ASTM

DebugBear performance report · https://infinitalab.com/astm/

● Needs urgent work
Project: DebugBear #104066
Tested: 17 Jul 2026 · daily
Devices: mobile & desktop
By: Baivab, Growth

Perf · Mobile

/ 100 · poor

Perf · Desktop

/ 100 · needs work

Mobile LCP

6.6s

target < 2.5s

Mobile TBT

2454ms

target < 200ms

Page weight

5.3 MB

mobile

The headline

On mobile this template scores 36 against 84 on desktop. Mobile is held back by main-thread blocking (TBT 2454ms) from 1.0 MB of JavaScript. Mobile LCP is slow at 6.6s. It also carries an oversized 32 MB image payload.

Scores & Core Web Vitals

Metric	Mobile	Desktop	Target
Performance	36	84	90+
Accessibility	87	86	90+
Best Practices	73	96	90+
SEO	92	92	90+
Largest Contentful Paint	6.6s	2.0s	< 2.5s
Cumulative Layout Shift	0.03	0.01	< 0.1
Total Blocking Time	2454ms	138ms	< 200ms
First Contentful Paint	4.6s	1.2s	< 1.8s
Speed Index	5.4s	1.5s	< 3.4s
Time to First Byte	2646ms	511ms	< 0.8s

Page composition

Metric	Mobile	Desktop
Total page weight	5.3 MB	32 MB
Images	4.0 MB	31 MB
JavaScript	1.0 MB	0.0 MB
Third-party bytes	1.2 MB	0.3 MB
Requests (total)	176	107
Script requests	35	4
Image requests	106	77
DOM elements	5,787	2,371
CPU time	8.3s	4.6s

Prioritised recommendations (click to expand)

P1Cut the mobile JavaScript bundle›

Mobile TBT is 2454ms from 1.0 MB of JavaScript. Defer and code-split non-critical JS, remove unused libraries, audit third-party scripts.

P2Improve mobile LCP›

Mobile LCP is 6.6s. Preload the hero image, reduce server response time and remove render-blocking CSS/JS.

P2Compress oversized images›

Desktop loads 32 MB, almost all images. Serve WebP/AVIF, size responsive images and lazy-load. Aim under 2 MB.

Source: DebugBear lab tests, project 104066, snapshot 17 Jul 2026. Mobile: Slow 4G, Moto G Power. Lab results are single-run and vary run to run.