Introducing the Web Performance Index: Closing eCommerce’s Benchmarking Gap

The industry has never had continuously updated, commerce-specific benchmarks — until now. See how your site stacks up and connect performance directly to revenue. 

Every eCommerce leader knows speed matters. But how do you know if your site is fast enough, or at least faster than your peers? Until now, there hasn’t been a clear answer. 

For years, brands have struggled without a trusted, continuously updated benchmark to put their own performance into context. Reports were static, tools were too generic, and the industry lacked a living resource that showed how real-world speed and third-party choices shape shopper outcomes. The Web Performance Index changes that — giving the entire market access to insights that were previously missing. 

The Problem with Traditional Benchmarks

Most benchmarks have a common flaw: they’re either too broad or too outdated to be actionable. 

  • Static reports capture performance at only a single point in time. 
  • They don’t segment results by industry, platform, or device. 
  • They rarely address the elephant in the room: third-party apps that can either accelerate or cripple shopper experience. 

And while there are plenty of tools that measure page-level performance, none provide the commerce-specific, filterable, always-fresh insights that eCommerce leaders actually need. Without that context, retailers have been left guessing: Are we truly competitive? How does performance impact conversions or bounce rates? What role do Core Web Vitals play in shopper outcomes?  

Introducing the New Web Performance Index

The Web Performance Index is Yottaa’s answer to a problem every digital leader faces: the lack of meaningful context around site performance. Unlike static benchmark reports, the new Index is interactive and continuously updated, giving teams near real-time context they can act on. 

Here’s what you’ll find inside: 

  • Real-world data that reflects your shoppers, powered by 500M+ anonymized sessions across 700+ retail brands. 
  • Benchmarks that fit your reality. Filter results by platform, industry, and device to see what’s typical in your segment. 
  • Clarity on third-party tech. The Index highlights which apps accelerate the shopper journey and which ones slow it down, giving teams visibility no other benchmark provides. 
  • Core Web Vitals visibility. Track key Google metrics (LCP, INP, CLS) as part of the Index to connect site performance directly to shopper experience. 
  • Always-on access. The continuously updated insights are available for free, with no login or installation required. 

Unmatched Third-Party Visibility

Third-party apps are the backbone of today’s digital storefronts, powering everything from reviews and personalization to checkout and analytics. But without clear visibility, retailers often face tough trade-offs: which tools truly add value, and which introduce friction? 

The Web Performance Index makes those decisions easier. By surfacing the relative performance impact of different app categories, it helps brands: 

  • Prioritize vendor spend by identifying which tools and categories create hidden drag. 
  • Strengthen business cases by connecting third-party choices directly to revenue outcomes. 
  • Plan smarter launches by flagging which technologies may need extra optimization ahead of peak traffic events. 

Broad industry findings show that while some categories — like personalization and user-generated content — are critical for engagement, they’re also among the most performance-sensitive. With PIR data, teams can move beyond gut feel and make third-party decisions with confidence. 

Why It Matters

Site performance isn’t just a technical metric — it’s a direct driver of business results. Faster pages lift conversion rates, while stronger Core Web Vitals improve SEO rankings and reduce ad costs. On the flip side, slow or malfunctioning third-party apps increase bounce rates and abandoned carts, draining revenue. 

The Web Performance Index reframes performance as a shared business priority by connecting speed and shopper experience to results that matter across the organization. Executives gain visibility into how performance impacts revenue. Marketers can justify campaign spend with conversion data. Developers can pinpoint which apps or scripts are dragging the site down. 

Because the Index is continuously updated, it becomes a reliable touchpoint for every stage of digital decision-making, whether you’re planning for a seasonal traffic surge, responding to a Core Web Vitals update, or evaluating a new vendor. It turns performance from an afterthought into a growth lever. 

Key Use Cases

The Web Performance Index is built to be useful in the moments that matter most for digital teams. 

  • Strategic planning: Set realistic KPIs by comparing your site’s performance to peers in your industry or on the same platform. 
  • Vendor and platform evaluation: Use real data to evaluate which technologies support the shopper experience and which may be slowing you down. 
  • Campaign and seasonal readiness: Check performance benchmarks before big launches or traffic surges to confirm your site can handle the pressure. 
  • Ongoing monitoring: Stay on top of Core Web Vitals changes, third-party updates, and industry shifts all year long with continuously refreshed data. 
  • Making the business case: Bring credible, market-wide benchmarks to executives to secure buy-in and investment for performance initiatives. 

Prepare for the Next Generation of Web Performance

By democratizing access to this level of insight, Yottaa is helping brands elevate site performance from a backend concern to a boardroom priority. The Web Performance Index provides the context digital leaders need to make smarter, faster decisions, all supported by live data and grounded in real shopper behavior. 

Your shoppers expect fast, seamless experiences. This is how you deliver them. 

Explore the Web Performance Index today and see how your site stacks up. 

Introducing the Web Performance Index: Closing eCommerce’s Benchmarking Gap

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