Check your Shopify store's page speed, Core Web Vitals, and key performance metrics. Find the issues slowing your pages down and understand where your store can improve.
Understand What’s Slowing Your Store Down
Run a performance check with SEOLAB to review your page speed score, Core Web Vitals, and common speed issues. Identify slow-loading resources and get clearer direction on what to optimize.
Page speed affects how quickly shoppers can browse, interact, and move toward a purchase. Use your speed results to understand where performance can improve and focus on the issues that matter most.
Check how quickly your Shopify storefront loads and get a clear view of overall page performance.
Review Core Web Vitals
See important metrics like LCP, INP, and CLS to understand how your store performs for real visitors.
Find Speed Bottlenecks
Identify slow-loading resources, heavy elements, and performance issues that can delay your storefront.
Improve Mobile Performance
Review how your store performs on mobile devices and find areas that need attention for faster browsing.
Create Faster Shopping Journeys
Reduce delays across product, collection, and other important pages so shoppers can move through your store smoothly.
Track Improvements
Run another speed check after making changes to see how your performance metrics have improved over time.
PAGE SPEED INSIGHTS
See exactly what is slowing your Shopify store down
Understand the performance issues that affect your store and get clear, actionable recommendations to make every page faster.
Find the Performance Issues Hiding Across Your Store
A slow Shopify store is rarely caused by one thing. Check the areas that commonly affect speed and understand where your biggest performance opportunities are.
Slow Product Pages
Large product images, videos, and app scripts can make important product pages load slowly and interrupt the shopping experience.
Heavy Storefront Resources
Large files and unnecessary resources can increase page load time. Review what your storefront loads and identify where performance can improve.
Slow Collection Pages
Image-heavy collections can become slower as your catalog grows. Check how quickly shoppers can browse and interact with these pages.
Poor Core Web Vitals
Review key performance signals such as LCP, INP, and CLS to understand where loading, responsiveness, or visual stability needs attention.
Unoptimized Images
Oversized images can add unnecessary weight to your pages. Find opportunities to reduce image impact while maintaining visual quality.
Third-Party App Impact
Apps and external scripts can add extra requests and processing time. Identify performance-heavy additions that may be slowing your theme.
Shopify Store Performance
See how your Shopify storefront performs and understand the factors affecting load speed, responsiveness, and visual stability across important store pages.
Understand Your Speed Score
See your overall performance score alongside the metrics that influence it, so you know where your Shopify store stands.
Spot the Biggest Slowdowns
Review images, scripts, theme resources, and other performance factors to see what may be contributing most to slower page loads.
Go beyond a single speed score. Review the performance metrics that help explain how quickly your pages load, respond to shoppers, and remain visually stable.
Review Core Web Vitals
Check LCP, INP, and CLS to understand loading speed, interaction responsiveness, and visual stability across your storefront.
Measure Improvements Over Time
Run another performance check after making changes and compare your results to see whether your store is moving in the right direction.
See how much of a difference a faster Shopify store can make. Here's a real example of a store that improved their page speed using SEOLAB's recommendations.
Before Optimization
48
Page Speed Score
LCP4.3 s
INP200 ms
CLS0.18
Slow loading product images
Unoptimized theme files
Render-blocking apps
After Optimization
92
Page Speed Score
LCP1.2 s
INP98 ms
CLS0.02
Optimized images and modern formats
Cleaned up unused scripts
Faster theme and improved app setup
Got Questions?
Frequently Asked Questions
Everything you need to know about SEOLab Page Speed Calculator.
Is the Page Speed Calculator really free?
Yes. Calculating your store's speed score costs nothing.
What's the difference between this calculator and SEOLab's full Page Speed Audit?
This tool gives you an instant speed score and Core Web Vitals breakdown. The full Page Speed Audit adds ongoing monitoring plus real fixes like Instant Page and Lazy Load Images and Video.
What metrics does the calculator check?
It checks Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Total Blocking Time (TBT), the three Core Web Vitals metrics.
Will this tool fix my store's speed for me?
No. It calculates and shows you your current scores. To apply fixes, use SEOLab's full Page Speed Audit feature.
Can I check both mobile and desktop speed?
Yes. The calculator shows separate scores for mobile and desktop performance.
How often can I recalculate my score?
As often as you like, there's no limit on free calculations.
Do I need technical knowledge to understand the results?
No. Scores are shown in plain terms, no technical background required.
Will a better speed score guarantee higher rankings?
No. Page speed is one of many ranking factors. A better score improves user experience and supports SEO, but it doesn't guarantee higher rankings on its own.
Still have questions?
Can't find the answer you're looking for? Reach out to our customer support team.
