File compression or data compression is the practice of reducing file sizes while preserving the original data. It helps in saving storage space and makes files easier to transfer over the internet.

You can easily reduce the size of a PDF using Adobe Acrobat or similar programs. Navigate to File, select Save as Other, and then choose Reduced Size PDF. This is one of the quickest methods to minimize PDF file size.

In Windows 10, you can compress multiple PDFs by going to Tools > Optimize PDF. Click on Reduce File Size and then Reduce Multiple Files. This will significantly minimize the files' sizes.

File compression tools like 7-Zip, WinRAR, and WinZip can help compress large files, even from 1 GB to 1 MB, using algorithms like DEFLATE or LZMA.

Popular software options for compressing files include WinZip, WinRAR, PeaZip, and 7-Zip. These tools change the file format during compression but allow easy decompression to regain the original file.

Whether you're a beginner in digital photography or a pro, data compression is crucial. Compressed digital images are much easier to handle and store.

Reducing file size generally involves removing information through down-sampling and image compression. While this makes files smaller, be cautious, as too much compression may result in quality loss.

To make a PDF file smaller for emailing, you can use the Minimum size setting while saving the PDF. Alternatively, use specialized PDF software to compress the file further before sending it.