speedlify2

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

Charts Compare Measurement runs Embed a score

markboulton.co.uk

https://markboulton.co.uk/

99 94 100 91 !AXE –CWV

Ranks Overall #797 Built Awesome #631

Data from Sep 5, 2026, 10:39 PM UTC old Measured once a week · 3 runs since Aug 21, 2026

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

Stack

Netlify Hosted by Netlify

Lighthouse Scores

99
Performance
no change
94
Accessibility
no change
100
Best Practices
no change
91
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 1.36 s good ↑ +2 ms (+0.1%) 1.36 s – 1.39 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.071 good → no change 0.071 – 0.071
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 779 ms good ↓ -1 ms (-0.1%) 779 ms – 814 ms
Speed Index 779 ms good ↓ -1 ms (-0.1%) 779 ms – 814 ms
TTFB Time to First Byte 607 ms good ↑ +2 ms (+0.3%) 605 ms – 631 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 38 ms
time to first byte 9 ms

Page weight

Metric Value Change / range Trend
Page Weight 106 kB ↓ -14 B 106 kB – 106 kB
Requests 9 → no change 9 – 9
Third-party Weight 0 B → no change 0 B – 0 B
Third-party CPU 0 ms → no change 0 ms – 0 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 91.4% 96.2 kB · 2 req
  • stylesheet 5% 5.3 kB · 1 req
  • document 1.6% 1.7 kB · 1 req
  • script 1% 1.1 kB · 1 req
  • other 1% 1.1 kB · 2 req

Page health

Metric Value Change / range Trend
Main Thread Work 124 ms ↓ -21 ms (-14.7%) 124 ms – 172 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 57 → no change 57 – 57
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

other 68 ms
style layout 32 ms
script evaluation 12 ms
paint composite render 6 ms
parse HTML 6 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 144 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • critical button-name — Buttons must have discernible text 1 node

Accessibility failures 1 of 23 audits

  • button-name — Buttons do not have an accessible name 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 5, 2026, 10:39 PM UTC 99 1.36 s 0.071 0 ms 106 kB 3/3 ±0 2,997 +21% 19s Wayback
Aug 29, 2026, 10:23 PM UTC 99 1.36 s 0.071 0 ms 106 kB 3/3 ±1 2,978 +20% 23.3s Wayback
Aug 21, 2026, 3:05 AM UTC 99 1.39 s 0.071 0 ms 106 kB 3/3 ±1 2,389 -4% 22.2s Wayback

Embed this score

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