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

wtf.smth.uk

https://wtf.smth.uk/

100 100 100 100 ✓AXE –CWV

Ranks Overall #192 Built Awesome #157

Data from Sep 6, 2026, 7:01 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

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 783 ms 789 ms ↓ -6 ms (-0.8%) 783 ms 856 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 783 ms 789 ms ↓ -6 ms (-0.8%) 783 ms 856 ms
Speed Index 783 ms 789 ms ↓ -6 ms (-0.8%) 783 ms 856 ms
TTFB Time to First Byte 610 ms 615 ms ↓ -5 ms (-0.8%) 610 ms 682 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 42 ms
time to first byte 7 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 739 kB 739 kB ↑ +53 B 739 kB 762 kB
Requests 11 11 → no change 11 12
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

  • media 99.8% 738 kB · 10 req
  • document 0.2% 1.4 kB · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 265 ms 295 ms ↓ -30 ms (-10.2%) 264 ms 295 ms
Long Tasks 0 0 → no change 0 0
DOM Elements 31 31 → no change 31 31
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 203 ms
style layout 30 ms
script evaluation 15 ms
parse HTML 13 ms
paint composite render 3 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 51 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 6, 2026, 7:01 PM UTC 100 783 ms 0 0 ms 739 kB 3/3 ±0 2,513 +1% 20.3s
Aug 30, 2026, 6:06 PM UTC 100 789 ms 0 0 ms 739 kB 3/3 ±0 2,483 0% 20.7s
Aug 21, 2026, 10:40 AM UTC 100 856 ms 0 0 ms 762 kB 3/3 ±0 2,307 -7% 21.8s

Embed this score

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