Summary: We've added a few shortcuts to the Proof Viewer for Ziflow power users who prefer to use their keyboard for navigation.
Static assets
Left/Right Arrows: Switch to the next previous page of the asset
Ctrl + Scroll wheel: Zoom in/out
Click + drag: Pan asset image
Ctrl + Z / Ctrl + Y: Redo/Undo a markup
Video assets
J: Rewind 1x, 2x, 4x, and 8x
K (or Space): Pause/play a video
L: Fast forward 1.25x, 1.5x, 1.75x etc.
Left/Right Arrows: Skip one frame
M: Mute/Unmute
F: Fullscreen, and F/Esc: Exit fullscreen
Comment & markup actions
Ctrl + Alt + m (for Windows) or Cmd + Option + m (for Mac): New comment
Ctrl + Enter (Cmd + Return for Macs): Save comment
Up/Down Arrows: Next/Prev comment
While adding a comment, reviewers can use different types of formatting:
bold - Ctrl+ B (Cmd +B for Macs)
Italic - Ctrl + I (Cmd + I for Macs)
underline - Ctrl + U (Cmd + U for Macs)
strikethrough - Ctrl + D (Cmd + D for Macs)