: If the original had forms or links, test them to make sure they still function correctly.

: Zoom in on any photos or diagrams to ensure they aren't overly pixelated.

: Smaller files are much easier to send via email, as they are less likely to hit attachment size limits.

If you are evaluating if this specific file is a "good" example of compression, you can check the following:

: Compressed PDFs typically load and download much faster, which is especially helpful on mobile devices or slower networks.

: They take up significantly less space on your local hard drive or cloud storage services like Google Drive.