JavaPro: JavaScript Performance Manager for PrestaShop

Instantly speed up your PrestaShop—deliver content “above the fold” in record time.
JavaPro is built to solve the #1 issue in eCommerce performance: slow above-the-fold rendering caused by render-blocking JavaScript. With JavaPro, your key content appears faster, making a powerful first impression and keeping visitors engaged.

Why JavaPro? Above-the-Fold Content Loads First

• Significantly improves above-the-fold render: Your visitors see your site’s most important content immediately, with less waiting and fewer abandoned visits.
• Maximize Core Web Vitals: Google measures your site’s speed by how quickly above-the-fold content appears—JavaPro gives you the advantage.
• No coding required: Instantly removes render-blocking JavaScript, so your content loads before scripts slow things down.
• Safe A/B Testing: See changes only on your IP, and roll out improvements with confidence.

Quick Start Installation

1. Upload JavaPro using Module Manager and install.
2. Default settings:
   • A/B testing is enabled for your IP—see the performance boost before it goes live.
   • Automatic preload: JavaPro adds a <link rel="preload"> header for scripts with attribute “none,” so your content isn’t blocked.

Optimize Above-the-Fold Experience in Minutes

1. Visit your shop from your A/B testing IP.
2. Browse important pages (homepage, category, product, checkout).
3. Open JavaPro → Dashboard and click Refresh to review all JavaScript files.
4. Assign attributes (async, defer, none) and positions (top, bottom) for fine-grained control of load order and rendering speed.

Best Practice: Visitor-First Configuration

• Recommended Position: Bottom (for maximum above-the-fold content speed)
• Recommended Attribute: None (JavaPro will auto-preload for you)

With these settings, your site’s content appears first, scripts load later—the way users and Google prefer.

Advanced Options for Power Users

• Choose Load Position: Top (for early script loading) or Bottom (for visitor-first rendering)
• Attributes:
  • async: Loads scripts in parallel, executes as soon as possible
  • defer: Loads scripts in parallel, executes after parsing
  • none: Standard blocking (JavaPro auto-preloads so your content isn’t blocked)
• Bulk update all scripts for a fast, global optimization.

Dashboard & Settings

• Full control: Instantly adjust how and when each script loads.
• A/B Testing: Experiment risk-free.
• Email Alerts: Get notified when new scripts are detected.
• Default Configs: Your settings applied automatically to new scripts.

Compatibility

• Fully compatible with all PrestaShop themes and modules
• MultiShop ready

Transform your PrestaShop into a fast, visitor-friendly shop.
Deliver the content that matters most, as soon as the page loads.
If you need setup help, our expert team provides free installation and configuration—we test so you don’t have to.