HOW TO GET PDF FILE SIZE DOWN PDFUsing PDF software to create documents provides you with ways to ensure you give people the ability to read, share and work with the finished document. Click OK button and save the optimized PDF file.For Clean Up, check the Cleanup settings you want to optimize the document.Discard user data – this allows you to select any user related data that you want to remove.Discard objects – selecting this option will remove any unnecessary object settings.It takes the longest to process but yields the best results.Ĭhoose the downsampling method you want from the options or choose the Off item to turn off the option. The new pixel is an average of these neighboring pixels. With this type of downsampling, all pixels are compared and averaged to the center pixel. Bicubic Downsampling. Bicubic downsampling uses a weighted average within a given area to determine pixel value.You should only use it for things like charts. It’s the fastest of the three methods but gives you the lowest quality. Subsampling. Subsampling chooses the center pixel value within a sample area, then assigns it to the entire sample area.The average pixel value is then assigned to the entire pixel area. Downsampling. Downsampling averages pixels within a sample area.Here are the options PhantomPDF gives you and what they do: Increasing the size of the image is called upsampling, while reducing the size of an image is called downsampling. Rescaling creates a new version of an image with a different size. What is rescaling and what do the options mean? You can also select from downsampling, subsampling and bicubic downsampling to make them smaller. Color/grayscale will give you more detail in the image, however, it will be larger than monochrome (aka, black-and-white). If file size will be reduced, however, you have the ability to set the settings for color/grayscale and monochrome images. You can find out quickly if this is an issue in your file by checking the option “Optimize images only if there is a reduction in size.” If you set this option, the images will not be optimized when there are no reductions. Images – like any other file, images tend to add to overall file PDF size.To do so, choose Unembed Fonts to remove embedded fonts. The optimizer allows you to select which fonts you wish to embed, leaving out those that aren’t used. Unfortunately, adding all of these fonts to the finished file can make it larger.
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