Reduce JavaScript Execution Time

How to optimize signage.com

Shopify SiteScore: 35/100Analyzed March 2026Re-analyze this site

Reduce JavaScript Execution Time

High Impact+25 points estimated

Why It Matters

JavaScript execution takes 2.9 seconds, blocking the main thread and causing a Total Blocking Time of 1,010ms which severely impacts user interactions.

How to Fix

Remove unused JavaScript by auditing Google Tag Manager and HubSpot analytics scripts. In Shopify admin, go to Online Store > Themes > Actions > Edit Code and defer non-critical scripts by adding async/defer attributes. Consider removing duplicate Google Analytics tracking codes and consolidate third-party scripts.

0Poor

What This Score Means

A score of 35 falls in the "Poor" 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

19.2s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

247ms
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 site has severe performance issues with a critically low score of 35/100. The biggest problem is excessive JavaScript execution taking 2.9 seconds, primarily from Google Tag Manager and HubSpot analytics scripts, which is blocking the page from becoming interactive for nearly 24 seconds. Additionally, unoptimized images are wasting over 1MB of bandwidth, with some images being displayed at 352x352 pixels but downloaded at nearly 3000x1600 resolution. Reducing JavaScript payloads, deferring non-critical scripts, and properly sizing/compressing images could improve the score by 40+ points and dramatically reduce the painful 19-second load time users currently experience.

Other Optimization Recommendations

Optimize Image Delivery

High Impact+20 points estimated

Why It Matters:

Images waste 1,281 KiB with oversized dimensions and poor compression, directly impacting LCP of 19.2 seconds.

How to Fix:

In Shopify admin, replace oversized carousel images with properly sized versions (352x352px instead of 2879x1636px). Use Shopify's built-in image transformation by adding '&width=352&height=352' to image URLs. Install TinyIMG or Searchanise apps to automatically compress and convert images to WebP format.

Eliminate Render-Blocking Resources

Medium Impact+15 points estimated

Why It Matters:

CSS files block initial page rendering for 790ms, delaying First Contentful Paint and user-perceived loading speed.

How to Fix:

In your Shopify theme code, inline critical CSS for above-the-fold content directly in the <head> section. Use Shopify's liquid tags to defer non-critical CSS files like component-price.css and main-config.css by adding media='print' onload="this.media='all'". Remove unused CSS rules from base.css which has 93% unused code.

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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