Remove Unused JavaScript Code

How to optimize zifornd.com

Generic SiteScore: 64/100Analyzed February 2026

Remove Unused JavaScript Code

Medium Impact+12 points estimated

Why It Matters

Google Tag Manager scripts contain 139KB of unused code, slowing LCP by 600ms and wasting processing time.

How to Fix

Audit Google Tag Manager containers (GTM-TZ239QN and GTM-MB2LXBPM) to remove unused tags and triggers. Consolidate duplicate GTM containers if possible. Use Partytown to run analytics scripts in web workers to avoid blocking main thread execution.

0Needs Improvement

What This Score Means

A score of 64 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

6.8s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

120ms
Good

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 website has poor performance with a score of 64/100, primarily due to slow loading of critical resources. The biggest problem is render-blocking JavaScript files that are delaying the First Contentful Paint by 750ms, while also suffering from extremely large video files (over 70MB total) that lack proper caching. The site is experiencing forced reflows that hurt user experience, and there's significant unused JavaScript and CSS that could be removed to improve loading times. Implementing proper caching for video content, deferring non-critical JavaScript, and removing unused code could dramatically improve both the performance score and user experience.

Other Optimization Recommendations

Defer Render-Blocking JavaScript

High Impact+18 points estimated

Why It Matters:

JavaScript files are blocking initial page render, delaying FCP by 750ms and preventing users from seeing content.

How to Fix:

Add async or defer attributes to non-critical JavaScript files, especially jQuery and Elementor scripts. Move jQuery to load after initial render using wp_enqueue_script with 'defer' parameter. Configure NitroPack to defer JavaScript execution until after FCP.

Optimize Video File Caching

High Impact+15 points estimated

Why It Matters:

17MB of video content has zero cache lifetime, forcing full re-downloads on every visit and wasting 69MB of bandwidth.

How to Fix:

Set proper cache headers for video files (home-banner-animation.webm and manufacturing videos) with max-age of 31536000 (1 year). Configure CDN caching rules in NitroPack or CloudFlare for .webm files. Consider compressing videos further or using different formats for mobile devices.

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Keep Your Site Fast After Optimization

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