Why am I still getting LCP warnings after not lazy loading the first image?

Why am I still getting LCP warnings after not lazy loading the first image?

diananh
Shopify Partner
42 0 8

Hi,

 

I am getting the LCP warnings on Pagespeed and GT Metrix both which suggest me to not lazy load the first image on my page. Now I have used the condition to not lazy load the first image through script. In the source also I can see "loading = eager", but still these tools are giving same error. I am facing this issue on both the collection and the home page. 

I have attached the screenshots for reference. 

Any suggestions on why this is giving error?

 

Slideshow-banner code below:

 

{%- if block.type == 'image' -%}
{%- if block.settings.image != blank -%}
{%- capture loading_strategy -%}{% if forloop.first %}eager{% else %}lazy{% endif %}{%- endcapture -%}
{%- capture fetch_priority -%}{% if forloop.first %}high{% else %}low{% endif %}{%- endcapture -%}

<picture>
{%- if block.settings.mobile_image != blank -%}
<source
media="(max-width: 699px)"
srcset="{{ block.settings.mobile_image | image_url: width: '400x' }} 400w, {{ block.settings.mobile_image | image_url: width: '600x' }} 600w, {{ block.settings.mobile_image | image_url: width: '800x' }} 800w, {{ block.settings.mobile_image | image_url: width: '1000x' }} 1000w"
width="{{ block.settings.mobile_image.width }}"
height="{{ block.settings.mobile_image.height }}"
>
{%- endif -%}

{{- block.settings.image | image_url: width: block.settings.image.width | image_tag: loading: loading_strategy, fetchpriority: fetch_priority, sizes: '100vw', widths: '300,400,500,600,700,800,900,1000,1200,1400,1600,1800,2000,2200,2400,2600,2800,3000,3200' -}}
</picture>

 

Collection banner code below:

 

<picture>
{%- if section.settings.enable_parallax -%}
{%- assign is_attribute = 'image-parallax' -%}
{%- endif -%}

{%- if section.settings.mobile_image != blank -%}
<source
media="(max-width: 699px)"
srcset="{{ section.settings.mobile_image | image_url: width: '400x' }} 400w, {{ section.settings.mobile_image | image_url: width: '600x' }} 600w, {{ section.settings.mobile_image | image_url: width: '800x' }} 800w, {{ section.settings.mobile_image | image_url: width: '1000x' }} 1000w"
width="{{ section.settings.mobile_image.width }}"
height="{{ section.settings.mobile_image.height }}"
>
{%- endif -%}

{%- assign image = section.settings.image | default: collection.image -%}
{{- image | image_url: width: image.width | image_tag: loading: 'eager', is: is_attribute, widths: '300,400,500,600,700,800,900,1000,1200,1400,1600,1800,2000,2200,2400,2600,2800,3000,3200' -}}
</picture>

Replies 7 (7)

oscprofessional
Shopify Partner
16405 2444 3195

Hello @diananh ,

Please share your store URL to check the exact issue that's affecting the LCP

Hire us | Pass Core Web Vital | B2B Wholesale Experts | Claim Your Free Website Review |
Connect with Us: WhatsApp | Skype: oscprofessionals-87 | Email: pallavi@oscprofessionals.com |
Custom Shopify SolutionsPrivate Apps, Theme Customization & SEO | Digital Marketing |
OSCP Apps: Discount Suite | Wholesale App | Bundle & Upsell | Shipping Discount | and more...
diananh
Shopify Partner
42 0 8

JohnE10
Shopify Partner
119 14 21

Hi,

 

The reason the speed report is mentioning the LCP as being lazy loaded might be because of the logo image:

https://incensesticks.com/cdn/shop/files/new-logo-incense.png?v=1707458605&width=512

It's still being lazy-loaded. The other images above the fold are good.

 

Also, I think your site is scoring pretty well on Google's PageSpeed Insights, 97 on desktop which is virtually perfect, and 77 on mobile which is not  bad at all for mobile.

If my reply was helpful, Like and Accept. Or Buy Me a Beverage
App Development/Custom Modifications, Visit My Gig and let me how I can help
For help with your store speed optimization, Check Out My Other Gig
Feel free to email with any questions: ProjectCoder10@gmail.com

oreoorbitz
Shopify Partner
261 31 134

Very interesting. The only thing I can think of in your situation is that this is some weird bug with how pagespeed insights and shopify interact, and thats messing with the what shopify is outputing. Which seems very unlikely.

have you tried using an <img> tag directly, instead of the shopify image_tag filter?

Available for pagespeed consulting
https://www.upwork.com/freelancers/~01a19b6cd90193f4f6?viewMode=1&s=1017484851352698949
diananh
Shopify Partner
42 0 8

I am using the Shopify Prestige theme wherein I just upload the image on the collection page. 

Are you suggesting to edit the code in collection template and change the img_filter to normal img tag?

Milu
Shopify Partner
3 0 0

Found any fix for this LCP issue with image? I'm using Prestige theme as well.  I have a slideshow of images in the landing page with 2 images having LCP of 16.6 s. I have compressed the images, changed the format into webp. But nothing works

DaisyVo
Shopify Partner
4469 501 598

Hi Diananh,

 

We have just checked the speed of the store, it scored 69 on mobile and 89 on desktop. Here is the detailed link: https://pagespeed.web.dev/analysis/https-incensesticks-com/8xnqkrz5es?form_factor=mobile. We have a few recommendations as follows:
  • LCP: The LCP score is at 11s, which is quite high on mobile. You should optimize the store's images. A good score would range between 5-7s.
We recommend using this Avada SEO Image Optimizer app so that the store can improve its speed and provide a better user experience.
 
Best Regards, 
Daisy
Please let us know if our reply is helpful by giving it a Like or marking it as a Solution!

Avada SEO & Image Optimizer - The #1 SEO solution