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

zacharyparsons.co.uk

https://zacharyparsons.co.uk/

100 100 100 100 ✓AXE –CWV

Ranks Overall #65 Built Awesome #58

Data from Aug 31, 2026, 10:35 AM UTC old Measured once a week · 2 runs since Aug 21, 2026

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

Stack

Netlify Hosted by Netlify

Lighthouse Scores

100
Performance
↑ +1 (+1%)
100
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 821 ms 2.08 s ↓ -1261 ms (-60.6%) 821 ms 2.08 s
CLS Cumulative Layout Shift 0.017 0.017 → no change 0.017 0.017
TBT Total Blocking Time 25 ms 33 ms ↓ -8 ms (-24.2%) 25 ms 33 ms
FCP First Contentful Paint 821 ms 966 ms ↓ -145 ms (-15%) 821 ms 966 ms
Speed Index 821 ms 966 ms ↓ -145 ms (-15%) 821 ms 966 ms
TTFB Time to First Byte 631 ms 765 ms ↓ -134 ms (-17.5%) 631 ms 765 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 37 ms
time to first byte 30 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 97.8 kB 98.1 kB ↓ -363 B (-0.4%) 97.8 kB 98.1 kB
Requests 9 9 → no change 9 9
Third-party Weight 60.0 kB 60.0 kB ↑ +72 B (+0.1%) 60.0 kB 60.0 kB
Third-party CPU 26 ms 30 ms ↓ -4 ms (-14.1%) 26 ms 30 ms
Unused JS 0 B 0 B → no change 0 B 0 B
Unused CSS 21.3 kB 21.3 kB → no change 21.3 kB 21.3 kB

By resource type

  • script 61.9% 60.5 kB · 3 req
  • font 26.3% 25.7 kB · 1 req
  • other 6.6% 6.4 kB · 4 req
  • document 5.2% 5.1 kB · 1 req

Third parties 3 entities

60.0 kB transferred, 26 ms on the main thread.

Netlify 55.3 kB · 24 ms CPU
zgo.at 4.4 kB · 2 ms CPU
goatcounter.com 381 B · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 285 ms 329 ms ↓ -44 ms (-13.4%) 285 ms 329 ms
Long Tasks 1 1 → no change 1 1
DOM Elements 60 60 → no change 60 60
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

script evaluation 95 ms
other 90 ms
style layout 58 ms
script parse compile 24 ms
parse HTML 13 ms
paint composite render 5 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 162 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
Aug 31, 2026, 10:35 AM UTC 100 821 ms 0.017 25 ms 97.8 kB 3/3 ±0 2,350 -5% 23.9s
Aug 21, 2026, 8:32 PM UTC 99 2.08 s 0.017 33 ms 98.1 kB 3/3 ±1 2,485 0% 21.2s

Embed this score

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