speedlify2

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

Charts Measurement runs Embed a score

sebduggan.uk

https://sebduggan.uk/

99 100 100 100 !AXE –CWV

Ranks Overall #570 Built Awesome #461

Data from Sep 6, 2026, 10:22 AM UTC old Measured once a week · 3 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Wayback Machine

Stack

Eleventy 4.0.0 Built with Eleventy 4.0.0
Cloudflare Hosted by Cloudflare

Lighthouse Scores

99
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics Lighthouse, mobile

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Lighthouse
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 1.56 s good ↓ -8 ms (-0.5%) 1.56 s – 1.57 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.56 s good ↓ -7 ms (-0.4%) 1.55 s – 1.56 s
Speed Index 1.56 s good ↓ -7 ms (-0.4%) 1.55 s – 1.56 s
TTFB Time to First Byte 632 ms good ↓ -7 ms (-1.1%) 630 ms – 639 ms

LCP Subparts lab observed, unthrottled

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

element render delay 84 ms
time to first byte 40 ms

Page weight

Metric Value Change / range Trend
Page Weight 72.5 kB ↑ +602 B (+0.8%) 71.9 kB – 73.7 kB
Requests 10 → no change 10 – 10
Third-party Weight 10.2 kB ↑ +615 B (+6.4%) 9.6 kB – 11.4 kB
Third-party CPU 4 ms ↓ -1 ms (-22.2%) 3 ms – 5 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

  • font 68% 49.3 kB · 3 req
  • script 17% 12.3 kB · 2 req
  • document 10.2% 7.4 kB · 1 req
  • other 4.8% 3.5 kB · 4 req

Third parties 1 entities

10.2 kB transferred, 4 ms on the main thread.

Cloudflare script 10.2 kB · 4 ms CPU

Page health

Metric Value Change / range Trend
Main Thread Work 196 ms ↓ -53 ms (-21.4%) 196 ms – 249 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 124 → no change 124 – 124
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 → no change 2 – 2
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

other 87 ms
script evaluation 53 ms
style layout 38 ms
parse HTML 10 ms
paint composite render 5 ms
script parse compile 2 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 230 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
  • 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 6, 2026, 10:22 AM UTC 99 1.56 s 0 0 ms 72.5 kB 3/3 ±0 2,251 -9% 20.8s Wayback
Aug 30, 2026, 7:55 AM UTC 99 1.57 s 0 0 ms 71.9 kB 3/3 ±0 2,712 +9% 22.2s Wayback
Aug 21, 2026, 7:54 AM UTC 99 1.56 s 0 0 ms 73.7 kB 3/3 ±0 2,818 +14% 26.6s Wayback

Embed this score

Use this web component to show sebduggan.uk'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://sebduggan.uk/"></speedlify2-score>