Remove Unused JavaScript Code

How to optimize reviva.shop.myshopify.com

Shopify SiteScore: 56/100Analyzed March 2026Re-analyze this site

Remove Unused JavaScript Code

Medium Impact+12 points estimated

Why It Matters

138 KiB of unused JavaScript blocks rendering and increases Total Blocking Time by 300ms.

How to Fix

Remove or lazy-load the Shopify preview bar scripts on production. Split the Swiper.js bundle to only load needed modules. Audit and remove unused features from theme JavaScript files, particularly in critical.js and WPM tracking scripts.

0Needs Improvement

What This Score Means

A score of 56 falls in the "Needs Improvement" range (50-89). While it is better than poor (0-49), you should aim for 90+ to provide an optimal user experience and maximize SEO benefits.

This site is slower than approximately 35% of similar sites. The main issues affecting performance are image optimization, JavaScript execution time, and layout stability.

Addressing these issues could improve your conversion rate by 15-20% and boost your search engine rankings.

Core Web Vitals Analysis

LCP

Largest Contentful Paint

11.9s
Poor

Good: < 2.5s

Measures how long it takes for the main content to appear on screen

INP

Interaction to Next Paint

332ms
Needs Improvement

Good: < 200ms

Measures how quickly the page responds to user interactions

CLS

Cumulative Layout Shift

0.00
Good

Good: < 0.1

Measures visual stability - how much content shifts during page load

AI Performance Analysis

This Shopify store has poor performance with a score of 56/100, indicating significant user experience issues. The biggest problem is excessive page redirects that are wasting over 1 second of load time, combined with oversized images that are nearly 2MB larger than necessary for their display size. The site takes nearly 12 seconds for the largest content to appear and 15 seconds to become fully interactive, which will likely frustrate customers and hurt conversions. Fixing the redirect chain, properly sizing images, and reducing the 138KB of unused JavaScript could improve the performance score by 30+ points and dramatically speed up the shopping experience.

Other Optimization Recommendations

Eliminate Page Redirects Chain

High Impact+18 points estimated

Why It Matters:

Multiple redirects delay LCP by 1,050ms and add unnecessary server round trips.

How to Fix:

Update Shopify theme to directly link to the final URL without query parameters. Remove the preview theme redirect chain by accessing the live site directly. Configure proper canonical URLs in your Shopify admin settings.

Optimize Image Delivery Sizes

High Impact+15 points estimated

Why It Matters:

Oversized images waste 1,919 KiB and delay LCP, especially the hero image being served at 3336x2400.

How to Fix:

Use Shopify's responsive image system with srcset attributes. Implement proper image sizing with Shopify's URL parameters (&width=800 for mobile, &width=1200 for desktop). Add CSS object-fit: cover to maintain aspect ratios while reducing file sizes.

Keep Your Site Fast After Optimization

Once your site is optimized, maintain that speed. Use DeployHQ for zero-downtime, automated deployments—so performance fixes and updates go live safely every time, without breaking your site.

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