SVG Viewer renders an SVG file or snippet, shows its dimensions, and lets you recolor it visually without hand-editing the XML. It's built for quick checks and simple tweaks, like changing an icon's color, not full vector drawing.
No. SVG Viewer is built for viewing and recoloring, not freeform shape editing. For moving, resizing, or redrawing paths, you'd need a dedicated vector editor; this tool covers the common case of just wanting different colors or a quick look at the code.
SVG Viewer renders the SVG as an image rather than injecting it into the page, the same technique browsers use for an <img> tag, so any scripts embedded in the file never run.
Only fill and stroke values are detected, since those are what most SVGs use for color. Colors set through CSS classes in a separate stylesheet, or through more unusual attributes, won't be picked up automatically; you can still edit those directly in the code.
No. Viewing, recoloring, and exporting all happen locally in your browser. Nothing about your file is sent to a server.