You can change most of these in Settings › Shortcuts.
Double-click a shortcut and press the new combination. Assigning a combination already used by another configurable action leaves that action unassigned. Restore Defaults resets all custom shortcuts.
Editor
Shortcut
Action
⌘/
Toggle the Markdown lens
⌃⌘S
Show or hide the library
⇧⌘F
Search across Library notes
/
Insert a block (at the start of a line)
⌘F
Find
⌥⌘F
Find and replace
⌘G / ⇧⌘G
Next / previous match
⌘= / ⌘-
Zoom in / out
⌘0
Actual size
⌘-click
Follow a link or footnote
Tab / ⇧Tab
Next / previous table cell
Formatting
Shortcut
Action
⌘B
Bold
⌘I
Italic
⇧⌘X
Strikethrough
⌘E
Inline code
⌘K
Link
⌥⌘0
Body
⌥⌘1
Title
⌥⌘2
Heading
⌥⌘3
Subheading
Tables
With the caret in a table cell:
Shortcut
Action
⌥⌘↑ / ⌥⌘↓
Insert a row above / below
⌥⌘← / ⌥⌘→
Insert a column left / right
⌥⌘⌫
Delete the row
⌥⇧⌘⌫
Delete the column
Apple Intelligence
Shortcut
Action
⇧⌘W
Writing Tools for the selection
⌘↩
Generate or continue at the caret; press again to keep