App Speed Report · Updated February 2026

Does Fera Reviews Slow Down Your Shopify Store?

Speed impact analysis of Fera Reviews (Product Reviews) — how much it affects your page load time, what scripts it loads, and how to mitigate the performance cost.

Fera Reviews Speed Impact Summary

Speed Impact Level Low Impact

Scripts Loaded

100KB

Total Script Size

120-230ms

Avg. Load Time Impact

App Name

Fera Reviews

How Fera Reviews Affects Your Store Speed

Fera Reviews provides product reviews with photo/video support and social proof widgets. It's lighter than Yotpo while offering similar review functionality.

When a visitor lands on your store, Fera Reviews loads 2 JavaScript files totaling approximately 100KB. These scripts need to be downloaded, parsed, and executed by the browser — all of which takes time and competes with your core page content for network bandwidth and CPU resources.

The measured impact is 120-230ms of additional page load time. To put that in perspective: Google research shows that each additional 100ms of load time reduces conversion rates by up to 7%. If Fera Reviews adds 120-230ms to your page load, that's a measurable impact on your bottom line.

Fera Reviews has a relatively low speed impact compared to other Shopify apps. If you're looking to improve speed, focus on higher-impact apps first before optimizing Fera Reviews.

What These Scripts Do

Fera Reviews's scripts handle its core product reviews functionality on your storefront. This typically includes:

• Core functionality script — The main JavaScript bundle that powers Fera Reviews's features on your pages
• Tracking/analytics script — Monitors user interactions and behavior for Fera Reviews's dashboard and reporting

The problem isn't that these scripts exist — it's that they often load synchronously and on every page, even pages where Fera Reviews's functionality isn't needed. A visitor browsing your blog doesn't need Fera Reviews's full product reviews scripts loading and executing.

How to Reduce Fera Reviews's Speed Impact

You don't have to choose between Fera Reviews's functionality and a fast store. Here's how to minimize its performance impact while keeping the features you need:

Fera is one of the lighter review apps — a good choice if speed is a priority

Load the full review widget only on product pages — use lightweight star snippets on collection pages

Disable Fera's social proof popup notifications if they're not driving conversions

Limit displayed review photos to 3-5 per review to reduce image loading

Use Fera's server-side star ratings for collection pages instead of client-rendered widgets

🔍 SEO impact: Reducing Fera Reviews's speed impact helps your store pass Core Web Vitals — Google's official ranking signal since 2021. Better speed = higher rankings = more organic traffic.

The Bigger Picture: App Bloat on Shopify

Fera Reviews is just one app on your store. The average Shopify store has 15-25 apps installed, and each one adds its own JavaScript and CSS to your storefront. The cumulative effect is what really kills your speed score.

Think about it: if Fera Reviews adds 120-230ms and you have 10+ other apps each adding 100-400ms, your total third-party script overhead could be 2-5 seconds. That's the difference between a store that converts and one that loses visitors before the page even loads.

Manually optimizing each app's loading behavior is time-consuming and requires technical knowledge. You'd need to edit theme files, understand JavaScript loading patterns, and constantly monitor for regressions when apps update their scripts.

This is exactly the problem Thunder was built to solve. Thunder automatically scans every app on your store, measures each one's actual speed impact (including Fera Reviews), and optimizes how they all load — deferring non-essential scripts, reducing blocking time, and ensuring your critical page content loads first.

⚡ See How Fera Reviews Affects Your Store

Thunder scans your installed apps — including Fera Reviews — and shows you exactly how much each one impacts your speed. Then it fixes them automatically.

Install Thunder Free →

Free plan available · Scans all your apps · No code changes required

Frequently Asked Questions

Does Fera Reviews slow down Shopify stores?

Fera Reviews has a low speed impact on Shopify stores, typically adding 120-230ms to page load time. It loads 2 scripts totaling approximately 100KB. While this isn't negligible, you can mitigate the impact by deferring its scripts, limiting which pages it loads on, and using a speed optimization app like Thunder to manage its loading behavior.

How much does Fera Reviews affect my PageSpeed score?

Fera Reviews typically reduces your PageSpeed Insights mobile score by 3-5 points depending on your store's baseline performance and other installed apps. The 100KB of JavaScript it loads contributes to longer Time to Interactive (TTI) and potentially affects Largest Contentful Paint (LCP) if scripts block rendering. The actual impact varies — stores with fewer apps will notice it more.

Should I uninstall Fera Reviews to improve speed?

Not necessarily. Fera Reviews provides valuable functionality (product reviews) that likely benefits your store. Instead of uninstalling, optimize how it loads: defer non-critical scripts, limit it to pages where it's needed, and use Thunder to automatically manage its loading priority. Only uninstall if you're not actively using the app or if the speed cost outweighs the business value.

Can I use Fera Reviews and still have a fast Shopify store?

Yes. Many high-performing Shopify stores use Fera Reviews successfully. The key is optimization: don't load Fera Reviews's scripts on pages where they're not needed, compress your images to offset the script overhead, and use a tool like Thunder to defer Fera Reviews's JavaScript until after your critical content has loaded. A well-optimized store with Fera Reviews can still score 80+ on PageSpeed mobile.