DPI metadata of PNG export should change with scale or be adjustable

I export a figure as a png using write_image:

  fig.update_layout(width=300).write_image("test_1.png", scale=1)

Opening this image in another program, the width of the image is 3.125 inches corresponding to a DPI of 96.

If I instead export an image with a different scale, e.g. 2
fig.write_image("test_2.png", scale=2)
I get a png file with a scaled pixel width (e.g. 600).
But opening the image in another program, the width in inches is also doubled to 6.25.

The ideal behavior IMO would be that the width of the image in inches is unaffected by the scale parameter or having a dpi keyword argument that sets the DPI metadata directly.
A workaround (which others might find useful) is to use Pillow to fix the DPI metadata

  from PIL import Image
  scale = 2
  Image.open("test_2.png").save("test_2_fixed.png", dpi=(96 * scale, 96 * scale))

such that the image defaults to the same size in inches in other programs independent of the scale.

Python の write_image エクスポートパスから始め、scale=1 と scale=2 で生成される PNG メタデータを比較します。別の画像プログラムで結果の物理的な寸法を確認します。ピクセルのスケーリングによって物理的なサイズが変わらなくなるか、dpi オプションによって要求されたメタデータの制御が可能になれば完了です。