Tips & shortcuts
Shortcuts: arrows nudge · ⇧+arrows nudge far · ⌫ delete · ⌘V paste image · ←/→ in preview.
Instagram reality check: every slide in a carousel is forced to the ratio of the first slide, so all exports here share one ratio. Max 20 slides, 8 MB each.
Gaps: a frame that isn't fully covered turns red with a ! badge. Close all gaps grows and re-seats every photo to fill the frames it already spans, so a nudged panorama snaps back flush.
Panorama tip: keep faces and text away from frame seams — the split lands right on the dashed lines.