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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

0.8s
Good < 0.8
75.3%
Impr.
19.8%
Poor > 1.8
4.9%
FCP

First Contentful Paint

1.2s
Good < 1.8
90.5%
Impr.
6.7%
Poor > 3.0
2.8%
LCP

Largest Contentful Paint

1.3s
Good < 2.5
94.3%
Impr.
3.6%
Poor > 4.0
2.1%
INP

Interaction to Next Paint

39ms
Good < 200
98.3%
Impr.
1.2%
Poor > 500
0.5%
CLS

Cumulative Layout Shift

0.00
Good < 0.10
96.7%
Impr.
2.6%
Poor > 0.25
0.7%

Form Factors

Mobile
58.5%
Desktop
38.1%
Tablet
3.4%

Round-Trip Time

95ms
Low < 75
63.5%
Medium
31.5%
High > 275
5.0%

Navigation Types

LCP Resource Types

Image
70.0%
Text
30.0%

LCP Image Subparts

Time to First Byte
769ms
Resource Load Delay
128ms
Resource Load Duration
213ms
Element Render Delay
165ms

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