ApexGantt — Critical Path Highlighting

The critical path is the longest chain of dependent tasks. Any delay on a critical task delays the entire project. Critical bars and arrows are highlighted in red.

Critical task / arrow

Non-critical task

Linear chain — all tasks are critical

A → B → C → D. Every task is on the only path, so all are critical.

Parallel paths — only the longer path is critical

Start → A (10 d) → End and Start → B (3 d) → C (3 d) → End.
Path A is 10 days; path B+C is 6 days. Path A is critical.

Interactive — toggle critical path / drag tasks

Use the button to toggle highlighting. Drag or resize a task bar — critical path recalculates on release.