Product Images loading in both JPG and Webp format

Technical Q&A

Topic summary

A Shopify store is experiencing a performance issue where product images load twice: first in WebP format, then again in JPG format. This occurs on both mobile and desktop versions.

Key Details:

  • Google PageSpeed Insights flagged the site for not serving next-gen image formats, despite WebP being delivered to Chrome
  • The duplicate loading significantly increases page load times
  • The issue affects all product pages, not just a single page

Current Status:

  • The original poster provided screenshots demonstrating the double-loading behavior
  • A second user confirmed experiencing the same problem on their website
  • No solution has been identified yet - the discussion remains open with unanswered questions about the root cause and fix
Summarized with AI on November 12. AI used: claude-sonnet-4-5-20250929.
1

Hi,

I was checking the google page speed insights for product page where it asks to serve images in next-gen format. It was strange as Shopify is delivering the Webp format to chrome. So I check the developers tool. All the images are loading twice, once in WebP format and then again in jpg format both in mobile and desktop. This is adding too much time to page loading. Can anyone please help me resolve this is issue?

Screenshot 2021-09-29 at 17.54.25.png
Screenshot 2021-09-29 at 17.54.25.png529×500 73.4 KB

Screenshot 2021-09-29 at 17.47.40.png
Screenshot 2021-09-29 at 17.47.40.png654×365 65.3 KB

This is the link I was checking. Same goes for any other product page.

https://www.dablew11.com/products/stylish-sofa-protector-sofa-covers-for-living-room

Regards,

2

Did you ever find a solution or learn more about this issue? I’m also experiencing this problem with my website.