Quality-first compression, not “smallest possible”
People who search this phrase have already been burned by a screen preset that turned a scan into soup. This page is the opposite workflow: start gentle, inspect a page of fine print, then step up only if the attachment still fails.
Light vs Balanced vs Maximum
Light re-saves structure and metadata without rasterizing text — use it on native Word or InDesign exports. Balanced applies ebook-style Ghostscript to page images so medical charts and stamped pages stay legible. Maximum is /screen-style: fine for a job portal, wrong for a judge who must read 8-point footnotes.
Sample one page first
If you have a 400-page archive, compress a single representative page (or a short extract) before you commit the whole stack. Unreadable output wastes a Pro VPS run and your time.
Fonts and vectors
Light keeps embedded fonts where the file allows. Aggressive raster presets can flatten type into pixels. Architectural line work belongs on Light; camera photos of drawings belong on Balanced, not Maximum.