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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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zachleat.com/about

https://www.zachleat.com/about

100 100 100 100 ✓AXE ✓CWV

Ranks Overall #18 zachleat #1

Data from Sep 14, 2026, 9:33 PM UTC old Measured once a week · 7 runs since Aug 21, 2026

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

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

Stack

Build Awesome 4.0.0 Built with Build Awesome 4.0.0
Netlify Hosted by Netlify

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 3.00 s. Compare this filmstrip against another site.

  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

Lighthouse Scores LAB Simulated

100
Performance
↑ +2 (+2%)
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-08-16 → 2026-09-12), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 1.68 s good ↓ -668 ms (-28.5%) significant 1.66 s – 2.34 s 1.36 s good 89.4% 9.1% 1.5%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0.003 good ↑ +0.001 (+50%) 0.001 – 0.003 0 good 99.3% 0.7% 0%
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms n/a —
FCP First Contentful Paint 976 ms good ↓ -255 ms (-20.7%) 962 ms – 1.72 s 1.17 s good 90.3% 8.3% 1.4%
Speed Index 976 ms good ↓ -255 ms (-20.7%) significant 962 ms – 1.72 s n/a —
TTFB Time to First Byte 624 ms good ↑ +18 ms (+3%) 605 ms – 657 ms 883 ms needs work 73% 22.5% 4.5%

LCP Subparts LAB Throttled

The subparts attribute LCP to your server, resource discovery, download, or rendering. They come from one throttled load, the same one as the filmstrip, so they add up to that load’s LCP rather than the simulated Lab LCP above.

resource load duration 1.06 s
time to first byte 587 ms
resource load delay 69 ms
element render delay 15 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.68 s
Field p75 1.36 s

The lab LCP is 1.23× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 242 kB ↑ +3.1 kB (+1.3%) 239 kB – 253 kB
Requests 24 → no change 23 – 25
Third-party Weight 19.9 kB ↓ -13 B (-0.1%) 19.9 kB – 30.2 kB
Third-party CPU 2 ms ↓ -1 ms (-40%) 2 ms – 3 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 51.5% 125 kB 10
font 29.2% 70.8 kB 5
document 11.1% 27.0 kB 1
script 4.9% 11.9 kB 4
other 1.7% 4.1 kB 3
stylesheet 1.5% 3.7 kB 1
Total 242 kB 24

Third parties 3 entities

Entity Transfer Size Main thread Simulated
11ty.dev image 15.1 kB 0 ms
zgo.at script 4.3 kB 2 ms
goatcounter.com 382 B 0 ms
Total 19.9 kB 2 ms

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.

Page health

Metric Value Change / range Trend
Main Thread Work 367 ms ↑ +3 ms (+0.7%) 348 ms – 669 ms
Long Tasks 0 → no change 0 – 1
DOM Elements 644 ↑ +56 (+9.5%) significant 588 – 644
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 0 → no change 0 – 1
A11y Failing Nodes 0 → no change 0 – 1

Main thread work

Task Time Share Duration Simulated
style layout 34% 127 ms
other 34% 124 ms
script evaluation 14% 51 ms
paint composite render 11% 39 ms
parse HTML 7% 24 ms
script parse compile 1% 2 ms
Total 367 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 978 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

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-09-05 1.27 s — 0 1.11 s 831 ms
2026-08-29 1.19 s — 0 1.05 s 747 ms
2026-08-22 1.11 s — 0 1.04 s 693 ms
2026-08-15 1.08 s — 0 1.01 s 693 ms
2026-08-08 1.15 s — 0 1.08 s 703 ms
2026-08-01 1.09 s — 0 1.04 s 693 ms
2026-05-23 → 2026-07-25 No data — 10 weeks under the CrUX reporting threshold
2026-05-16 846 ms — 0 741 ms 557 ms
2026-04-11 → 2026-05-09 No data — 5 weeks under the CrUX reporting threshold
2026-04-04 1.19 s — 0 920 ms 616 ms
2026-03-28 1.09 s — 0 856 ms 575 ms
2026-03-21 1.19 s — 0 955 ms 693 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 14, 2026, 9:33 PM UTC 100 1.68 s 0.003 0 ms 242 kB 3/3 ±2 3,020 +22% 40.9s Wayback
Sep 7, 2026, 7:01 PM UTC 98 2.34 s 0.002 0 ms 239 kB 3/3 ±1 2,265 -9% 23.2s Wayback
Aug 31, 2026, 5:54 PM UTC 98 2.32 s 0.002 0 ms 253 kB 3/3 ±3 2,345 -6% 25s Wayback
Aug 24, 2026, 1:50 PM UTC 99 1.80 s 0.002 0 ms 252 kB 3/3 ±3 2,315 -7% 26.2s Wayback
Aug 23, 2026, 1:31 PM UTC 99 1.90 s 0.001 0 ms 251 kB 3/3 ±12 2,476 0% 27.4s Wayback
Aug 22, 2026, 1:30 PM UTC 100 1.66 s 0.001 0 ms 245 kB 3/3 ±8 2,929 +18% 25.9s Wayback
Aug 21, 2026, 12:55 PM UTC 100 1.79 s 0.002 0 ms 242 kB 3/3 ±9 2,301 -7% 26.9s Wayback

Embed this score

Use this web component to show zachleat.com/about'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://www.zachleat.com/about"></speedlify2-score>