Optimize RevSlider JavaScript Performance

How to optimize recommend.com

WordPress SiteScore: 48/100Analyzed January 2026

Optimize RevSlider JavaScript Performance

High Impact+18 points estimated

Why It Matters

RevSlider plugins consume 2.5s of JavaScript execution time and cause 200ms of Total Blocking Time, severely impacting interactivity.

How to Fix

Replace RevSlider with a lighter WordPress slider like Swiper.js or native CSS animations. If RevSlider is required, defer loading until after page load using WP Rocket's delay JavaScript execution feature. Remove unused RevSlider modules and animations to reduce payload size.

0Poor

What This Score Means

A score of 48 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

26.9s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

169ms
Good

Good: < 200ms

Measures how quickly the page responds to user interactions

CLS

Cumulative Layout Shift

0.10
Needs Improvement

Good: < 0.1

Measures visual stability - how much content shifts during page load

AI Performance Analysis

This WordPress site has poor performance with a score of just 48/100, indicating significant issues that hurt user experience. The biggest problem is excessive JavaScript execution taking 5.5 seconds of main thread work, particularly from Revolution Slider plugins and Facebook tracking scripts, which is causing a severely delayed Largest Contentful Paint of 26.9 seconds. The site would benefit most from reducing JavaScript payloads (potentially saving 315 KiB), optimizing images (saving 580 KiB), and fixing layout shifts caused by images without proper dimensions - these improvements alone could boost the performance score by 30+ points and dramatically improve loading times.

Other Optimization Recommendations

Fix Critical LCP Discovery Issue

High Impact+25 points estimated

Why It Matters:

The LCP image isn't discoverable from HTML, causing a massive 6+ second resource load delay that dominates your 26.9s LCP.

How to Fix:

The LCP element is an ad image loaded dynamically by JavaScript. Work with your ad provider (BroadStreet) to preload critical ad images or use a placeholder image in the HTML. Add fetchpriority='high' and ensure the image source is discoverable in the initial document without JavaScript execution.

Add Image Dimensions and Optimize

Medium Impact+12 points estimated

Why It Matters:

Unsized images cause 12 layout shifts with a CLS score of 0.105, while oversized images waste 580KB in unnecessary downloads.

How to Fix:

Add explicit width and height attributes to all WordPress images, especially BroadStreet ad images. Install ShortPixel to automatically compress and convert images to WebP. Use WordPress's responsive images feature to serve appropriately sized images for mobile devices.

Want to Analyze YOUR Website?

Get AI-powered performance insights with actionable fixes in 30 seconds

More WordPress Speed Tests

WordPress Performance Resources

Frequently Asked Questions

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.

Explore DeployHQ →Trusted by engineering teams shipping high-performance sites