Performance

Know it's fast before launch day.

Run a PageSpeed audit on any preview page, mobile or desktop, without leaving ThemeSync. Every result is kept.

Opportunities

See what to fix, biggest win first.

Each audit lists what's slowing the page down, with the estimated time or size you'd save.

  • Scores for speed, accessibility, best practices and SEO
  • Core Web Vitals in plain view
  • Diagnostics for the deeper dig
ThemeSync performance results showing Core Web Vitals and three opportunities: avoid multiple page redirects, reduce unused JavaScript, and reduce unused CSS, each with estimated savings.
Real screen from the app
Built into the preview

No copying URLs into another tab.

Audits run against the preview you already have, on the pages you already mapped.

Any mapped page

Audit a product or collection template, not just the homepage.

Mobile and desktop

Each is scored on its own, the way Google does it.

5 free audits a day

Add your own Google API key for unlimited runs.

History

Every audit, kept with a screenshot.

Check the score before and after a change, and spot a slip before the client does.

  • Re-run any past audit in one click
  • Works for WooCommerce previews too

Ship themes that feel fast.

Run your first audit on a live preview today.