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Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

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mattstromawn.com

https://mattstromawn.com/

98PERF 100A11Y 100BEST 100SEO !AXE CWV

Ranks Overall #592 Built Awesome #477

Data from Sep 22, 2026, 3:53 AM UTC old Measured once a week · 7 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Moved from https://matthewstrom.com/.

History from the previous URL is included below, with the move on Sep 7, 2026. A step-change around that point is likely the change of address rather than a regression.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

98
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-08-24 → 2026-09-20), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 2.18 s good ↓ -7 ms (-0.3%) 2.14 s – 3.05 s 1.29 s good 91.7% 5.4% 2.9%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0 0 good 96.9% 2.1% 1%
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms n/a
FCP First Contentful Paint 1.55 s good → no change 1.55 s – 2.43 s 1.27 s good 87.4% 6.1% 6.5%
Speed Index 1.55 s good → no change 1.55 s – 2.43 s n/a
TTFB Time to First Byte 631 ms good ↑ +139 ms (+28.3%) 467 ms – 637 ms 701 ms good 77.1% 18.5% 4.4%

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 99 ms
time to first byte 43 ms

LCP LAB Simulated vs LCP FIELD

Lab 2.18 s
Field p75 1.29 s

The lab LCP is 1.68× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 378 kB ↓ -162 B 377 kB – 379 kB
Requests 11 → no change 11 – 12
Third-party Weight 10.2 kB → no change 10.2 kB – 379 kB
Third-party CPU 6 ms ↑ +2 ms (+40.9%) 4 ms – 10 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
font 47.2% 178 kB 2
image 44.5% 168 kB 3
stylesheet 3.4% 12.8 kB 1
script 3.2% 12.0 kB 2
document 1.4% 5.4 kB 1
other 0.3% 1.2 kB 2
Total 378 kB 11

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Cloudflare script 10.2 kB 6 ms
Total 10.2 kB 6 ms

Page health

Metric Value Change / range Trend
Main Thread Work 561 ms ↑ +133 ms (+31.2%) 427 ms – 619 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 193 → no change 193 – 193
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 46% 255 ms
style layout 28% 157 ms
paint composite render 12% 67 ms
script evaluation 11% 64 ms
parse HTML 3% 15 ms
script parse compile 0% 2 ms
Total 561 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 264 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate page-has-heading-one — Page should contain a level-one heading 1 node

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 22, 2026, 3:53 AM UTC 98 2.18 s 0 0 ms 378 kB 3/3 ±0 2,482 0% 22.6s Wayback
Sep 15, 2026, 12:19 AM UTC 98 2.18 s 0 0 ms 378 kB 3/3 ±7 2,437 -2% 26.4s Wayback
Sep 7, 2026, 10:31 PM UTC 98 2.14 s 0 0 ms 378 kB 3/3 ±3 2,648 +7% 25.3s Wayback
Sep 7, 2026, 3:00 PM UTC old URL 91 3.05 s 0 0 ms 378 kB 3/3 ±4 2,473 0% 26.1s Wayback
Aug 31, 2026, 10:40 AM UTC old URL 92 2.91 s 0 0 ms 377 kB 3/3 ±2 2,330 -6% 21.4s Wayback
Aug 21, 2026, 4:47 PM UTC old URL 92 2.89 s 0 0 ms 379 kB 3/3 ±8 2,381 -4% 24.4s Wayback
Aug 21, 2026, 4:44 AM UTC old URL TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 18.3s

Embed this score

Use this web component to show mattstromawn.com's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site!

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://mattstromawn.com/"></speedlify2-score>