Blog Detail

Claude performance report · https://infinitalab.com/blog/material-interfaces-thermal-transmission-guide/

● Needs urgent work
Source: Claude · PageSpeed Insights
Tested: 3 Aug 2026 · daily
Devices: mobile & desktop
By: Baivab, Growth

Perf · Mobile

/ 100 · poor

Perf · Desktop

/ 100 · good

Mobile LCP

21.3s

target < 2.5s

Mobile TBT

847ms

target < 200ms

Page weight

3.1 MB

mobile

The headline

On mobile this template scores 42 against 93 on desktop. Mobile is held back by main-thread blocking (TBT 847ms) from 1.8 MB of JavaScript. Mobile LCP is effectively broken at 21.3s.

Scores & Core Web Vitals

Metric	Mobile	Desktop	Target
Performance	42	93	90+
Accessibility	86	90	90+
Best Practices	73	96	90+
SEO	92	92	90+
Largest Contentful Paint	21.3s	0.9s	< 2.5s
Cumulative Layout Shift	0.03	0.01	< 0.1
Total Blocking Time	847ms	0ms	< 200ms
First Contentful Paint	3.0s	0.8s	< 1.8s
Speed Index	8.0s	2.3s	< 3.4s
Time to First Byte	700ms	89ms	< 0.8s

Page composition

Metric	Mobile	Desktop
Total page weight	3.1 MB	1.9 MB
Images	0.4 MB	1.6 MB
JavaScript	1.8 MB	0.0 MB
Third-party bytes	—	—
Requests (total)	153	35
Script requests	48	4
Image requests	40	14
DOM elements	—	—
CPU time	3.9s	0.6s

Prioritised recommendations (click to expand)

P1Cut the mobile JavaScript bundle›

Mobile TBT is 847ms from 1.8 MB of JavaScript. Defer and code-split non-critical JS, remove unused libraries, audit third-party scripts.

P1Fix broken LCP›

LCP is 21.3s on mobile. Investigate render-blocking resources, slow hero images and failed requests.

Source: Claude via Google PageSpeed Insights, 3 Aug 2026. Mobile: Slow 4G, Moto G Power. Lab results are single-run and vary run to run.