Adobe Experience Manager speed statistics: 434 websites measured
By Christian Schreiber · Updated
Adobe Experience Manager is the CMS of many large enterprises, often combined with Adobe Analytics, Target and a tag manager. The platform itself is rarely the slowest part. Personalization, testing and tracking layered on top of it usually are.
By Core Web Vitals pass rate, Adobe Experience Manager ranks last of six platforms with their own page, behind Contentful. Clearest advantage over all measured websites: Time to First Byte (median), 645 ms against 693 ms. Largest gap: Pass all three Core Web Vitals, 34% against 48%.
Core Web Vitals on Adobe Experience Manager
34% of the 434 measured Adobe Experience Manager websites pass all three Core Web Vitals with real-user data. Across all measured websites the figure is 48%.
| Metric | Good | Median | Middle half | Threshold |
|---|---|---|---|---|
| LCP | 55% | 2336 ms | 1765 ms – 3227 ms | 2500 ms |
| INP | 66% | 154 ms | 108 ms – 250 ms | 200 ms |
| CLS | 64% | 0.07 | 0.01 – 0.16 | 0.10 |
Median mobile Lighthouse score: 39. Why lab score and field data diverge is explained in the Website Speed Statistics.
Who runs Adobe Experience Manager in this sample
Adobe Experience Manager sites in this sample belong mostly to large enterprises: banks, insurers, manufacturers, telecom providers and consumer brands. They are typically multilingual, maintained by several teams and connected to Adobe Analytics, Target or other marketing tools, which shapes the numbers more than the CMS itself.
How to read your own Adobe Experience Manager values
Compare your values with the median of this sample rather than with all websites, since enterprise sites carry tooling that smaller sites never load. LCP is the most telling metric here, because testing and personalization layers act before the main content appears. If several country sites run on the same instance, test more than one: they often differ in tags and content even with the same templates.
Adobe Experience Manager by region
Field data of Adobe Experience Manager websites per region.
| Region | Websites | Pass all three | LCP p50 | INP p50 | CLS p50 |
|---|---|---|---|---|---|
| Worldwide | 434 | 34% | 2336 ms | 154 ms | 0.07 |
| DACH | 56 | 55% | 1666 ms | 124 ms | 0.05 |
From 30 websites per region.
More metrics: TTFB, FCP, TBT and Speed Index
Thresholds and sources: Website Speed Statistics.
| Metric | Source | Good | Adobe Experience Manager median | All websites median | Threshold |
|---|---|---|---|---|---|
| Time to First Byte | Field data | 68% | 645 ms | 693 ms | 800 ms |
| First Contentful Paint | Field data | 52% | 1780 ms | 1545 ms | 1800 ms |
| Total Blocking Time | Lab | 18% | 764 ms | 680 ms | 200 ms |
| Speed Index | Lab | 1% | 9756 ms | 8657 ms | 3400 ms |
Page weight and third-party code
A Adobe Experience Manager home page transfers 4.6 MB at the median, of which 1.8 MB is JavaScript. 99% load third-party code, from a median of five providers.
| Provider | Share | Main thread (median) |
|---|---|---|
| Google Tag Manager | 59% | 493 ms |
| Adobe Tag Manager | 50% | 155 ms |
| Meta (Facebook) | 32% | 266 ms |
| OneTrust (Optanon) | 31% | 117 ms |
| Google CDN | 14% | 339 ms |
| TikTok | 10% | 188 ms |
Most common lab findings
| Finding | Share | Saving (median) |
|---|---|---|
| Render-blocking resources | 97% | 7854 ms |
| Unused JavaScript | 96% | 2360 ms |
| Unused CSS | 86% | 600 ms |
| Images not properly sized | 80% | 1549 ms |
| Images not in next-gen formats | 56% | 2205 ms |
Typical Adobe Experience Manager performance bottlenecks
A/B testing and personalization scripts that hide the page until they have run delay the LCP directly. Several tag managers and analytics libraries on the same page add main-thread work and hurt INP. Auditing which tags still serve a purpose tends to bring more than changes to the CMS.
Related guides: Largest Contentful Paint (LCP) · Interaction to Next Paint (INP) · Eliminate render-blocking resources
Adobe Experience Manager by industry in this sample
- Finance and insurance: 28%
- Automotive and mobility: 10%
- Travel and hospitality: 9%
- Telecommunications: 8%
Other platforms
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