What is Reduce file size — images & PDFs?
TL;DR: Shrink44 reduces file size by iteratively binary-searching the optimal quality / DPI to hit your specified KB or MB target.
Most online compressors give you a slider and hope for the best. Shrink44's file size reducer works the other way around: tell it your target size in KB or MB, and it iteratively binary-searches the optimal encoding to hit it.
This is invaluable for visa applications, government KYC forms, upload portals with strict caps (e.g. 200 KB photo, 1 MB document), and email attachment limits.