seancdavis.com/twenty-ninety
https://www.seancdavis.com/twenty-ninety
Ranks Overall #666 Build Awesome Starters #80
Data from Oct 13, 2026, 9:06 AM UTC old Measured once a week · 8 runs since Aug 21, 2026
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Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).
Stack
Lighthouse Scores LAB Simulated
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 | 815 ms good | ↓ -692 ms (-45.9%) 808 ms – 1.54 s | |
| INP CWV Interaction to Next Paint — field only, no lab run can measure it | n/a | — | |
| CLS CWV (estimate) Cumulative Layout Shift | 0.011 good | → no change 0.011 – 0.011 | |
| TBT Total Blocking Time | 63 ms good | ↑ +6 ms (+10.5%) 36 ms – 64 ms | |
| FCP First Contentful Paint | 815 ms good | ↑ +22 ms (+2.8%) 789 ms – 815 ms | |
| Speed Index | 815 ms good | ↑ +22 ms (+2.8%) 789 ms – 815 ms | |
| TTFB Time to First Byte | 628 ms good | ↑ +25 ms (+4.1%) 603 ms – 633 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.
Page weight
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Page Weight | 215 kB | ↑ +1.2 kB (+0.6%) 209 kB – 215 kB | |
| Requests | 8 | → no change 8 – 8 | |
| Third-party Weight | 189 kB | ↑ +1.3 kB (+0.7%) 183 kB – 189 kB | |
| Third-party CPU | 53 ms | ↑ +0 ms (+0.2%) 38 ms – 55 ms | |
| Unused JS | 73.9 kB | ↓ -501 B (-0.7%) 71.0 kB – 74.4 kB | |
| Unused CSS | 0 B | → no change 0 B – 0 B |
By resource type
| Type | Transfer | Share | Size | Requests |
|---|---|---|---|---|
| script | 93.9% | 202 kB | 3 | |
| document | 3.2% | 6.9 kB | 1 | |
| stylesheet | 1.1% | 2.4 kB | 1 | |
| image | 0.9% | 2.0 kB | 1 | |
| other | 0.8% | 1.8 kB | 2 | |
| Total | 215 kB | 8 |
Third parties 3 entities
| Entity | Transfer | Size | Main thread Simulated |
|---|---|---|---|
| Google Tag Manager | 166 kB | 45 ms | |
| Google Analytics | 20.9 kB | 8 ms | |
| Netlify | 2.0 kB | 0 ms | |
| Total | 189 kB | 53 ms |
Without JavaScript
The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.
6.9% 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 | 516 ms | ↓ -32 ms (-5.8%) 410 ms – 548 ms | |
| Long Tasks | 1 | → no change 1 – 1 | |
| DOM Elements | 247 | → no change 247 – 247 | |
| Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) | 4 | → no change 3 – 4 | |
| A11y Failures | 1 | → no change 1 – 1 | |
| A11y Failing Nodes | 1 | → no change 1 – 1 |
Main thread work
| Task | Time | Share | Duration Simulated |
|---|---|---|---|
| script evaluation | 55% | 284 ms | |
| other | 16% | 85 ms | |
| style layout | 14% | 72 ms | |
| script parse compile | 10% | 51 ms | |
| paint composite render | 3% | 17 ms | |
| parse HTML | 2% | 8 ms | |
| Total | 516 ms |
Axe violations axe-core 4.13.0, full rule set
4 violating nodes across 3 rules, 575 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.
-
moderate
region— All page content should be contained by landmarks 2 nodesOffending elements
-
.bg-blue<div class="bg-blue mb-12"> -
.max-w-2xl<div class="container max-w-2xl">
-
-
moderate
landmark-one-main— Document should have one main landmark 1 nodeOffending element
-
html<html lang="en">
-
-
serious
scrollable-region-focusable— Scrollable region must have keyboard access 1 nodeOffending element
-
pre:nth-child(37) > .hljs<code class="hljs">
-
Accessibility failures 1 of 14 audits
-
landmark-one-main— Document does not have a main landmark. 1 node
Hygiene
Measurement log
Every stored run for this URL, newest first.
| When | Scores | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took | Archive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 13, 2026, 9:06 AM UTC | 100 | 815 ms | 0.011 | 63 ms | 215 kB | 3/3 | ±0 | 2,487 0% | 24.8s |
|
|
| Oct 5, 2026, 11:52 PM UTC | 100 | 1.51 s | 0.011 | 57 ms | 214 kB | 3/3 | ±0 | 2,448 -2% | 25.2s |
|
|
| Sep 28, 2026, 6:31 PM UTC | 100 | 1.51 s | 0.011 | 52 ms | 213 kB | 3/3 | ±0 | 2,440 -2% | 25s |
|
|
| Sep 21, 2026, 2:55 PM UTC | 100 | 810 ms | 0.011 | 36 ms | 211 kB | 3/3 | ±0 | 3,425 +38% | 23.9s |
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| Sep 14, 2026, 11:56 AM UTC | 100 | 1.54 s | 0.011 | 52 ms | 211 kB | 3/3 | ±0 | 2,487 0% | 26s |
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| Sep 7, 2026, 9:03 AM UTC | 100 | 808 ms | 0.011 | 49 ms | 210 kB | 3/3 | ±0 | 2,825 +14% | 24.6s |
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| Aug 31, 2026, 3:58 AM UTC | 100 | 812 ms | 0.011 | 64 ms | 210 kB | 3/3 | ±1 | 2,354 -5% | 25.2s |
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| Aug 21, 2026, 7:33 PM UTC | 100 | 1.51 s | 0.011 | 56 ms | 209 kB | 3/3 | ±0 | 2,512 +1% | 24.4s |
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<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://www.seancdavis.com/twenty-ninety"></speedlify2-score>