Массовое изменение размера SVG-иконок

<svg width="16" height="12">
    <rect/>
</svg>

<svg width="16" height="16">
    <g transform="translate(2)">
        <rect/>
    </g>
</svg>

import argparse
import fnmatch
import sys
from pathlib import Path
from string import Template

import svgutils


def scale(src, width=None, height=None, dst=None):
    dst = dst or src

    origin = svgutils.transform.fromfile(src)
    width = width or origin.width
    height = height or origin.height

    move_x, move_y = 0, 0
    try:
        origin_width = float(str(origin.width).rstrip('px'))
        if width > origin_width:
            move_x = (width / 2) - (origin_width / 2)
    except (ValueError, TypeError) as exc:
        pass

    try:
        origin_height = float(str(origin.height).rstrip('px'))
        if height > origin_height:
            move_y = (height / 2) - (origin_height / 2)
    except (ValueError, TypeError):
        pass

    print(f"Converting {src} to {dst}: width: {origin_width} -> {width}, "
          f"height: {origin_height} -> {height}, move: {move_x}, {move_y}")
    svg = svgutils.compose.SVG(src)
    fig = svgutils.compose.Figure(width, height, svg).move(move_x, move_y)
    fig.save(dst)


def main(argv=None):
    if argv is None:
        argv = sys.argv

    parser = argparse.ArgumentParser(description='Resize SVG.')
    parser.add_argument('files', metavar="FILE", nargs='+',
                        help='files to scale')
    parser.add_argument('--width', default=None, type=float,
                        help='destination width of SVG')
    parser.add_argument('--height', default=None, type=float,
                        help='destination height of SVG')
    parser.add_argument('--pattern', default="*",
                        help='pattern for files to scale')
    parser.add_argument('--template', default=None,
                        help='output filename template')

    args = parser.parse_args(argv[1:])

    for src in args.files:
        src = Path(src)
        if not src.is_file():
            continue

        if not fnmatch.fnmatch(src.name, args.pattern):
            continue

        if not args.template:
            dst = src
        else:
            template = Template(args.tempalte)
            dst = Path(template.safe_substitute(
                full_name=str(src),
                drive=src.drive,
                root=src.root,
                anchor=src.anchor,
                parent=src.parent,
                name=src.name,
                suffix=src.suffix,
                stem=src.stem,
                as_posix=src.as_posix(),
                as_uri=src.as_uri(),
            ))

        try:
            scale(src, args.width, args.height, dst)

        except Exception as exc:  # noqa
            print(f"Error resizing SVG: src={src}, dst={dst}: {exc}")


if __name__ == "__main__":
    sys.exit(main())

#!/usr/bin/env python
import os
import sys
import svgutils
from pathlib import Path
os.chdir(Path.cwd())


def main(argv):
  src = Path(argv[0]).resolve()
  dst = Path(argv[1]).resolve()
  original = svgutils.transform.fromfile(src)
  w = float(original.width)
  h = float(original.height)
  m = max(w, h)
  x, y = 0, 0
  if w > h:
    y = (m - h) / 2
  else:
    x = (m - w) / 2
  fig = svgutils.compose.Figure(m, m, original.root)
  fig.move(x, y)
  fig.save(dst)


if __name__ == '__main__':
  sys.exit(main(sys.argv[1:]))

<?xml version='1.0' encoding='ASCII' standalone='yes'?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="28.649px" viewBox="0 0 28.649px 28.649px" height="28.649px">
  <g transform="translate(6.58, 0) scale(1) ">
    <svg width="15.489" height="28.649" viewBox="0 0 15.489 28.649">
    <defs>
        <style>
            .cls-1{fill:#d8d8d8}
        </style>
    </defs>
    <g id="facebook-logo" transform="translate(-22.077)">
        <path id="Path_67" d="M36.983.006L33.268 0C29.094 0 26.4 2.767 26.4 7.051V10.3h-3.739a.584.584 0 0 0-.584.584V15.6a.584.584 0 0 0 .584.584H26.4v11.881a.584.584 0 0 0 .584.584h4.874a.584.584 0 0 0 .584-.584V16.18h4.368a.584.584 0 0 0 .584-.584v-4.71a.585.585 0 0 0-.584-.584h-4.371V7.546c0-1.325.316-2 2.041-2h2.5a.584.584 0 0 0 .584-.584V.59a.584.584 0 0 0-.581-.584z" class="cls-1" data-name="Path 67"/>
    </g>
</svg>
  </g>
</svg>

<svg width="..." height="...">
    <g transform="...">
        тут включаем исходный svg без изменений, как есть
    </g>
</svg>

<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
    <g transform="translate(60 60)">
        <svg width="80" height="80" overflow="visible">
            <circle id="circle1" cx="40" cy="40" r="30" fill="green"/>
        </svg>
    </g>
</svg>

<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
    <circle id="circle1" cx="40" cy="40" r="30" fill="green" transform="matrix(1 0 0 1 60 60)"/>
</svg>

<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
    <defs>
        <clipPath id="clipPath1">
            <path d="M 0 0 L 80 0 L 80 80 L 0 80 Z"/>
        </clipPath>
    </defs>
    <g clip-path="url(#clipPath1)" transform="matrix(1 0 0 1 60 60)">
        <circle id="circle1" cx="40" cy="40" r="30" fill="green"/>
    </g>
</svg>