View zoom only changes what you see on screen. The page and the exported file stay the same size. A scroll gesture is one undo step.
V Select
C Cut
B Speech bubble
T Thought bubble
K Caption
S Sound effect
Shift Snap a cut horizontal or vertical
Enter or double-click finishes a cut and returns to Select. Hold Shift to keep cutting
Esc cancels a cut, or clears the selection
In Select, hover a gutter and drag its handles to move a point or pull a midpoint into a new bend. Delete or the × removes just that segment
Scroll Zoom the selected picture while the pointer is over it
Ctrl+Scroll Zoom that picture toward the pointer
Alt+Scroll Rotate 1° per notch
Ctrl+V Paste a clipboard image into the selected panel, or into the bank, when that image is newer than a copied element
Shift+Alt+Scroll Rotate in 15° steps
Shift while dragging the handle snaps to 15°
Side panel: flip horizontal, flip vertical, turn 90°, reset rotation, reset framing
Ctrl+0 Fit the page in the window
Ctrl+1 100%, actual pixels
+ − Zoom the view in or out
Ctrl+Scroll Zoom the view toward the pointer, unless the pointer is over the selected picture or lettering
Corner menu: Fit, 50%, 100%, 200%, 400%
Space+drag Pan
Middle-mouse drag Pan
Scroll Scroll the page, except over the selected picture
The strip under the page switches pages. Each page has its own layout, pictures, and lettering
Add page, Duplicate, and Delete are on that strip. Drag a number to reorder
Export PNG and Export JPG save the page you are looking at. All PNG and All JPG download every page in one zip
The image bank and saved styles are shared. Copy and paste works from one page to another
Drag to move. Double-click to edit. Drag handles to resize, rotate, or move a tail
Ctrl+Scroll Resize the selected lettering
Alt+Scroll Rotate it 1° (Shift snaps to 15°)
Warp in the side panel: Arc, Wave, or Bulge, plus a strength slider
Alt+drag a corner skews the words. Ctrl+drag a corner bends them in perspective
Delete Remove it
Save style keeps the look. One click applies it, or places a new item
Ctrl+C Copy the selected lettering or picture
Ctrl+X Cut the selection
Ctrl+V Paste it, offset a little more each time
Ctrl+D Duplicate the selection
Ctrl+Z Undo
Ctrl+Y or Ctrl+Shift+Z Redo
Delete or Backspace Delete the selection
Ctrl+S Save the project
Esc Close this panel, cancel a cut, clear the selection, or return to Select
? Open this panel