pip install PythonPSI

psi <SITE_URL> <OPTION1> <OPTION2> ...

$ psi developers.google.com --category seo --stratergy desktop --locale en

    {
    "captchaResult": "CAPTCHA_NOT_NEEDED",
    "kind": "pagespeedonline#result",
    "id": "https://developers.google.com/",
    "loadingExperience": {
        ...
    },
    "originLoadingExperience": {
        ...
    },
    "lighthouseResult": {
        ...
    },
    "analysisUTCTimestamp": {
        ...
    }

$ psi --help

    Usage: psi [OPTIONS] URL

    Options:
    --api_key TEXT        Required to use the API in an automated way and make
                            multiple requests per second

    --category TEXT       A Lighthouse category to run; if none are given, only
                            Performance category will be run

    --metrics TEXT        Returns metrics of a particular field in response
                            object

    --locale TEXT         The locale used to localize formatted results
    --stratergy TEXT      The analysis stratergy (desktop or mobile) to use, and
                            desktop is the default

    --threshold TEXT      Threshold score to pass the PageSpeed test. Useful for
                            setting a performance budget.

    --links TEXT          If passed adds links with more info about
                            opportunities. Useful for checking documentation about
                            opportunities.

    --utm_campaign TEXT   Campaign name for analytics.
    --utm_source TEXT     Campaign source for analytics.
    --captcha_token TEXT  The captcha token passed when filling out a captcha.
    --help                Show this message and exit.