Created attachment 170250 [details] screenshot of SVG image and gwenview menu where is "Save As" option placed It is commonly know fact that any image viewable in gwenview can be converted to mostly used formats like jpg, png etc. But the same is not applicable to the SVG format files. gwenview is able to show the SVG image but not able to save the image in any other format. Please look into the matter.
The fact that Gwenview cannot generate SVG files is deliberate. SVG files are very different images, thet do not work on e.g. pixels, but on geometrical properties ((here is a circle with radius r at position x,y)). For those, one needs an SVG editor like Inkscape. Generating them from PNGs or similar is non-trivial and not within the scope of Gwenview.