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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

1.0s
Good < 0.8
66.5%
Impr.
24.7%
Poor > 1.8
8.8%
FCP

First Contentful Paint

1.4s
Good < 1.8
84.5%
Impr.
9.7%
Poor > 3.0
5.8%
LCP

Largest Contentful Paint

1.5s
Good < 2.5
90.9%
Impr.
5.0%
Poor > 4.0
4.1%
INP

Interaction to Next Paint

95ms
Good < 200
90.7%
Impr.
7.0%
Poor > 500
2.3%
CLS

Cumulative Layout Shift

0.00
Good < 0.10
95.3%
Impr.
3.3%
Poor > 0.25
1.4%

Form Factors

Mobile
58.5%
Desktop
38.1%
Tablet
3.4%

Round-Trip Time

148ms
Low < 75
46.0%
Medium
45.4%
High > 275
8.6%

Navigation Types

LCP Resource Types

Image
58.8%
Text
41.2%

LCP Image Subparts

Time to First Byte
916ms
Resource Load Delay
105ms
Resource Load Duration
266ms
Element Render Delay
189ms

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