undefinednull.com
https://www.undefinednull.com/
Ranks Overall #284 Built Awesome #223
Data from Oct 6, 2026, 5:05 AM UTC old Measured once a week · 7 runs since Aug 21, 2026
Elsewhere:
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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
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 | 1.99 s good | ↑ +54 ms (+2.8%) 984 ms – 1.99 s | |
| INP CWV Interaction to Next Paint — field only, no lab run can measure it | n/a | — | |
| CLS CWV (estimate) Cumulative Layout Shift | 0 good | → no change 0 – 0 | |
| TBT Total Blocking Time | 74 ms good | ↑ +13 ms (+21.3%) significant 59 ms – 80 ms | |
| FCP First Contentful Paint | 1.68 s good | ↓ -257 ms (-13.3%) significant 984 ms – 1.94 s | |
| Speed Index | 1.68 s good | ↓ -257 ms (-13.3%) significant 984 ms – 1.94 s | |
| TTFB Time to First Byte | 470 ms good | ↓ -46 ms (-8.9%) 461 ms – 631 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 | 1.14 MB | ↑ +738 B (+0.1%) 1.13 MB – 1.14 MB | |
| Requests | 39 | ↓ -3 (-7.1%) 39 – 42 | |
| Third-party Weight | 212 kB | ↓ -1.7 kB (-0.8%) 206 kB – 213 kB | |
| Third-party CPU | 71 ms | ↑ +9 ms (+14.5%) significant 60 ms – 71 ms | |
| Unused JS | 82.7 kB | ↑ +3.3 kB (+4.2%) 78.8 kB – 82.7 kB | |
| Unused CSS | 12.7 kB | → no change 12.7 kB – 12.7 kB |
By resource type
| Type | Transfer | Share | Size | Requests |
|---|---|---|---|---|
| other | 78.2% | 878 kB | 34 | |
| script | 18.8% | 211 kB | 3 | |
| document | 2.9% | 33.1 kB | 1 | |
| Total | 1.14 MB | 39 |
Third parties 3 entities
| Entity | Transfer | Size | Main thread Simulated |
|---|---|---|---|
| Google Tag Manager | 180 kB | 51 ms | |
| Google Analytics | 20.9 kB | 14 ms | |
| Cloudflare | 10.2 kB | 6 ms | |
| Total | 212 kB | 71 ms |
Page health
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Main Thread Work | 614 ms | ↓ -18 ms (-2.9%) 541 ms – 639 ms | |
| Long Tasks | 1 | ↓ -2 (-66.7%) 1 – 3 | |
| DOM Elements | 192 | → no change 192 – 192 | |
| 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 – 0 | |
| A11y Failing Nodes | 0 | → no change 0 – 0 |
Main thread work
| Task | Time | Share | Duration Simulated |
|---|---|---|---|
| script evaluation | 54% | 332 ms | |
| other | 18% | 108 ms | |
| style layout | 14% | 85 ms | |
| script parse compile | 9% | 57 ms | |
| paint composite render | 3% | 16 ms | |
| parse HTML | 2% | 15 ms | |
| Total | 614 ms |
Axe violations axe-core 4.13.0, full rule set
0 violating nodes across 0 rules, 405 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.
Hygiene
Measurement log
Every stored run for this URL, newest first.
| When | Scores | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took | Archive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 6, 2026, 5:05 AM UTC | 98 | 1.99 s | 0 | 74 ms | 1.14 MB | 3/3 | ±0 | 2,452 -1% | 23.9s |
|
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| Sep 28, 2026, 11:48 PM UTC | 98 | 1.94 s | 0 | 61 ms | 1.14 MB | 3/3 | ±1 | 2,298 -8% | 23.6s |
|
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| Sep 21, 2026, 7:56 PM UTC | 99 | 1.70 s | 0 | 59 ms | 1.14 MB | 3/3 | ±1 | 2,331 -6% | 23.6s |
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| Sep 14, 2026, 5:50 PM UTC | 99 | 1.71 s | 0 | 59 ms | 1.14 MB | 3/3 | ±1 | 2,691 +8% | 23.9s |
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| Sep 7, 2026, 2:58 PM UTC | 99 | 1.72 s | 0 | 80 ms | 1.14 MB | 3/3 | ±2 | 2,328 -6% | 22.8s |
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| Aug 31, 2026, 10:38 AM UTC | 99 | 1.97 s | 0 | 61 ms | 1.13 MB | 3/3 | ±1 | 2,489 0% | 24.1s |
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| Aug 21, 2026, 2:40 PM UTC | 100 | 984 ms | 0 | 65 ms | 1.13 MB | 3/3 | ±0 | 2,354 -5% | 25.1s |
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Embed this score
Use this web component to show undefinednull.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.undefinednull.com/"></speedlify2-score>