website speed

Shopify Discussion

Topic summary

A store owner experienced a sudden drop in website speed scores (from 60 to 46 on desktop, 49 to 42 on mobile) despite making no recent changes after previously optimizing banners and removing unused apps.

Identified Issues:

  • Domain redirecting to HTTP instead of HTTPS, negatively impacting performance
  • Banner image set to lazy load instead of eager load, delaying rendering
  • Slow-loading JavaScript files that need minification
  • Leftover third-party app code requiring cleanup

Actions Taken:

  • Changed banner loading attribute from lazy to eager
  • Plans to hire technical support for HTTPS redirect, JS minification, and code cleanup

Additional Clarifications:

  • Hidden banners that don’t display on the store won’t affect loading speed
  • The owner suspects Shopify’s new Winter Edition release may have contributed to the performance drop

The discussion remains open as the store owner awaits technical implementation of the recommended fixes.

Summarized with AI on November 3. AI used: claude-sonnet-4-5-20250929.
1

Hi everyone,

A few weeks ago I optimized all the banners, removed unused apps etc. to improve the performance/speed of my store. My website speed has been 60 for desktop and 49 for mobile for the last few weeks. Today though the speed/performance dropped to 46 on desktop and 42 on mobile. I have not done anything on my store in the last few weeks. Absolutely nothing!

Any help as to how I can figure out why this happened? Or any insight on my store and improving the speed?

Thank you for your time

www.choosh.com

2

HI @shireenm

Here is a few reasons that I have found out:

  • Domain Redirecting to HTTP: Your domain is currently redirecting to an HTTP link (without “https”), which negatively impacts the speed test results. You may want to address this to improve performance.

  • Lazy Loading on Banner Image: The banner image is set to lazy load, which delays its rendering and affects site speed. Consider changing the loading attribute from lazy to eager for faster rendering.

  • Slow Loading JS Files: Several JavaScript files are loading slowly. If you’ve already removed unused ones, you could try using an SEO app to minify the remaining files for better optimization.

  • Third-party App Code: There’s still a significant amount of leftover third-party app code on the site. I recommend reviewing and cleaning up any unnecessary code.

I hope this helps

Best,

Daisy

1 Like
3

Hey Daisy

Thanks so much for your input.

  1. For the domain redirecting to https: how do i do that? I couldn’t see anything when i went to settings → domain. Please let me know.

  2. Done

3 and 4. I’ll need to have a someone do that for me as I’m not familiar with coding.

I am wondering if the performance of my website got affected by the new shopify winter edition that got released today.

I have a last question for you… If i have banners on my website that are hidden because they’re not being used at the moment.. does that slow down the loading time? Am I better off removing the banners instead of hiding them?

Thanks a lot for your help

Best,

Shireen

4

Hi @shireenm

Changing the url from http to https will require changing within the code too :heart: You should ask the tech support to help you with this along with issue 3 and 4

Yes, if you hide it and it doesn’t show on your store, it will not affect the speed

Best,

Daisy

1 Like
5

Thanks Daisy! Will do. :slightly_smiling_face:

6

Hi @shireenm

Please let us know if our reply is helpful by giving it a Like or marking it as a Solution!

1 Like