PDF is a specification that supports many different content types. Compression is governed by the application that created the PDF, and different tools use different strategies to balance PDF file size against image quality. If you have an existing PDF and you want to reduce the size, you can use tools like Compress Pdf Online DC, Compress Pdf Online Document Cloud, or Apple Preview to create a new PDF from your PDF using Export or Save As. You can change how images in the PDF are stored, which can lead to a smaller PDF but can lead to a loss in image quality. Bitmap images (1-bit like document scans) often come from a scanner with no compression on the pages. These are good candidates for saving with compression, as the compression techniques typically retain image quality using LZW compression. Greyscale and color images often are compressed at the time the PDF is made, so any additional compression will be ineffective or will result in quality loss. The PDF format can include structured text, but many PDF creators do not know how to use this feature. Compress Pdf Online can infer document structure and can help optimize the text portion of the PDF as well as the image portion.
Conclusion What's your experience, if I can call it that (as I'm sure you've noticed). Do you remember what size files you would get with this solution? In other words, would the compression work for your needs? Do you know the name of the software you use? How do you compress a Word document or a PDF file? What do you know about the problem's solution? Are there other solutions you've noticed? Or, perhaps, if I'm not too familiar with your software, could you point me in the direction to a quick reference I'd like to read? Here are the links to some other online solutions to PDF conversion problems.