speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

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fberriman.com/blog

https://fberriman.com/blog

92PERF 86A11Y 100BEST 92SEO ✗AXE –CWV

Ranks Overall #1,396 Built Awesome #947

Data from Oct 7, 2026, 9:53 AM UTC old Measured once a week · 11 runs since Aug 20, 2026

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

This URL redirects to https://fberriman.com/blog/.

The same URL in a different form — a trailing slash — so both are treated as one site rather than two: one history, measured once. Lighthouse follows the redirect, so the numbers below describe the page actually served; the only cost is an extra hop on each run.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

92
Performance
no change
86
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Metrics LAB

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 Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 2.45 s good ↑ +2 ms (+0.1%) 1.62 s – 2.67 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.094 good → no change 0.011 – 0.305
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 2.45 s needs work ↑ +2 ms (+0.1%) 1.56 s – 2.67 s
Speed Index 2.45 s good ↑ +2 ms (+0.1%) 1.56 s – 3.32 s
TTFB Time to First Byte 628 ms good ↓ -6 ms (-0.9%) 606 ms – 774 ms

LCP Subparts LAB Unthrottled

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

time to first byte 72 ms
element render delay 68 ms

Page weight

Metric Value Change / range Trend
Page Weight 300 kB ↓ -59 B 214 kB – 311 kB
Requests 18 → no change 17 – 18
Third-party Weight 43.9 kB → no change 43.9 kB – 44.2 kB
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

Type Transfer Share Size Requests
image 76.9% 229 kB 6
font 14.5% 43.2 kB 1
document 3.1% 9.3 kB 1
script 2.6% 7.9 kB 2
stylesheet 1.9% 5.6 kB 2
other 0.9% 2.8 kB 2
Total 300 kB 18

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Google Fonts font 43.9 kB 0 ms
Total 43.9 kB 0 ms

Page health

Metric Value Change / range Trend
Main Thread Work 308 ms ↑ +26 ms (+9.4%) 211 ms – 498 ms
Long Tasks 0 → no change 0 – 1
DOM Elements 198 → no change 198 – 198
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 26 → no change 26 – 30
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 28 → no change 28 – 28

Main thread work

Task Time Share Duration Simulated
other 39% 120 ms
style layout 33% 103 ms
paint composite render 18% 56 ms
script evaluation 5% 17 ms
parse HTML 3% 9 ms
script parse compile 1% 4 ms
Total 308 ms

Axe violations axe-core 4.13.0, full rule set

26 violating nodes across 1 rule, 398 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 26 nodes
    Offending elements (5 of 26)
    1. a[href$="art"] 
      <a href="/art">Art</a>
    2. li:nth-child(2) > a[href$="about"] 
      <a href="/about">About</a>
    3. a[href$="blog"] 
      <a href="/blog">Blog</a>
    4. a[href$="shop.fberriman.com"] 
      <a href="https://shop.fberriman.com">Shop</a>
    5. article:nth-child(1) > p:nth-child(3) > a:nth-child(2) 
      <a href="https://alicebartlett.co.uk/blog/weaknotes-401">turning her weekly notes into a printed and bound book</a>

Accessibility failures 2 of 14 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 26 nodes
  • target-size — Touch targets do not have sufficient size or spacing. 2 nodes

SEO failures 1 of 9 audits

  • meta-description — Document does not have a meta description

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
Oct 7, 2026, 9:53 AM UTC 92 2.45 s 0.094 0 ms 300 kB 3/3 ±1 2,455 -1% 27.2s Wayback
Sep 30, 2026, 8:04 AM UTC 92 2.45 s 0.094 0 ms 300 kB 3/3 ±28 2,486 0% 25.8s Wayback
Sep 23, 2026, 5:31 AM UTC 90 2.67 s 0.094 0 ms 259 kB 3/3 ±15 2,453 -1% 24.7s Wayback
Sep 16, 2026, 3:31 AM UTC 79 2.50 s 0.305 0 ms 311 kB 3/3 ±15 2,466 -1% 23.6s Wayback
Sep 9, 2026, 3:16 AM UTC 84 1.62 s 0.304 0 ms 311 kB 3/3 ±0 3,458 +39% 26.4s Wayback
Sep 2, 2026, 3:03 AM UTC 92 2.46 s 0.094 0 ms 311 kB 3/3 ±1 2,828 +14% 28.8s Wayback
Sep 1, 2026, 5:37 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 148s
Sep 1, 2026, 7:19 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 150.7s
Aug 31, 2026, 10:36 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 149.5s
Aug 29, 2026, 5:46 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 152.9s
Aug 20, 2026, 10:30 PM UTC 92 2.65 s 0.011 0 ms 214 kB 3/3 ±5 2,752 +11% 26.9s Wayback

Embed this score

Use this web component to show fberriman.com/blog'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://fberriman.com/blog"></speedlify2-score>