Compress Scanned PDF: Reduce Image-Heavy File Sizes
Scanned PDFs are mostly images and can be huge. Learn how to compress scanned PDFs using image quality settings, DPI reduction, and JBIG2 encoding.
Published:
Tags: pdf, developer-tools, compression, scanning
Compress Scanned PDF: Shrink Image-Heavy Documents Scanned PDFs are the largest files in most document collections. A scanner set to 300 DPI in full color produces pages that are 500 KB to 1 MB each. A 50-page scanned contract or report easily reaches 30–50 MB — too large to email, slow to download, and expensive to store at scale. Fortunately, scanned PDFs compress very well because the content is all images, and images have substantial room for size reduction without visible quality loss. Why Scanned PDFs Compress So Well Scanned PDFs consist of image pages — typically JPEG or TIFF files embedded in the PDF container. There is no vector data, no font data, no complicated document structure. The entire file size is determined by the embedded images. This means two powerful compression…
All articles · theproductguy.in