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

propernoun.smth.uk

https://propernoun.smth.uk/

100 100 100 100 ✓AXE –CWV

Ranks Overall #120 Built Awesome #104

Data from Sep 5, 2026, 10:49 PM UTC old Measured once a week · 3 runs since Aug 21, 2026

Test elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis

Stack

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Lighthouse Scores

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

Filmstrip Lighthouse, mobile

How the page drew during the measured load, at 8 points across 3.00 s.

  1. 375 ms
  2. 750 ms
  3. 1.13 s
  4. 1.50 s
  5. 1.88 s
  6. 2.25 s
  7. 2.63 s
  8. 3.00 s

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

Scripts disabled
As rendered

0% of pixels differ — they are identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 778 ms 783 ms ↓ -5 ms (-0.6%) 778 ms 789 ms
CLS Cumulative Layout Shift 0 0 → no change 0 0
TBT Total Blocking Time 0 ms 0 ms → no change 0 ms 0 ms
FCP First Contentful Paint 778 ms 783 ms ↓ -5 ms (-0.6%) 778 ms 789 ms
Speed Index 778 ms 783 ms ↓ -5 ms (-0.6%) 778 ms 789 ms
TTFB Time to First Byte 604 ms 604 ms → no change 604 ms 620 ms

LCP Subparts lab observed, unthrottled

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

element render delay 30 ms
resource load delay 7 ms
resource load duration 6 ms
time to first byte 5 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 25.6 kB 25.7 kB ↓ -70 B (-0.3%) 25.6 kB 25.7 kB
Requests 11 11 → no change 11 11
Third-party Weight 0 B 0 B → no change 0 B 0 B
Third-party CPU 0 ms 0 ms → no change 0 ms 0 ms
Unused JS 0 B 0 B → no change 0 B 0 B
Unused CSS 0 B 0 B → no change 0 B 0 B

By resource type

  • image 87.6% 21.5 kB · 9 req
  • document 12.4% 3.1 kB · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 157 ms 203 ms ↓ -45 ms (-22.3%) significant 157 ms 203 ms
Long Tasks 0 0 → no change 0 0
DOM Elements 250 250 → no change 250 250
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 0 → no change 0 0
A11y Failures 0 0 → no change 0 0
A11y Failing Nodes 0 0 → no change 0 0

Main thread work

other 104 ms
style layout 27 ms
script evaluation 11 ms
paint composite render 8 ms
parse HTML 6 ms
script parse compile 0 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 577 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

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
Sep 5, 2026, 10:49 PM UTC 100 778 ms 0 0 ms 25.6 kB 3/3 ±0 3,029 +22% 21.4s
Aug 29, 2026, 10:33 PM UTC 100 783 ms 0 0 ms 25.7 kB 3/3 ±0 2,482 0% 23.8s
Aug 21, 2026, 6:44 AM UTC 100 789 ms 0 0 ms 25.6 kB 3/3 ±5 2,668 +8% 27.2s

Embed this score

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