The best KeyCastr settings depend on the audience and the capture size. A small overlay that looks elegant on a Retina display may be unreadable after a video is scaled down, while an all-keys overlay can overwhelm a technical demo. Start with the information viewers truly need, then tune the visual style.
Choose the right display mode
Command Keys Only
Best for most productivity and application tutorials. It keeps the overlay quiet until an important Command shortcut is used.
All Modified Keys
Best for development, design and editing workflows that rely on Shift, Option and Control as well as Command.
All Keys
Best for typing instruction or keyboard training. Avoid it when private text could appear.
Default or Svelte visualizer
Default
Use the compact presentation when several shortcuts may appear in sequence and you want a familiar overlay.
Svelte
Use the alternative visualizer when you prefer its layout or need to verify that the app is receiving events while troubleshooting.
Font size and contrast
Design for output resolution
Preview the overlay at the final video size, not only on the Mac display. Increase the font until modifier symbols remain recognizable.
Use contrast, not decoration
A dark bezel with light text works on most bright interfaces; a lighter or colored bezel may be better over dark applications. Keep the combination simple and legible.
Timing controls
Linger time
Set enough time for viewers to read a multi-key shortcut. Too long causes old commands to crowd the next action.
Fade duration and line breaks
A short fade feels responsive. Increase line-break delay only when the audience needs to see a sequence as one grouped action.
Mouse events and position
Show mouse input selectively
Enable mouse events when clicks explain the workflow. Disable them when they create unnecessary visual noise.
Reserve a clear zone
Place the overlay in a consistent corner and keep important menus, captions and code away from that zone.