App Speed Report · Updated March 2026
Does SMSBump Slow Down Your Shopify Store?
Speed impact analysis of SMSBump (SMS Marketing) — how much it affects your page load time, what scripts it loads, and how to mitigate the performance cost.
See How SMSBump Affects YOUR Store
Enter your store URL and get a detailed speed report in seconds
Free · No signup required · Results in 30 seconds
SMSBump Speed Impact Summary
2
Scripts Loaded
80KB
Total Script Size
100-200ms
Avg. Load Time Impact
App Name
SMSBump
Category
SMS Marketing
Impact Level
Low
How SMSBump Affects Your Store Speed
SMSBump (now Yotpo SMS) provides SMS marketing and popup subscription forms. Its storefront impact is limited to the opt-in popup widget.
When a visitor lands on your store, SMSBump loads 2 JavaScript files totaling approximately 80KB. 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 100-200ms 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 SMSBump adds 100-200ms to your page load, that's a measurable impact on your bottom line.
SMSBump 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 SMSBump.
What These Scripts Do
SMSBump's scripts handle its core sms marketing functionality on your storefront. This typically includes:
- • Core functionality script — The main JavaScript bundle that powers SMSBump's features on your pages
- • Tracking/analytics script — Monitors user interactions and behavior for SMSBump'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 SMSBump's functionality isn't needed. A visitor browsing your blog doesn't need SMSBump's full sms marketing scripts loading and executing.
How to Reduce SMSBump's Speed Impact
You don't have to choose between SMSBump's functionality and a fast store. Here's how to minimize its performance impact while keeping the features you need:
SMSBump's impact is relatively low — prioritize other apps for optimization
Disable the popup form on pages where SMS opt-in doesn't make sense (FAQ, shipping policy)
Use time-delayed popup triggers to improve perceived performance
If you use Yotpo Reviews, consolidate with Yotpo SMS to potentially reduce total script overhead
Remove the SMS widget from mobile if mobile opt-in rates are negligible
🔍 SEO impact: Reducing SMSBump's speed impact helps your store pass Core Web Vitals — Google's official ranking signal since 2021. Better speed = higher rankings = more organic traffic.
Quick Optimization Checklist for SMSBump
Complete these steps to minimize SMSBump's speed impact
The Bigger Picture: App Bloat on Shopify
SMSBump 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 SMSBump adds 100-200ms 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 SMSBump), and optimizes how they all load — deferring non-essential scripts, reducing blocking time, and ensuring your critical page content loads first.
⚡ See How SMSBump Affects Your Store
Thunder scans your installed apps — including SMSBump — 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
What Merchants Say
★★★★★
"Our PageSpeed score went from 34 to 82 without removing a single app. Thunder handled everything automatically."
James M.
Fashion & Apparel
★★★★★
"We were about to uninstall half our apps to fix speed. Thunder saved us the hassle — all apps running, score above 80."
Sarah K.
Health & Beauty
★★★★★
"Setup took 30 seconds. Our LCP dropped from 4.2s to 1.8s. Best $20/month we spend."
David R.
Home & Garden
Frequently Asked Questions
Does SMSBump slow down Shopify stores?
SMSBump has a low speed impact on Shopify stores, typically adding 100-200ms to page load time. It loads 2 scripts totaling approximately 80KB. 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 SMSBump affect my PageSpeed score?
SMSBump typically reduces your PageSpeed Insights mobile score by 3-5 points depending on your store's baseline performance and other installed apps. The 80KB 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 SMSBump to improve speed?
Not necessarily. SMSBump provides valuable functionality (sms marketing) 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 SMSBump and still have a fast Shopify store?
Yes. Many high-performing Shopify stores use SMSBump successfully. The key is optimization: don't load SMSBump'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 SMSBump's JavaScript until after your critical content has loaded. A well-optimized store with SMSBump can still score 80+ on PageSpeed mobile.
Other SMS Marketing App Speed Reports
More App Speed Reports
high impact · 200-400ms
Does Judge.me Slow Shopify? →low impact · 100-200ms
Does Loox Slow Shopify? →medium impact · 180-350ms
Does PageFly Slow Shopify? →high impact · 300-600ms
Does Yotpo Slow Shopify? →high impact · 250-450ms
Does Stamped Slow Shopify? →medium impact · 150-280ms