In Photoshop / Photopea you can select a layer and add an effect such as stroke, shadow, etc. In Gimp, you can do the same with filters... The inconvenience to

In Photoshop / Photopea you can select a layer and add an effect such as stroke, shadow, etc. In Gimp, you can do the same with filters... The inconvenience to me is that filters are immediately rasterized, so the effect becomes harder to change.