CLI to export to static html page is very slow compare to from notebook browser page.

[KnightArthurRen]

Describe the bug

Hey guys so I'm trying to export a static html page from a relatively small (~300 lines) notebook. The notebook page servers fast and if I export to html from the browser -> export -> html it's also very fast. This manual serve and export take seconds to do. However when I try to do it in CLI via marimo export html notebook.py -o static_notebook.html it's extremely slow, it usually takes over >30 mins and sometime it just completely stuck for hours I have to kill it and restart, any idea why is this the case?

Thanks!

Environment

{
  "marimo": "0.12.10",
  "OS": "Darwin",
  "OS Version": "24.4.0",
  "Processor": "arm",
  "Python Version": "3.12.8",
  "Binaries": {
    "Browser": "135.0.7049.96",
    "Node": "v22.4.1"
  },
  "Dependencies": {
    "click": "8.1.8",
    "docutils": "0.21.2",
    "itsdangerous": "2.2.0",
    "jedi": "0.19.2",
    "markdown": "3.8",
    "narwhals": "1.35.0",
    "packaging": "24.2",
    "psutil": "7.0.0",
    "pygments": "2.19.1",
    "pymdown-extensions": "10.14.3",
    "pyyaml": "6.0.2",
    "starlette": "0.46.2",
    "tomlkit": "0.13.2",
    "typing-extensions": "4.13.2",
    "uvicorn": "0.34.1",
    "websockets": "15.0.1"
  },
  "Optional Dependencies": {
    "pandas": "2.2.3",
    "pyarrow": "19.0.1",
    "pycrdt": "0.11.1",
    "pytest": "7.4.3",
    "ruff": "0.11.2",
    "sqlglot": "26.14.0"
  },
  "Experimental Flags": {}
}

Code to reproduce

No response

[akshayka]

That sounds like a bug. For us to help — can you share a notebook that we can use to reproduce this issue?

[akshayka]

When you export from the command-line, it runs the notebook to completion. But I assume your notebook doesn't take 30 minutes to run normally?

[KnightArthurRen]

That sounds like a bug. For us to help — can you share a notebook that we can use to reproduce this issue?

Thanks for the quick response! Let me trim down the sensitive info out

[KnightArthurRen]

When you export from the command-line, it runs the notebook to completion. But I assume your notebook doesn't take 30 minutes to run normally?

No it's up ~instantly

[akshayka]

@KnightArthurRen — do you have a repro to share? We're happy to help debug.

[KnightArthurRen]

@akshayka Unfortunately no it's not quite an internal notebook, I also noticed the notebook is heavily outdated so we are working on updating that first

[akshayka]

@KnightArthurRen is this still an issue?

[KnightArthurRen]

Hey @akshayka Sorry we never actually got to clean it up, I'll close this out and I might ping you guys later!