Compress a PDF to under 200KB
One of the tightest caps you'll run into — realistic mainly for a single page. Read the guidance below before you spend time chasing 200KB on a multi-page document.
Is 200KB realistic?
Be honest with yourself about this one before you spend ten minutes fighting the quality slider: 200KB is roughly a fifth of the already-tight 1MB cap, and for anything beyond a single page it's a genuinely difficult target to hit while keeping the result legible. If your document is 2+ pages, the more productive question is usually "does the portal actually need every page?" — a lot of multi-page certificate or ID uploads only need the front page or the signature page specifically, and Split PDF can pull just that one out before you compress it.
For a genuine single page, 200KB is achievable — start the quality slider around 10-15% for a scanned document. Typed or printed text tends to hold up reasonably well even at this level, since sharp black-on-white edges compress efficiently. A photo, a signature, or anything with fine detail will show visible quality loss at this setting — check the downloaded file before you submit it anywhere that matters.