Tl;dr - Most Shopify stores aren’t slow because they lack optimization, they’re slow because of too many apps. Worse, some “speed optimization” tools fake higher PageSpeed scores without improving real performance. Audit your app stack, remove what doesn’t drive revenue, and focus on actual user experience, not vanity metrics.
Shhh... we want you to be in on a secret that very few Shopify merchants know. Those Shopify speed optimization apps that you use are mostly a scam or do the opposite of boosting your store’s speed.
Surprised?
Of course, you are not (the big reveal was in the title).
But if you’ve ever stressed about your Shopify store's speed and installed those apps, you’ll find this article made just for you.
On paper, we all know how they are supposed to work.
You head to the Shopify App Store, search ' Shopify speed optimization,' pick something with decent reviews and a convincing before/after screenshot, and install it.
Three minutes later, your score jumps from 34 to 88.
You feel like a genius. You tell your business partner. You screenshot it. You move on.
Except... your customers are still waiting the same 4.7 seconds for your homepage to load or bouncing away to your competitor’s site like this seller’s customers.
“No matter how fast the internet connection is, my site is slow, and I'm getting complaints from returning customers and new ones. Bounce rates are through the roof at like 63% and the metrics tool I'm using is flagging lots of speed issues.”
What happened is that the score changed but the experience didn’t.
This is the scandal sitting inside a lot of Shopify stores right now, and it's far more widespread than most merchants realize. In fact, Shopify's own performance team found that nearly 1 in 6 apps that promised one-click speed optimizations were outright cheating the metrics.
And if they aren’t cheating, they are often slowing down your site.
One Redditor was so appalled by the idea that they decided to boycott them all:
“Any app that claims to improve your site speed with a single click is likely to use hacks to trick speed tools into providing a higher score without actually improving performance for users. There’s lots of these apps nowadays, it’s best just to avoid them all.”
So, should you do the same? Is there a way to find out whether your app is a scam or not? What’s the long-term fix? We’re addressing all of these questions along with a few more.
The word 'scam' might be too light for what's happening.
These apps are looking for Google's Lighthouse tool, GTmetrix, or PageSpeed Insights to run a test. The moment it detects one, it strips your page down to almost nothing, no heavy scripts, no images, no third-party code. The testing tool sees a lean, fast page. It spits out a great score. You're thrilled. Then a real human visits your store and gets the full slow experience, exactly what they were getting before you paid for the app.
Shopify's team called this out explicitly and took action against apps doing it. They also found and shut down stores being used to host the malicious code. But here's the catch: some of this is happening through completely external channels, freelancers, agencies, Fiverr sellers - where the App Store review process has no reach.
Even if we set aside the outright cheaters for a moment and talk about legitimate speed apps, we can find that several of them are counterproductive in practice.
How so?
Well, the average Shopify store runs 15 apps. Each one, every single one, adds JavaScript to your store. It makes API calls. It loads stylesheets. It adds weight. And critically, this happens on every page load, regardless of whether the app is doing anything useful on that page.
Store owners have been raising these concerns for years on Reddit:
“Ever noticed that every time you add a new Shopify app, your site speed tanked? I feel like brands get stuck in this trap where they install 8–10 apps hoping for growth, but then performance drops and conversions suffer.”
The cruel irony is that many 'speed booster' apps work the same way. They install their own JavaScript layer, add their own tracking, and run their own processes - all in the name of making things faster.
Even the numbers back this up: third-party scripts alone (including analytics, pixels, chat widgets, review carousels) often account for 30 to 40% of total page load time on a typical Shopify store. If your 'speed app' is adding to that pile rather than reducing it, you're paying for the problem to get worse.
Enough about the problem. Here's what genuinely moves the needle and it starts with understanding what's actually making your store slow.
Before touching a single setting, you need to know what you're actually dealing with. Use these tools together:
This is where most stores have the most to gain, and it doesn't require a developer to get started.
A practical rule of thumb: if you have more than 10-15 apps installed, you almost certainly have redundancy.
Once your app stack is leaner, focus on what genuinely helps real users:
Even store owners who mean well tend to repeat the same errors when trying to fix speed. Here are the most costly ones:
Well, we have news for you.
Those Fiverr/Upwork gigs that you see when you go down the rabbit hole for more than 20 minutes can run a scam too.
Sure, they promise to take your Shopify store to a 90+ PageSpeed score for $30. Yes, they deliver what they promise in 24 hours. And some of these listings have hundreds of five-star reviews.
Yet, you must approach with serious caution.
Here’s what actually happens when you hire one of these sellers (as told by one Redditor):
“These sellers make hundreds per week selling the same copied scripts. Store owners are desperate for faster sites, and scammers exploit that. Please be cautious. If a deal looks too good to be true, it probably is.”
The deal is mostly the same as the app: the seller injects a small script into your theme code. That script is designed to detect when a speed testing tool is running the test. It checks for specific identifiers the device that PageSpeed Insights emulates (a Moto G Power), the Lighthouse string in Chrome's user agent, or GTmetrix's own identifier. When it spots one of those signals, it temporarily blocks your apps, images, and scripts from loading serving the testing tool a nearly blank page that scores brilliantly.
The real user who visits your store five minutes later gets the full, unchanged experience.
There's an added risk that some sellers go further. The same post talks about cases where sellers inserted hidden spam links, unauthorized tracking scripts, and even hidden product collections tied to unrelated keywords, all buried in your theme code while you're celebrating your new speed score.
If you've ever hired a cheap speed optimization service or installed a one-click speed app, Shopify's performance team recommends the following check:
To be fair: not every developer on Fiverr is running a scam. There are legitimate Shopify developers offering real optimization work at fair prices. The tell is in what they promise and how they report results.
A legitimate developer will talk about image compression, app auditing, deferred scripts, lazy loading, and CDN configuration. They'll show you before/after comparisons using your Real User Measurement dashboard or just a screenshot of a PageSpeed score. They'll explain what they changed and why. And they won't promise a specific score in 24 hours.
Anything that sounds like 'guaranteed 90+ score by tomorrow' for under $100 is almost certainly about the score, not the speed.
The speed optimization space on Shopify has a genuine problem: it's very easy to make a number look good without making anything better. The tools that measure performance can be fooled. The merchants trying to improve their stores often can't tell the difference. And the sellers who figured this out are making real money exploiting that gap.
But the underlying stakes are real. 70% of consumers say a slow-loading website makes them less likely to buy. Stores loading in under two seconds convert at 2.5 times the rate of stores that take five seconds. A one-second delay can cost a mid-sized store thousands per day in lost revenue.
None of that changes based on what your PageSpeed score says. It changes based on what your customers actually experience when they land on your store.
