The dots per inch (DPI) of the scanned image is often the primary cause of a large PDF file. By default, most scanners record images at 300 DPI, which is the minimum DPI for any image that is printed after scanned. However, for a PDF that is for screen reading, the DPI should be 72.Many scanned files are saved as PDF. And as we know, the scanned files are multi-pages images with a relatively higher DPI. Most of the scanners scan files at 300 DPI, while the recommended web-friendly image should be at a DPI of 72. This is just the reason why a scanned PDF is so big in size.

How do I reduce the size of a scanned file?

Scan your document at a lower resolution (96 DPI). Crop the image to remove any empty space around it. Shrink the image. Save the file in JPG format instead.

How do I reduce the size of a scanned email?

Why are some PDF files so large?

Why are my PDF files so large? PDFs are usually noticeably large when a few specific things happen. First, PDFs can be oversized because one or more fonts have been embedded and subset inside that specific PDF file. In fact, adding a single font to a PDF document can sometimes increase the file size substantially.

Why is my scanned document too big in size?

Below are the most common causes for a scanned document to be too big in size when saved as a PDF file. Most users will notice the PDF is too large when they try sending the PDF in e-mail and realize it exceeds the allowable size.

Why is my PDF file so big?

DPI The dots per inch (DPI) of the scanned image is often the primary cause of a large PDF file. By default, most scanners will scan images at 300 DPI, which is the minimum DPI for any image that is printed after scanned. Because most scanned objects are text-only documents, they do not need to be in color.

How to increase the size of a scanned PDF file?

As I increased the dpi of the scan, the scanned pdf linear size increased in proportion. The workaround I use is to print to pdf from the Adobe Acrobat Reader, with the “Fit to Page Size” button selected. With my printer output set to 8.5″x11″, both the linear dimensions, and the file size in MB returns to sanity.

How can I reduce the size of my scanned images?

1. Lower the scanning resolution. The lower the resolution the smaller the file size. 2. Save your scanned images as .JPG . This will compress the file without losing much quality.