Last update: June 8, 2023
Why is the PDF file not reduced?
Select View details on any current MS Office or PDF file in NXPowerLite, to see a size audit of the content inside and what might be preventing further reduction. 👇
In this example, the majority of the size is accounted for by 912 images. Once you know what the size is made up from, you can establish if the file is optimal, or if further reduction might be achieved.
What content is still large?
Content is organized by size, with the largest items listed first. The number of items are indicated in parenthesis, for example, Images (912) = nine hundred and twelve images.
Images
Most images compress very well with NXPowerLite. If the majority of the file is images, then you can possibly make it slightly smaller still using the Strong Compression profile in NXPowerLite. This will compress the images to smaller target sizes.
For scanned PDFs you will often see that the number of images is the same as the number of pages. This is because each page is saved as a full-page image.
Note: Compressing scanned PDF images too much can affect legibility of text.
Content streams
Compression of content streams is not usually possible. You need access to the original editing software that created the PDF, so you can try changing the output settings.
Other
Follow the tips in this guide to why PDF files are so big to try and manually reduce the file.
Don’t see View details?
If you don’t see the View details feature in your version of NXPowerLite, you probably need to update to NXPowerLite Desktop 11.
Two final things to check…
If Size per page is below 100 KB then significant further reduction it is not very likely.
Sizes are listed in KB in NXPowerLite, anything below 1,000 KB (1 MB) is reasonably small and should be easily transferred by email. Most email caps have risen to 5 - 10 MB even in restricted scenarios, although there are still some areas where the limits are much tighter.
If you come across anything in a PDF that is making it too big and you can’t fix it - then please feel free to contact us - we love hearing about new content that is causing size issues in PDF files.