Why did my site speed and bounce rate suddenly increase?

Shopify Partner
1 0 0

Hi All,


I've seen a large jump in bounce rate last month and having trouble diagnosing the problem. There was a jump on May 26th but there were no changes made to the site on that day. Site speed has been very inconsistent since that day. I'm wondering if anyone has seen such a significant unattributed jump before? It feels like I'm missing something obvious.


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Thank you in advance.

Replies 2 (2)

Shopify Expert
718 76 112

Hello @bsa1013,


We have diagnosed your website to find the issue.  As per Google Page Insights, your mobile website speed is too low. This may be the reason behind the increase in bounce rate. 




We will suggest the below solutions to improve your website speed on mobile:

  1. Use Lazy load on images and replace large-size images with small-sized images.
  2. Use minified CSS and javascript file.
  3. Check if resources are blocking the First Contentful Paint (FCP) of our page, use preloaded CSS and javascript files.
  4. Remove unused app code to avoid running code for unused features, and make your theme code lighter and easier to read.
  5. Remove third-party JS scripts and Shopify Apps which are no longer in use and clear the app code as well. 
  6. Remove unused CSS and javascript.
  7. Some code can be removed or reordered to improve your online store's performance. If you are not using an app, then you can remove it.
  8.  Preload the Largest Contentful Paint(LCP) image.
  9. Used compressed images and adjust your image's explicit height and width.
  10. While removing an app make sure to remove the app code that was added as part of the app installation process.

Consider the above points to optimize your mobile website speed and it will help you decrease the bounce rate for sure.


Let us know if you need any help with Speed optimization. 


All the best,

Team CedCommerce

CedCommerce || Shopify Expert
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Shopify Partner
2405 223 537

Hello @bsa1013,


Follow the below tips that will help you decrease the load on your web pages.

1. You can run the Shopify Theme Inspector for Chrome to identify the lines of code that are slowing down pages in your online store.
2. Image compression is important and a necessity for faster loading web pages. Make sure your images are of good quality and do not add too many images on a single page. You can try some tool like https://tinyjpg.com/.
3. Removing unused app code is a best practice that avoids running code for unused features, and makes your theme code easier to read.
4. Use a theme which is optimized for performance means a theme which is responsive, fast, and takes minimal time to load the page.
If you choose a theme with numerous sliders, fancy animations, advanced navigation systems, etc., will affect your page speed. If your theme is loading slow, consider disabling the theme features you don't need.
5. Themes contain CSS, JS, HTML which can increase and affect your store speed. So disable theme features you don't use.
6. Loading extra data your customers aren't using can impact your store speed without adding value.
7. Using slideshow, which are high-quality images combined with transitions, take time to load when the user clicks the link to the homepage. So instead you can use a single high-quality hero image.
8. Use a System font which is a font that is already installed on most computers. For example: Segoe UI, Times New Roman. If you use a font that does not yet exist on your customer's computer, then the font has to be downloaded before your text can be displayed. This impacts the time that your store takes to load.
9. Replace GIFs with static images
10. To reduce the initial load time, you can use Lazyload technique
11. Remove third-party JS scripts and Shopify App which you are no longer using
You should disable app features you don't use, or you can remove the app if you don't need it. If you are removing an app make sure to remove code that was added as part of the app install process.
12. Minimize HTTP requests. For example: Combine & inline your CSS scripts
13. Avoid unnecessary redirects and fix broken links
14. Use minified CSS and JS files
15. Don't add too many images on a page
Adding too many images on a page can be frustrating. It can significantly slow the load time of your website. Also, it can overwhelm visitors, which will ultimately result in a poor user experience, a high bounce rate, and a high probability of lower rankings in relative search results.
16. You can use Google PageSpeed Insights to view more detailed metrics for pages in your store.

Google Search, the world's largest and most trusted FREE ecommerce channel will show more of your store to customers on Google Search if your site is fast. So site speed is critical for organic channel sales. Did you know, ecommerce on organic channels is greater than all paid ads and social media combined. We created flareAI to deliver feeds to organic channels on a regular basis without taking your time. flareAI helps to get your products found on Google, the world's largest FREE eCommerce service. Let flareAI help you to grow your revenue on the world's best free sales channels.

Hope the above tips will help you.

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