Why isn't my online store's score updating despite website optimizations?

Technical Q&A

Topic summary

Shopify speed score not reflecting recent optimizations (lazy loading, reduced JS, fewer render-blocking elements). Ongoing issues flagged: main-thread work and improperly sized images; a jQuery lazy-load implementation didn’t take effect.

Key guidance and context:

  • Shopify’s score is based on Google Lighthouse and doesn’t update instantly; updates may take up to ~48 hours after changes. Scores can differ across tools (web.dev measure vs PageSpeed Insights).
  • Suggested actions: reindex pages via Google Search Console to ensure changes are recognized; compress/resize large images (especially slideshow); remove/reduce unused JS/CSS; eliminate render-blocking resources; avoid excessive DOM size.
  • Tools referenced: Google Search Console, TinyPNG (bulk image optimization concern noted), PageSpeed Insights, GTmetrix. A detailed optimization guide was shared.

Open questions and next steps:

  • How to handle image optimization at scale without manual tools; whether to implement lazy loading via code or an app.
  • Score has increased on the dev store but still diverges from PageSpeed tests; reason likely tool/timing differences.

Status: No final resolution. Focus remains on image sizing and unused JS; await Shopify score refresh and consider bulk image optimization and verified lazy-load implementation.

Summarized with AI on February 2. AI used: gpt-5.
2

Hi @Krishna12

This is PageFly - Landing Page Builder. I would love to provide my recommendations for your store based on 7 years of providing solutions for about 150,000 active Shopify merchants.

The speed score on Shopify is calculated by Google Lighthouse, so I think you might need to re-index your pages to ensure Google crawls your page and recognizes the changes you’ve made.

You can go to Google search console to reindex your pages https://search.google.com/search-console/about

I can see the main issue lies on the image size as well. You can consider reduce the size of the images a bit, especial the images on the slideshow. Or run through an image optimizer tool like https://tinypng.com/ (if you haven’t done it yet)

We have a detailed guide about page speed optimization here https://pagefly.link/xQKRAfpQ , hope it also helps.

I hope the suggestions will help you solve the problem. If you think they do help, please let me know by giving it a Like. Thank you and wish you the best of luck :wink:

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