Cute kitten on a shoulder at 15 pixels width resolution example of quantization noise

Full size 54 × 30 pixels 4K? 1080p? What does it all mean?
Cute kitten on a shoulder at 15 pixels width resolution example of quantization noise

Cute kitten on a shoulder at 15 pixels width resolution example of quantization noise

Cute kitten on a shoulder at 15 pixels width resolution example of quantization noise