Free Tool
Free Shopify Store Analyzer
Get a complete performance analysis of your Shopify store. Find speed bottlenecks, identify problematic apps, measure Core Web Vitals, and get Shopify-specific recommendations to boost conversions.
Analyze Your Store Now →Free · No signup · Results in ~30 seconds · Powered by Google PageSpeed Insights
What Our Shopify Analyzer Checks
Core Web Vitals
Measures LCP, FCP, CLS, and TBT — the same metrics Google uses for search rankings. See exactly where your store falls on Google's good/needs-work/poor thresholds.
Render-Blocking Resources
Identifies JavaScript and CSS files blocking your page from rendering. Most come from Shopify apps — we show you which ones and how much time they cost.
Third-Party Scripts
Analyzes the impact of third-party app scripts (Klaviyo, Judge.me, chat widgets, etc.). See how much main thread time each domain consumes.
Image Optimization
Checks for oversized images, missing lazy loading, incorrect formats, and images without width/height attributes that cause layout shifts.
SEO Impact Assessment
Evaluates how your speed metrics affect Google rankings. Shows whether you're passing Core Web Vitals thresholds and estimates the impact on organic traffic.
Conversion Impact
Estimates how your load time affects conversions based on Google/Deloitte research. See the potential revenue you're losing to slow page speed.
How the Shopify Store Analysis Works
Enter your store URL
Just paste your Shopify store URL (e.g., mystore.com or mystore.myshopify.com). No signup or login needed.
We run a comprehensive analysis
Our tool uses Google's PageSpeed Insights API to perform a full mobile performance audit. This takes about 30 seconds and simulates a real mobile user on a 4G connection.
Get Shopify-specific results
You'll see your performance score, Core Web Vitals, all issues found (ranked by impact), and which ones can be automatically fixed. Results are tailored for Shopify — not generic web advice.
Take action
Fix issues manually using our speed optimization guide, or install Thunder to automatically handle the highest-impact optimizations. Plans start at $19.99/mo — most stores see a 27+ point improvement within minutes.
Want to Fix Issues Automatically?
Thunder Page Speed Optimizer automatically fixes the most common and impactful performance issues found by our analyzer — render-blocking resources, unused JavaScript, CSS delivery, and font optimization. Average improvement: +27 PageSpeed points.
Install Thunder Free →Free plan available · No credit card required · 30-second install
Frequently Asked Questions
What does the Shopify store analyzer check?
Our analyzer runs a comprehensive performance audit on your Shopify store using Google's PageSpeed Insights API. It checks Core Web Vitals (LCP, FCP, CLS, TBT), identifies render-blocking resources, finds problematic third-party scripts from apps, measures unused JavaScript and CSS, and provides specific recommendations ranked by impact.
Is this Shopify analyzer free?
Yes, completely free with no signup, no email required. We use Google's public PageSpeed Insights API. You can analyze any Shopify store as many times as you want.
How is this different from Google PageSpeed Insights?
We use the same Google API, but our analyzer is specifically designed for Shopify stores. We identify which issues are caused by Shopify apps vs your theme, flag which problems can be automatically fixed by Thunder, and provide Shopify-specific recommendations instead of generic web performance advice.
Can I analyze a competitor's Shopify store?
Yes! Enter any Shopify store URL to analyze it. This is a great way to benchmark your performance against competitors. You can see their speed score, Core Web Vitals, and the types of issues they have.
What should I do after analyzing my store?
Focus on the issues with the highest estimated time savings first — typically 'Eliminate render-blocking resources' and 'Reduce unused JavaScript.' The fastest fix is installing Thunder Page Speed Optimizer, which automatically handles the most impactful optimizations. For remaining issues, follow the specific recommendations in your report.