Tiling apps and browser split-views put whole pages side by side. SplitWeb crops: drag a box around the region you care about and the pane keeps only that, scaled up to fill it. A chart, a ticker, one panel. It renders the real page live underneath — a WKWebView, not a screenshot and not an iframe — so logins stick and prices keep ticking on their own. Crops survive resizing: the same region rescales instead of drifting elsewhere. macOS 14+. Free to try for 14 days.