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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zachleat.com

https://www.zachleat.com/

99PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV

Ranks Overall #232 Built Awesome #185 zachleat #3

Data from Oct 6, 2026, 5:12 AM UTC old Measured once a week · 10 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · 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
Uses Font AwesomeFont Awesome
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

99
Performance
↓ -1 (-1%)
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

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

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-06 → 2026-10-03), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 2.12 s good ↑ +445 ms (+26.6%) significant 1.08 s – 2.18 s 1.04 s good 96.9% 2.2% 0.9%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 87 ms good 94.8% 5.2% 0%
CLS CWV Cumulative Layout Shift 0.006 good ↓ -0.001 (-14.3%) significant 0.001 – 0.007 0 good 99.1% 0.9% 0%
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms n/a —
FCP First Contentful Paint 1.21 s good ↑ +133 ms (+12.4%) 981 ms – 1.71 s 996 ms good 93.4% 4.9% 1.8%
Speed Index 1.21 s good ↑ +133 ms (+12.4%) 981 ms – 1.71 s n/a —
TTFB Time to First Byte 605 ms good ↓ -17 ms (-2.7%) 605 ms – 635 ms 637 ms good 80.7% 15.5% 3.8%

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.

time to first byte 567 ms
element render delay 365 ms

LCP LAB Simulated vs LCP FIELD

Lab 2.12 s
Field p75 1.04 s

The lab LCP is 2.04× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 208 kB ↓ -2.9 kB (-1.4%) 128 kB – 211 kB
Requests 50 ↓ -3 (-5.7%) 19 – 53
Third-party Weight 63.2 kB ↓ -3.5 kB (-5.4%) 14.4 kB – 66.8 kB
Third-party CPU 2 ms ↑ +1 ms (+71.4%) significant 1 ms – 5 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 10.3 kB

By resource type

Type Transfer Share Size Requests
image 36.1% 74.9 kB 35
font 34.1% 70.7 kB 5
document 18.9% 39.3 kB 1
script 6.2% 12.8 kB 5
stylesheet 2.8% 5.8 kB 1
other 2% 4.1 kB 3
Total 208 kB 50

Third parties 3 entities

Entity Transfer Size Main thread Simulated
11ty.dev image 58.4 kB 0 ms
zgo.at 4.4 kB 2 ms
goatcounter.com 382 B 0 ms
Total 63.2 kB 2 ms

Without JavaScript

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

Scripts disabled
As rendered

0.1% of pixels differ — they are nearly 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 571 ms ↑ +35 ms (+6.5%) 306 ms – 571 ms
Long Tasks 1 → no change 0 – 1
DOM Elements 1,124 ↑ +115 (+11.4%) significant 466 – 1,124
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
other 34% 194 ms
style layout 29% 166 ms
script evaluation 19% 106 ms
parse HTML 9% 54 ms
paint composite render 8% 47 ms
script parse compile 1% 5 ms
Total 571 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 1289 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
2026-09-26 1.09 s 88 ms 0 1.08 s 702 ms
2026-09-19 1.20 s — 0 1.08 s 829 ms
2026-09-12 1.36 s — 0 1.17 s 883 ms
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

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 6, 2026, 5:12 AM UTC 99 2.12 s 0.006 0 ms 208 kB 3/3 ±2 2,485 0% 50.3s Wayback
Sep 29, 2026, 4:51 AM UTC 100 1.67 s 0.007 0 ms 211 kB 3/3 ±0 3,005 +21% 50.9s Wayback
Sep 21, 2026, 11:27 PM UTC 100 1.08 s 0.001 0 ms 134 kB 3/3 ±1 2,992 +20% 38.2s Wayback
Sep 14, 2026, 9:33 PM UTC 99 1.96 s 0.007 0 ms 128 kB 3/3 ±2 2,330 -6% 40.6s Wayback
Sep 7, 2026, 7:01 PM UTC 100 1.70 s 0.001 0 ms 129 kB 3/3 ±10 2,477 0% 24.8s Wayback
Aug 31, 2026, 5:54 PM UTC 99 1.69 s 0.001 0 ms 144 kB 3/3 ±8 2,486 0% 26.3s Wayback
Aug 24, 2026, 3:38 PM UTC 98 1.98 s 0.001 0 ms 144 kB 3/3 ±9 2,861 +15% 25.2s Wayback
Aug 23, 2026, 3:20 PM UTC 98 2.18 s 0.001 0 ms 144 kB 3/3 ±10 2,360 -5% 27.9s Wayback
Aug 22, 2026, 3:19 PM UTC 100 1.69 s 0.001 0 ms 137 kB 3/3 ±0 2,490 0% 23.9s Wayback
Aug 21, 2026, 2:42 PM UTC 99 1.96 s 0.001 0 ms 135 kB 3/3 ±1 2,493 0% 26.1s Wayback

Embed this score

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