Lazy Load – Exclude Words & Threshold

Hi,

Could you please give me advice on the following:

1. Lazy Loading Exclude Words

According to

The Ideal W3 Total Cache Settings 2023: Revamped With New Features/Setup Guide

Exclude Words: add all above the fold images here to exclude them from lazy load. This can improve LCP since lazy loading your above the fold images would be counterintuitive.

In Performance > User experience > Lazy Loading > Exclude Words

I have the following in the field (not sure if this was from default or my colleague’s settings):

avia-bg-style-fixed
data-bgposition=
data-envira-src=
data-large_image=
data-lazy-original=
data-lazy-src=
data-lazyload=
data-lazysrc=
data-no-lazy=
data-src=
data-srcset=
fullurl=
lazy-slider-img=
loading=”eager”
no-lazy
rev-slidebg
skip-lazy
soliloquy-image
swatch-img
w3-total-cache
woocommerce/assets/images/placeholder.png
wpcf7_captcha

Are these all accurate or do I need to delete and/or add any? Do I also need to manually enter the url of each image above the fold for each page of the website?

2. Lazy Loading Threshold

According to

The Ideal W3 Total Cache Settings 2023: Revamped With New Features/Setup Guide

Threshold: can result in a smoother scrolling experience by loading images before they get into the viewport using a threshold (i.e. 100px, 10%). This prevents lazy loaded images from “jumping” onto the page especially if you scroll down fast (bad for user experience).

Which value would you recommend?

Thanks
Mel