Want to know how to take screenshot on Snapchat without them knowing, then read the post given here. You can try any of the following steps.

1. Clicking a picture, from another device.

2. Mirroring app feature.

3. By asking Google Assistant.

4. Screen recording.

5. Using apps like Private Screenshots.

6. Snapchat desktop version.

7. Use third-party apps or enable airplane mode.