Shoppers are impatient. Every additional tenth of a second it takes a store to load can drop conversion rates by 7%. Can you imagine how much money a Shopify store owner could lose over a 2-second delay?

Slow websites provide bad user experiences. This alone causes people to turn away from stores they would otherwise shop from. But it can also negatively impact search engine rankings too. That’s another huge problem in its own right since so many Shopify store owners count on being listed high in Google Shopping ratings.

Fixing a slow website is tricky and technical. But thankfully, it’s easier to troubleshoot issues on Shopify than it is on most platforms. In this guide, we’re going to talk about what makes Shopify stores load slowly and why it matters (in the words of actual store owners).

We’ll wrap up with clear steps you can follow to troubleshoot your slow store.

Why Your Shopify Store Is Loading Slowly: 3 Common Reasons

Shopify stores can load slowly for a lot of reasons — oversized images, sluggish apps, theme issues, you name it. We’re going to talk about each of these in a little more detail so you can understand why each one of these causes loading issues.

This is not an exhaustive list. Truth is, there are a million reasons why your Shopify store could be loading slowly. You might have a server issue or some kind of obscure coding problem. But 95% of the time, something much simpler is giving you trouble.

Here are three loading time issues that come up all the time and that you are going to have some control over.

1. Your images are too big.

Big images are, by far, the most commonly cited reason why Shopify stores load slowly. Nearly every source we asked for advice on this matter told us this, independently of one another.

Jose Gomez, Partner at Summit Metals, put it best. “Websites generally load slowly because images are not optimized in size. For example, people might upload a JPG that is 3MB.”

On its own, that isn’t a problem, but clarifies, saying that “multiplied by 20 images, your cell phone will take a while to load [the web page].”

There are ways you can troubleshoot this, which we’ll get into more later. Gomez recommends converting images to WEBP format, which cuts size by about 70% without sacrificing quality too much. Meanwhile, Steve Sacona, Founder of Top 10 Lawyers, recommends using tools like Photoshop or free online converters to compress images to smaller sizes. In our experience, we’ve found either technique can work well.

2. One or more of your apps is slowing down your site.

Remember the days when iPhones only had 8 or 16 GB of storage? Take a second and rewind to the days of having to delete apps to make room for your music. Shopify works like that.

If your store has app after app that you are not using, it might be slowing the site down. Consider purging unneeded apps and reap the benefits of faster load times.

“Carefully choose the apps that you add to your store, and remove any that aren’t needed,” suggests Justin Christopher, Manager of Ecommerce and Marketing at Klatch Coffee. “In addition to removing the app, you might need to check to make sure the app automatically removes any code that it installed, because old apps can leave behind code that slows your site. Shopify store owners can run before-and-after tests using Google Lighthouse to ensure that newly-added apps aren’t slowing their store.”

3. You’re using a slow Shopify theme.

When themes don’t work properly, they can slow down your page. Themes are all made by developers, and developers make them by writing code. The way the code is written can have a huge impact on how the website itself is loaded when it runs that code.

Practically speaking, if your theme is the problem, the only option you really have is to switch themes. Granted, there are many other things you can troubleshoot first, which we’ll talk about. But if you keep having stubborn performance issues, your theme might be the problem after all.

Why Shopify Store Loading Time Matters

If you want to really understand why loading time matters so much, it helps to hear what other store owners have to say.

Gomez says that “Google/Bing Search Engine crawlers rate your site based on how fast your site runs. The reason for this is they want to give users best user experience (which means smooth loading times.”

Christopher states that “site speed is critical for usability. We know that visitors quickly abandon slow-loading websites, especially mobile users, which make up about 70% of our audience.” He then expressed the value of using Lighthouse, Core Web Vitals, and Search Console to find and fix issues.

“There is a reason loading time is important for many reasons. Ignoring this essential aspect can scare away prospective buyers, because an average online shopper is quite impatient, and every additional second of waiting increases the bounce rate and decreases the satisfaction rate,” says Ben Schreiber, Head of Ecommerce at Latico Leathers. “Even a [one-second] delay can lead to fewer conversions, according to research. SEO is also adversely affected by slow websites as search engines such as that of Google take loading speed as a factor when indexing web content. Reduced download times mean enhanced popularity and increased chances of converting visitors into regular clients.”

Sacona states that “fast loading times are essential for keeping visitors on your site and can directly impact your business’s bottom line. From a legal standpoint ᅳ seeing to it that your website performs efficiently is not just about user experience ᅳ it’s about seeing to it that your business against potential disputes & maintaining your market position.”

Taken all together, one thing is clear. Making your Shopify store fast is not just an intellectual exercise. It has a direct impact on your profitability.

How To Speed Up Your Shopify Store: 7 Steps

With all of the above in mind, we would like to provide some tips on how you can speed up your Shopify store. Try each of these steps one at a time, and in the order they are listed below. Use free tools like GTMetrix, Pingdom, and PageSpeed Insights to measure changes in performance as you go along.

Why follow these specific steps?

