Darken Image

Darken Image

Darken one image by scaling its RGB channels, then generate a preview and download PNG.

Each RGB channel is multiplied by 1 − adjustment/100 and limited to 0–255. This cannot recover clipped highlights. Processing is local; keep the original because animation and metadata may not survive PNG export. The input limit is 25 MiB and 24 million pixels. Partially transparent RGB values may incur slight rounding; fully transparent pixels do not retain hidden RGB. Alpha is preserved.

RGB(100, 160, 240) × (1 - 25/100) = RGB(75, 120, 180)