Compressed JPEGs to Multi-Image PDF

I need a single, well-organized PDF created from a folder of JPEG photographs. Before you merge them, please apply sensible compression so the final file stays light without noticeable quality loss. Instead of dedicating one page to each picture, I’d like several images arranged on each page—think a clean, even grid that keeps everything readable and visually balanced.

Once finished, deliver the ready-to-share PDF and, if you used any specific compression or layout settings worth noting, a brief note so I can reproduce the process later if needed.