tc39.es

Site speed audit for tc39.es based on real-user data from Chrome UX Report.

Mode:

Device:

Metrics

TTFB

Time to First Byte

0.5s

Good < 0.8

85.2%

Impr.

11.7%

Poor > 1.8

3.1%

FCP

First Contentful Paint

1.6s

Good < 1.8

78.1%

Impr.

9.9%

Poor > 3.0

12.0%

LCP

Largest Contentful Paint

1.4s

Good < 2.5

90.2%

Impr.

5.2%

Poor > 4.0

4.6%

INP

Interaction to Next Paint

332ms

Good < 200

62.4%

Impr.

19.0%

Poor > 500

18.6%

CLS

Cumulative Layout Shift

0.00

Good < 0.10

89.0%

Impr.

2.9%

Poor > 0.25

8.0%

Audience

Form Factors

Mobile

53.5%

Desktop

46.6%

Round-Trip Time

189ms

Low < 75

21.2%

Medium

70.6%

High > 275

8.2%

Navigation Types

LCP subparts

LCP Resource Types

Text

100.0%

The site speed dashboard.

Track, analyze, and optimize Core Web Vitals for any domain. Get instant access to real-user Chrome UX Report data with zero configuration.