Short answer: Canvas cannot normally list your installed Chrome extensions. Canvas Ninja runs locally and does not announce itself to Canvas.
| Question | Answer | Important limit |
|---|---|---|
| Can Canvas see installed extensions? | No normal web API exposes that list. | A school-managed device may have separate management software. |
| Can Canvas see tab-switch events? | Yes, if not blocked. | Privacy Guard targets these events. |
| Can proctoring tools add detection? | Sometimes. | Lockdown/proctoring tools are different from Canvas alone. |
For Reddit-style concerns, the practical question is not whether Canvas sees the extension name; it is whether your quiz log still shows suspicious focus-loss events. Use the Professor View Simulator to understand that difference.