications to suit your clients. PDF is a simplified page description language that uses compression algorithms to reduce file size. PDF files can be optimized to reduce file size to the minimum while still maintaining its original format. When documents containing a large amount of images are converted to PDF, the resulting file size can be quite large. Using the right compression technique can considerably reduce file size.
What is PDF Optimization
As a norm PDF readers improve with every version. As documents get larger the need for smaller file size is apparent. Optimization is the key to any good PDF. Image resolution, the type of image, the compression level, the fonts and how they are embedded, are the contributing factors to the creation of small PDFs. A superior set of algorithms gives the PDF the added ability to compress entire files. To create small PDFs for the web, bitmapped images and the number of fonts should be minimized while substituting vector based-graphics instead. Excess use of multimedia should be avoided at all costs.
PDF Optimization Techniques
Whatever method you use to create a PDF, optimization can be achieved with some of the following techniques. To start with, use images of a high quality while bitmap graphics should have the minimum of dimensions. Use vector images since they are perfectly scalable and take up lesser space than bitmaps. Do away with unnecessary fonts, as each embedded font can take up a lot of space. Reduce forms to half their size by removing unwanted information. Set the right color schemes for a color-based project. Wherever possible convert the PDF to grayscale when color is not necessary. For a web-based PDF you do not need to use complicated font faces and high resolution image since what you need is to convey information efficiently. Use these techniques and you can optimize your PDFs and still be able to maintain a reasonable output. Use the `Save As' option to save the PDF after you have made changes, so that you overwrite the original and reduce file size.