対応表

大体以下のような感じで対応しています。
ちなみに、InkscapeSodipodiというソフトで検証しています。

要素名
属性/詳細
defs  
g fill, fill-opacity, id, opacity, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform
line id, opacity, stroke, stroke-linecap, stroke-opacity, stroke-width, transform, x1, x2, y1, y2
linearGradient gradientTransform, gradientUnits, id, spreadMethod, xlink:href, x1, x2, y1, y2
path d, fill, fill-opacity, id, opacity, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform
・3次ベジェ曲線('Q','q','T','t')は、2次ベジェ曲線で近似
・'A','a'には非対応
polygon fill, fill-opacity, id, opacity, points, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform
polyline fill, fill-opacity, id, opacity, points, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform
radialGradient cx, cy, gradientTransform, gradientUnits, id, r, spreadMethod, xlink:href
・'fx','fy'属性は無視(将来的には対応予定)
rect fill, fill-opacity, height, id, opacity, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, width, x, y
・rx,ry属性が指定されている場合は、結合を「丸型」にする
stop offset, stop-color, stop-opacity
svg fill, fill-opacity, height, opacity, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, viewBox, width
symbol fill, fill-opacity, id, opacity, stroke, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, viewBox
use

height, id, transform, width, x, xlink:href, y
・文書内の参照のみ


属性名
 
Paint fill ・パターンには非対応
fill-opacity  
opacity  
stroke ・グラデーションには非対応(将来的には対応予定)
・パターンには非対応
stroke-linecap  
stroke-linejoin  
stroke-miterlimit  
stroke-opacity  
stroke-width  
transform matrix  
rotate  
scale  
skewX  
skewY  
translate