Bitmap Editing: basic image filters (hue, saturation, brightness/levels)
the ability to apply image filters and treatments such as "hue, saturation, levels, etc".
If I drop an image in a shape or a rectangle, I can only change the transparecny from the appearance menu. But most of the times we need to darken or to increase the brightness of an image to use it as background for texts, to avoid that the parts too dark or too bright of the image make the text hard or impossible to read. For black coloured text we usually need to increase image brightness, while for white coloured text we need to decrease it. A slider is needed just below the transparency one, that act on the image brightness (in a non destructive way).
Agne Ødegaard commented
basically the title