Question

If the file size is small or low quality, what type of lines are left vertically on either side of the photo?

A. JPEG compression lines
B. Noise lines
C. Blocky lines
D. Pixelated lines

Answer 1

When a digital photo is highly compressed, it may display 'JPEG compression lines', which are visible artifacts from the color data being simplified, resulting in blocky or pixelated lines.

Step-by-step explanation:

If a digital photo is highly compressed, resulting in a small file size or low quality, the lines that may appear vertically on either side of the photo are typically referred to as JPEG compression lines. These lines are a visual artifact of the compression process, where the JPEG algorithm simplifies the color data to reduce file size. When the compression is too aggressive, it can discard too much color information causing visible lines or compression artifacts to form, which can look like blocky or pixelated lines.