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blog.mozilla.org

Site speed audit for blog.mozilla.org based on real-user data from Chrome UX Report.

TTFB

Time to First Byte

1.1s
Good < 0.8
60.4%
Impr.
28.1%
Poor > 1.8
11.5%
FCP

First Contentful Paint

1.6s
Good < 1.8
80.3%
Impr.
11.6%
Poor > 3.0
8.1%
LCP

Largest Contentful Paint

1.6s
Good < 2.5
88.5%
Impr.
6.0%
Poor > 4.0
5.5%
INP

Interaction to Next Paint

124ms
Good < 200
86.4%
Impr.
9.9%
Poor > 500
3.7%
CLS

Cumulative Layout Shift

0.00
Good < 0.10
94.4%
Impr.
3.8%
Poor > 0.25
1.8%

Form Factors

Mobile
58.5%
Desktop
38.1%
Tablet
3.4%

Round-Trip Time

183ms
Low < 75
33.6%
Medium
54.6%
High > 275
11.8%

Navigation Types

LCP Resource Types

Image
50.9%
Text
49.1%

LCP Image Subparts

Time to First Byte
1,059ms
Resource Load Delay
91ms
Resource Load Duration
321ms
Element Render Delay
199ms

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