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Pixel
Definition
A small tracking script that monitors visitor behavior.
In Plain English
A pixel is like a motion sensor—it detects and records when someone passes by.
Real-World Example
The Facebook pixel tracks who visits your site so you can retarget them with ads.
Why It Matters for Your Work
Pixels enable retargeting, conversion tracking, and audience building for advertising.
Common Mistake
Installing pixels without understanding privacy implications. Pixels collect user data.