Perceptible Quality Loss of JPG/JPEG Compression

Q

At what JPG/JPEG compression level should I see perceptible quality losses?

✍: FYIcenter.com

A

In general, quality levels of 90% or higher are considered "high quality". At 90%, there is very little difference in smooth areas. But edges of objects are not as crisp as the original picture.

Quality level of 80% to 90% is "medium quality". At 80%, picture details are a little blurry.

Quality level of 70% to 80% is "low quality". At 70%, edges objects are no longer crisp and compression artifacts are visible.

Quality level of 70% and lower is "poor quality". At 50%, significant quality losses are visible around all edges.

The following image shows the perceptible quality loss of JPEG compression with a quality setting gradually decreased from 100% to 0% from right to left.
JPEG Quality Gradually Decreased

2013-11-04, 2603🔥, 0💬