Shopify Performance Tool

Scan Shopify Themes for Speed Killers Before Launch

Upload your theme ZIP and get a detailed report on unused CSS, oversized images, blocking scripts, and exactly how to fix each issue.

Start Scanning — $15/mo

Cancel anytime. Instant access after payment.

✓Unused CSS detection
✓Oversized image analysis
✓Blocking script identification
✓Render-blocking resource audit
✓Liquid template performance scan
✓Actionable fix recommendations

Pro Plan

$15

per month

  • ✓ Unlimited theme scans
  • ✓ Full performance reports
  • ✓ Fix recommendations
  • ✓ Priority support
  • ✓ New checks as added
Get Started

Frequently Asked Questions

What file types can I upload?

You can upload your Shopify theme as a ZIP file containing .liquid, .css, .js, and asset files. The scanner analyzes all supported file types automatically.

How accurate is the performance scoring?

Our static analysis engine checks against Shopify performance best practices and common bottlenecks. Scores correlate strongly with real-world Core Web Vitals improvements.

Do I need a Shopify store to use this?

No. You just need your theme files. Export your theme from the Shopify admin, upload the ZIP, and get your report instantly.