This is a technical point, but it’s helpful to understand, so bear with us. You are trying to optimize three different factors:

  • Largest Contentful Paint (LCP): The amount of time it takes to load the largest object on the page. Less time is better.
  • Interaction with Next Paint (INP): The amount of time it takes for a website to respond after a user interacts, such as by clicking on something. Less time is better.
  • Cumulative Layout Shift (CLS): The amount that objects appear to “jump around” as the website loads. Less shifting is better.

The tips that we’re going to share require relatively little technical expertise but should make a large impact on these three figures. Don’t get too hung up on the figures themselves, though, they are ultimately just ways to quantify how it feels to use your website. And you want it to feel good, so use your human judgment.

1. Optimize your images.

If your website is loading slow, you should check your images first. That’s because overly large image files are both the most likely reason for your website to be loading slowly and one of the easiest to fix.

There are two ways main ways to optimize images, and either will work. You can either convert them to WEBP or use a tool – paid or free – to compress the images to a smaller file size. It doesn’t matter which one you use, it only matters that the file size is relatively small.

Of the two, we personally find WEBP preferable since it’s a little less technical than compressing images and certain speed measurement tools tend to like it better than optimized PNG and JPG files.

When you compress images, look at them closely and make sure the quality is still good before you use them on your website. You want the smallest file that still looks good.

Windy Pierre, Ecommerce Growth Marketer at Ecommerce Manager Dot Com has some additional recommendations for image optimization. He says it’s best to “[avoid making] the main picture load lazily. Only make pictures that you can’t see right away [should] load lazily. For more control, it’s better to use Shopify’s automatic lazy loading or the section index.”

He also advises against using special effects for main pictures.  “While making pictures fade in might seem cool, it can make the website slower. It’s better to remove them for a faster website.”

2. Remove apps you don’t use.

Having too many apps is a sure way to slow down your Shopify store. The easiest thing you can do is start removing ones you don’t use.

Sacona is a fan of this approach, saying that a “quick fix is cutting back on unnecessary plugins and streamlining your site’s design to reduce the number of elements that need to load.” Removing extra apps is a great way to do this and requires relatively little explanation.

 

3. Eliminate pop-ups and lightboxes.

You likely want to avoid removing apps that you use on a regular basis. But if you’ve optimized your images and removed unnecessary apps, and you’re still running into load time issues, you might need to consider removing some marketing-related apps. Of those, the easiest thing to check for are slow-loading pop-ups and lightboxes.

“Don’t use big pop-ups. Pop-ups for cookie consent and signing up for newsletters can take a long time to load and be the most significant thing on the page,” says Pierre. If you use them, he advises that you “make sure the text or pictures in these pop-ups are small.”

4. Disable apps one by one.

If you are still having problems with loading time after optimizing images, removing old apps, and turning off pop-ups and lightboxes, you need to go a bit further. At this point, we recommend that you start disabling apps one by one and seeing how each removal affects performance. Odds are, you’ll find at least one app is tanking your load time and it’s only by disabling them one by one that you’ll be sure which one it is.

5. Toggle your lazy loader settings.

Lazy loaders cause images to load only when they are needed. For the most part, lazy loading helps a lot with site performance and Shopify’s Dawn theme enables it by default.

But sometimes, lazy loading has problems and you need to turn it off or on. This can get a bit technical, so here is a video that can walk you through the process of enabling and disabling lazy loading. It’s best to try both ways and see which one gets a better performance.

6. Make sure your CDN is working properly.

CDN is short for content delivery network. CDNs basically save a copy of your website’s files in various servers all over the world. When people load your website, the files come to them from servers that are located physically closer to them. That means the actual electronic information that moves in physical form through fiber optic cables doesn’t have to go as far.

This is nice, since Shopify’s development team has not figured out how to move data faster than the speed of light. Give them a couple of years, though, and we’re sure they’ll figure it out!

If you use Shopify to host your store, you are automatically using their CDN. For the most part, Shopify’s CDN is excellent and probably won’t give you any trouble. But if you can’t quite get the performance you need, here is a tutorial that will walk you through replacing the default CDN with one of your choosing.

7. Use a fast Shopify theme.

If you have followed the above steps and you are still running into issues, it’s possible that your theme is slowing down your website. We saved this tip for last because switching Shopify themes requires a lot of extra work and it’s not something you want to do lightly.

But if you do get to this point, Justin Christopher recommends that you “choose a theme for your Shopify store that makes fast loading a priority, and comes from a reputable developer. Quality themes include regular updates that include bug fixes and new features, as well as performance improvements.”

Final Thoughts

A slow Shopify store doesn’t just frustrate customers—it costs you money. Every second of delay means fewer conversions and lower sales. If your store isn’t loading fast enough, you’re essentially turning away shoppers who are ready to buy.

Speed matters. It affects user experience, search engine rankings, and ultimately, your bottom line. With so many factors influencing loading times, you can’t afford to ignore the problem. Start with the basics: optimize images, remove unused apps, and choose a theme designed for performance.

Fixing a slow store takes effort, but it’s worth it. Follow these steps, track your progress, and watch your store’s performance improve. A faster site leads to happier customers and a more profitable business.