Weekly PageSpeed Alerts with Apify, Google Sheets & Slack

Get weekly PageSpeed alerts that actually tell you what to fix

This n8n workflow runs every Monday, audits your pages with Google PageSpeed Insights via Apify, logs results to Google Sheets, and posts to Slack only when a page drops below your threshold or fails Core Web Vitals. Perfect for spotting performance regressions early.

What this workflow does

• Schedules a weekly audit using the n8n Schedule Trigger (default Monday 7am; configurable).
• Uses a Set node to store your URL list and the minimum performance score threshold.
• Runs the Apify “Bulk PageSpeed Insights & Core Web Vitals Checker” Actor to fetch PageSpeed and Core Web Vitals results (cost cap: $1 per run), waiting for completion.
• A Code node flattens the output into clean Google Sheets rows, including performance/SEO score, lab LCP and CLS, CrUX LCP and INP, Core Web Vitals pass/fail status, and the biggest Lighthouse-recommended fix. It also flags pages needing attention.
• Appends one row per page to a Google Sheets tab named PageSpeed log.
• A second Code node generates one Slack message only when something is slow—otherwise Slack stays quiet.

Use cases

• Monitor your site’s performance after releases and catch Core Web Vitals declines.
• Track a landing page cohort weekly and prioritize the biggest Lighthouse fix.
• Keep a historical performance record in Google Sheets while sending targeted alerts in Slack.

Technical details

• Nodes / stack: set, code, google sheets, slack, sticky note, apifyn8n-nodes-apify (Apify integration).
• Integrations: Apify (requires free account + API token), Google Sheets (tab: PageSpeed log), Slack (optional—can be removed if you only want sheet logging).
• Optional: add a free Google PageSpeed Insights API key to the Apify Actor input.