SmartLine is a scroll progress bar and section navigator that turns long pages into guided, interactive experiences — with markers, labels, reading time, keyboard navigation, and full responsive control.

SmartLine tracks scroll progress across the full page, between anchors, or within any custom element. Add markers at regular intervals, at heading tags, or at custom CSS selectors — with Even Spacing for adaptive fill speed on uneven layouts. Enable clickable markers, draggable labels, arrow navigation, keyboard shortcuts, and numbered step indicators. Three label modes (static, dynamic, tooltip), estimated reading time, URL synchronization, and Visible Only in Range. Built for content-rich pages that deserve more than a plain scrollbar.