Should image_compare scale to given width/height?

[yairchu]

Describe the bug

In the following:

_n = 100
mo.image_compare(np.random.random([_n, _n]), np.random.random([_n, _n, 3]), width=300, height=300)

A small image comparison widget is created with blank padding next to it to fill the given width and height. Is that intended behavior or should it scale to fill the given space?

Will you submit a PR?

• Yes

Environment

{
"marimo": "0.23.16",
"editable": false,
"location": "/Users/yairchu/dev/undersampled_add_sub/.venv/lib/python3.13/site-packages/marimo",
"OS": "Darwin",
"OS Version": "25.5.0",
"Processor": "arm",
"Python Version": "3.13.2",
"Locale": "en_US",
"Binaries": {
"Browser": "140.0.7339.134",
"Node": "v23.11.0",
"uv": "0.11.16 (135a36367 2026-05-21 aarch64-apple-darwin)"
},
"Dependencies": {
"click": "8.4.2",
"docutils": "0.23",
"itsdangerous": "2.2.0",
"jedi": "0.19.2",
"markdown": "3.10.3",
"narwhals": "2.24.0",
"packaging": "26.2",
"psutil": "7.2.2",
"pygments": "2.20.0",
"pymdown-extensions": "11.0.1",
"pyyaml": "6.0.3",
"starlette": "1.3.1",
"tomlkit": "0.15.1",
"typing-extensions": "4.16.0",
"uvicorn": "0.52.1",
"websockets": "17.0.1"
},
"Optional Dependencies": {
"anywidget": "0.11.0",
"loro": "1.13.2",
"mcp": "1.29.0",
"openai": "2.52.0",
"pandas": "3.0.5",
"python-lsp-ruff": "2.3.1",
"python-lsp-server": "1.15.0",
"ruff": "0.16.1",
"ty": "0.0.65"
},
"Experimental Flags": {}
}

Code to reproduce

_n = 100
mo.image_compare(np.random.random([_n, _n]), np.random.random([_n, _n, 3]), width=300, height=300)

[mscolnick]

I guess this is just with numpy arrays. This seems reasonable, if you'd like to make a PR, thank you!