The State of Web Vitals

Third-party categories

Those third parties grouped by what they do.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · Phone field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Third-party categories

Those third parties grouped by what they do.

27
Categories
In the distribution
20.6%
Fleet share
Top: cdn
100.0%
Sites with any
Of cdn

12.6% of sites carry analytics. 4.5% embed video players.

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
2

The third-party categories mix who uses what, and how fast each group loads

VariantShare of sitesMedian
Cdn
21%
Framework
18%
Analytics
13%
Tag managers
6%
Font services
6%
Cms
5%
Marketing pixels
5%
Video
4%
Consent
4%
Bot detection
3%
Ecommerce
3%
Image cdn
2%
Maps
2%
Ab testing
1%
Rum
1%
Ad networks
1%
Performance
1%
Personalization
1%
Session recording
1%
Email marketing
1%
Reviews
0%
Chat
0%
Cdp
0%
Scheduling
0%
Search
0%
Push notifications
0%
Forms
0%

Third-party categories. On the fleet: 20.6% cdn, 18.1% framework, 12.6% analytics. 100.0% of sites use at least one cdn.

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3

Passing LCP per bucket every category and count level at once - color is the pass rate

1
2
3
4
5
Cdn 20.6%
82
81
82
81
79
Framework 18.1%
85
79
74
69
Analytics 12.6%
83
79
79
Font services 5.9%
78
78
Marketing pixels 4.7%
79
77
77
Video 4.5%
78
70
Consent 3.5%
74
77
Ecommerce 2.7%
70
90
Image cdn 1.8%
80
83
Maps 1.7%
74
75
Rum 1.2%
80
78
Ad networks 1.2%
78
80
Session recording 1%
78
73
Reviews 0.5%
85
87
← few of this category on the pagemany →
60%95%+ of sites passing LCP Faded cells: under 100 sites

Each row is a category, each column its own count bucket (few on the left, many on the right); the cell is the share of those sites passing LCP.

Ecommerce swings the hardest: 70% of sites pass LCP with few, 90% with many. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
4

Few vs many - does quantity cost LCP? the pass rate with few vs many of each category

60%70%80%90%100% few → many
Framework 18.1% 85% → 69%
Video 4.5% 78% → 70%
Cdn 20.6% 82% → 79%
Analytics 12.6% 83% → 79%
Session recording 1% 78% → 73%
Rum 1.2% 80% → 78%
Marketing pixels 4.7% 79% → 77%
Font services 5.9% 78% → 78%
Maps 1.7% 74% → 75%
Image cdn 1.8% 80% → 83%
Ad networks 1.2% 78% → 80%
Reviews 0.5% 85% → 87%
Consent 3.5% 74% → 77%
Ecommerce 2.7% 70% → 90%
% of sites passing LCP · hollow ring = pages with few, solid dot = pages with many

Per category: the pass rate among pages with FEW of it (hollow ring) against pages with MANY (solid dot), worst trend first. Thin buckets are excluded from the endpoints.

More Framework costs the most: the LCP pass rate falls from 85% with few to 69% with many. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
5

Why this matters for the Core Web Vitals, and where to start fixing it

Third parties grouped by what they do, and the category predicts the damage. Ads and chat inject visible UI, so they shift layout (CLS). Analytics and tag managers run code, so they block interactions (INP). Font and CDN services sit on the render path, so they delay paint (LCP).

Budget per category, not per tag. Most stacks need at most one of each: one analytics tool, one tag manager, one chat widget. The duplicates are where the easy wins live.

Go fix it The case for limiting analytics and tracking scripts → Chat widgets with perfect Core Web Vitals → Speed up a Calendly integration →
Related signals Optimization plugins → Analytics on page → Third parties per page → Ad networks on page → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured