PSI Weekly Cron Baseline
Overview
Automates Google PageSpeed Insights v5 tracking for a configurable list of URLs. Runs on a cron schedule (launchd on macOS, systemd timers on Linux, or GitHub Actions for cloud-ready setup). Stores each run as a row in an NDJSON file for easy historical analysis. Optional regression detection compares current run to N-week average and alerts when scores drop > threshold.
Why: PSI single-shot tells you the current state. PSI over time tells you whethe
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