Desktop

1. Activate Developer Mode

1. Open User Settings

2. Open Appearance

3. Scroll Down

4. Activate Developer Mode

2. Select the right ID

1. Right click on the users avatar.

2. Click Copy ID

3. You now have the ID in your clipboard.

Make sure you click Copy ID on a Profile Picture (or Username), not on a message, server, or channel. Doing so will result in just getting information from the Generic Snowflake