Viewerframe Mode Refresh Top //free\\ 🆓

Most professional image viewers let you toggle this behavior.

By using refresh top mode, you send only the dirty rectangle coordinates for the top 20% of the screen (where the live graphs live). The bottom 80% (static logos or menus) never redraws, conserving bandwidth. viewerframe mode refresh top

: The term comes from a Google Dork used to find insecure Sony/Axis webcams. Most professional image viewers let you toggle this behavior