Ensure Site Loads Under 3 Seconds on Mobile

Task Library

Get the website loading in under 3 seconds on a mobile device, because slow plumbing wastes every ad dollar and ranking the site earns.

Category: Digital Plumbing

Use this when the site feels slow on a phone, PageSpeed Insights mobile scores are poor, or before sending any Dollar a Day traffic to the site.

Inputs

  • Admin access to WordPress (plugins, theme, media) and hosting/CDN
  • Baseline measurement: PageSpeed Insights mobile run for the homepage and the top landing page
  • List of the highest-traffic pages (from GA4 if installed)

Steps

  1. Baseline first (MAA: Metrics before Action): run PageSpeed Insights on mobile for the homepage and top landing pages. Save scores and load times – this is your before evidence.
  2. Fix images, the usual offender: compress, serve modern formats, size to display dimensions, lazy-load below-the-fold images. Hero images shot on a phone are often uploaded at full resolution – scale them.
  3. Cut render-blocking weight: remove unused plugins and scripts, defer non-critical JavaScript, drop heavy page-builder modules that load site-wide.
  4. Enable caching at the host and a CDN if available; verify caching is actually serving (check response headers).
  5. Re-test on PageSpeed Insights and on a real phone over cellular – the lived experience is the test that matters.
  6. Repeat steps 2-4 until mobile load is under 3 seconds, then record before/after numbers in the client record (Analysis → Action complete).

Definition of done (QA checklist)

  • Homepage and top landing page load in under 3 seconds on mobile (PageSpeed Insights + real-device check)
  • No unused plugins or render-blocking scripts left from the audit
  • Caching/CDN confirmed serving
  • Before/after measurements recorded in the client record
  • Linked back to the definitive article and relevant siblings
  • Complies with Blog Posting Guidelines (if it publishes content)

Example(s)

  • Example needed – run the Meta-Article Prompt after first real run.

File in the zip: skills/digital-plumbing/ensure-site-loads-under-3-seconds-on-mobile.md. Download the Task Library zip.

Index: Task Library. Article guidelines.

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