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We checked the Luigi’s Box javascript size and its effect on the load time of 11 websites using various Luigi’s Box products. Here are the results from Google Lighthouse:
- Product: (size (kb) – load time (ms))
- Luigi’s Box Recommender: (46.36 – 49.45)
- Luigi’s Box Product Listing: (14.00 – 457.33)
- Luigi’s Box Search: (60.67 – 65.00)
- Luigi’s Box Autocomplete: (31.71 – 47.67)
It is clear that even frontend integration has a minor effect on page load time. For comparison, the average size of the Google Tag Manager script for the same websites was 239kb, and the page load time was 345 ms. The Facebook script took 145 kb and 140 ms on average.
We also compared the rankings from Google Lighthouse in the recent A/B tests for clients using search and recommender on mobile devices. We compared:
- Core Web Vitals Metrics
- Visual stability – Cumulative Layout Shift (lower is better)
- Page load speed – First Contentful Paint, Largest Contentful Paint (in microseconds)
- Total Blocking Time (in microseconds)
- Overall Score (0-100)
- SEO Score (0-100)
Search:
- Site Search – Mobile: (Luigi’s Box vs. Original)
- Cumulative Layout Shift: (0.88 vs. 1.72)
- First Contentful Paint: (4.27 vs. 4.27)
- Largest Contentful Paint: (12.23 vs. 12.97)
- Total Blocking Time: (930.00 vs. 700.00)
- Overall Score: (15.67 vs. 16.67)
- SEO score: (54.00 vs. 54.00)
Recommender:
- Recommender – Mobile: (Luigi’s Box vs. Original)
- Cumulative Layout Shift: (0.00 vs. 0.00)
- First Contentful Paint: (3.50 vs. 3.57)
- Largest Contentful Paint: (7.73 vs. 7.17)
- Total Blocking Time: (1,236.67 vs. 1,006.67)
- Overall Score: (41.67 vs. 45.00)
- SEO score: (92.00 vs. 92.00)