speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time.

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

marcoslooten.com

https://marcoslooten.com/

95 83 100 100 CWV 16AXE

Data from Aug 21, 2026, 3:14 AM UTC — 15h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 15h

Stack

Detected on the same page load as the accessibility pass — the generator from <meta name="generator"> or the shape of the page, the host from response headers.

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Scores

95
Performance
no change
83
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 2.41 s 2.41 s 2.41 s
CLS Cumulative Layout Shift 0.039 0.039 0.039
TBT Total Blocking Time 79 ms 79 ms 79 ms
FCP First Contentful Paint 2.26 s 2.26 s 2.26 s
Speed Index 2.26 s 2.26 s 2.26 s
TTFB Time to First Byte 604 ms 604 ms 604 ms

What LCP is made of

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

element render delay 51 ms
time to first byte 6 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 502.8 kB 502.8 kB 502.8 kB
Requests 14 14 14
Third-party Weight 458.8 kB 458.8 kB 458.8 kB
Third-party CPU 79 ms 79 ms 79 ms
Unused JS 138.3 kB 138.3 kB 138.3 kB
Unused CSS 0 B 0 B 0 B

By resource type

script 311.4 kB · 4 req
font 147.4 kB · 2 req
image 32.0 kB · 1 req
stylesheet 5.6 kB · 2 req
document 5.1 kB · 1 req
other 1.3 kB · 2 req
third party 458.8 kB · 6 req

Third parties 3 entities

458.8 kB transferred, 79 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Tag Manager 288.5 kB · 70 ms CPU
Google Fonts 149.4 kB · 0 ms CPU
Google Analytics 20.9 kB · 10 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 591 ms 591 ms 591 ms
Long Tasks 3 3 3
DOM Elements 70 70 70
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 16 16 16
A11y Failures 3 3 3
A11y Failing Nodes 12 12 12

Main thread work

script evaluation 304 ms
other 121 ms
script parse compile 73 ms
style layout 65 ms
parse HTML 14 ms
paint composite render 14 ms

Axe violations axe-core 4.13.0, full rule set

16 violating nodes across 4 rules, 92 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 9 nodes
  • moderate region — All page content should be contained by landmarks 5 nodes
  • moderate landmark-one-main — Document should have one main landmark 1 node
  • moderate page-has-heading-one — Page should contain a level-one heading 1 node

Accessibility failures 3 of 14 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 9 nodes
  • target-size — Touch targets do not have sufficient size or spacing. 2 nodes
  • landmark-one-main — Document does not have a main landmark. 1 node

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 21, 2026, 3:14 AM UTC 95 2.41 s 0.039 79 ms 502.8 kB 3/3 ±4 2,492 22.4s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show marcoslooten.com's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify-score.js component code into your site!

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://marcoslooten.com/"></speedlify-score>