Affinity Designer Gradient Bad Quality When Resterized

[Bart123]

No matter what I try I can't seem to rasterize this gradient without resulting in a loss of quality. What am I doing wrong?

I need a high quality jpeg image for a print

 

green.afdesign

[Bart123]

I've noticed that the end result of an image is the same when I rasterize my FX layer and when I try to export a jpeg

[NathanC]

Welcome to the forums @Bart123 apologies for the late response,

I'm assuming that you're referring to the visible gradient banding when the contents are flattened on export to JPEG? I believe this comes down to similar 8 bit limitations described in the thread below.

Following the same guidance to add Gaussian Noise to help Dither/blend the gradient in the final output can help, but you'll need access to Photo 2 to initially add the filter. I've attached a copy of your file where I rasterised the Gradient rectangle and then added a noise filter, which helps reduce the banding on output to JPEG. You can however open this file in Designer and adjust the filter.

4% Gaussian Noise.afphoto