For files with a single bitmap image, the extension is unlikely to speed up setting the attribute - for other use cases (e.g. files with several images, or with image masks hidden in the <defs> section) it might help to be able to set the property on SVG root itself, or in one of the other scopes.
For files with a single bitmap image, the extension is unlikely to speed up setting the attribute - for other use cases (e.g. files with several images, or with image masks hidden in the <defs> section) it might help to be able to set the property on SVG root itself, or in one of the other scopes.