Working backward from a named kilobyte limit
Portals publish 100 KB, 200 KB, 300 KB, 500 KB, or 1 MB because their storage and virus scanners are cheap. You cannot promise an exact byte count from one pass — Ghostscript produces a smaller file, not a slider to 199,999 bytes. The practical method is Maximum, measure, then drop pages or re-scan if you are still over.
Read the form before you compress
Some sites count only the PDF; others count the whole application ZIP. Confirm whether they mean 200 KB or 200 KB per page. A two-page resume at 180 KB is fine; a 12-page visa pack at 180 KB per page will still fail a 1 MB total.
When Maximum is still not enough
Photo scans of certificates resist tiny caps. Split off unused pages, photograph at a lower DPI, or export text-only pages from Word instead of a camera capture. Light and Balanced will not beat a 100 KB ceiling on a color scan.
After you hit the number
Open the download and confirm type is still readable. If a job site later asks for a higher-quality copy, keep the original locally — this tool deletes uploads after download.