Inkscape filter presets, called "Shadows and Glows" from the filter menu, including: Cutout Glow Dark and Glow Drop Shadow... Emergence In and Out Inset Drawn with inkscape 0.92 in 2017 February.
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Shadows and Glows free icon was designed by Lazur URH for icons Png and presented to its users.
Lazur URH
2/7/2018