Rasterize SVG to inline PNG (for visual verification) via mcp-svg-render — supports inline markup, file input, retina scaling, and disk save

{
  "server": "mcp-svg-render",
  "version": "0.1.2",
  "transport": "stdio",
  "install": "npm install mcp-svg-render",
  "entry": "dist/index.js",
  "tools": ["render_svg"],
  "calls": [
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><circle cx="50" cy="50" r="40" fill="steelblue"/></svg>"
      },
      "result": "image/png 1553 bytes, text: Rendered 100x100px PNG",
      "ms": 5288
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg ...gradient+text...>"
      },
      "result": "image/png 21381 bytes, Rendered 300x150px",
      "ms": 6287
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg ...rect...>",
        "scale": 2
      },
      "result": "image/png 873 bytes, Rendered 100x100px (2x)",
      "ms": 5442
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg ...circle...>",
        "background": "#ffffff"
      },
      "result": "white bg applied",
      "ms": 5594
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg ...>",
        "outPath": "/tmp/svg-test-output.png"
      },
      "result": "saved + inline, file verified on disk",
      "ms": 5839
    },
    {
      "tool": "render_svg",
      "args": {
        "path": "/tmp/test-input.svg"
      },
      "result": "file-based input works",
      "ms": 5423
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "this is not svg"
      },
      "error": "SVG data parsing failed cause unknown token at 1:1"
    },
    {
      "tool": "render_svg",
      "args": {},
      "error": "Provide svg markup or a path to an .svg file."
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg viewBox="0 0 200 100">..."
      },
      "result": "viewBox-only works, 200x100px",
      "ms": 6226
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg ...flowchart...>",
        "scale": 2
      },
      "result": "800x600px 13341 bytes",
      "ms": 6174
    },
    {
      "tool": "render_svg",
      "args": {
        "path": "/tmp/does-not-exist.svg"
      },
      "error": "ENOENT: no such file or directory"
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "<svg w=20 h=20>",
        "scale": 8
      },
      "result": "160x160px 2219 bytes",
      "ms": 5271
    },
    {
      "tool": "render_svg",
      "args": {
        "svg": "red-rect",
        "path": "/tmp/blue-rect.svg"
      },
      "result": "svg takes priority over path",
      "ms": 5630
    }
  ],
  "success_rate": "100% (14 OK + 2 correct rejections)",
  "total_calls": 16,
  "p50_ms": 5594,
  "key_gotcha": "~5-6s per call due to resvg WASM overhead"
}