Monitoring and Ongoing Optimization

Ask Me Anything Q&A Performance101

Topic summary

The discussion centers on identifying effective benchmarks for measuring web performance in the online diamond jewelry market.

Core Recommendations:

  • Target Core Web Vitals: LCP < 2.5s, FID < 100ms, CLS < 0.1
  • Maintain page load times under 2-3 seconds, especially on mobile
  • Monitor conversion rates alongside speed metrics

Measurement Tools & Data Sources:

  • Chrome User Experience Report (CrUX) provides real-user data for competitive benchmarking
  • Free tools like Treo, PageSpeed Insights, and GTmetrix enable performance comparison
  • CrUX data has some limitations but offers valuable industry context

Advanced Tracking for Luxury E-commerce:

  • Segment performance by device, browser, and region (Safari issues noted as common)
  • Monitor revenue correlation with speed—faster experiences often yield 2x higher spending
  • Track checkout-specific errors including JavaScript bugs and third-party script delays

Key Principle:
The most important benchmark is comparing performance before and after optimizations, rather than solely focusing on competitor comparisons. For high-value products like diamond jewelry, trust and speed directly impact conversion rates.

Summarized with AI on October 28. AI used: claude-sonnet-4-5-20250929.
1

What benchmarks should we use to measure the success of our web performance against competitors in the online diamond jewelry market?

1 Like
2

For the online diamond jewelry market, I’d recommend tracking Core Web Vitals, page load time, and conversion rate benchmarks. Since trust and speed are everything in this space, aim for sub-2.5s load, <100ms FID, and <0.1 CLS. Also compare your performance on mobile vs desktop using tools like PageSpeed Insights or GTmetrix.

3

Thanks for your question!

When working on ongoing performance optimizations, the most crucial benchmark is to compare your store’s performance after implementing new optimizations vs. its performance before them. That said, there’s a public dataset available for use: the Chrome User Experience report (or CrUX for short)-CrUX allows you to benchmark your web performance against competitors, with some limitations. It gathers data from real Chrome users and aggregates it for public consultation through various tools.

But you can also access this data using free third-party tools such as Treo. By entering a domain, Treo will show you how that domain is performing across several metrics, including the three Core Web Vitals that Google uses as part of their ranking signals.

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I hope this information is helpful to build your own web performance benchmark.

4

We track a few key metrics for premium ecom brands (like diamond jewelry) that directly tie to trust and conversions:

  • Core Web Vitals: LCP < 2.5s, FID < 100ms, CLS < 0.1. Every millisecond matters in luxury.

  • Mobile Speed: Real-user load under 3s—mobile shoppers bounce fast when it’s slow.

  • Conversion by Segment: Always break down by device, browser, and region. Safari bugs are common.

  • Revenue vs Speed: Faster users often spend 2x more. Use this to guide what to fix.

  • Checkout Errors: Watch for JS bugs, broken flows, or slow third-party scripts that block purchase.

These give you a tight loop between performance and revenue—especially critical in high-AOV markets.