undefinednull.com
https://www.undefinednull.com/
Ranks Overall #234 Built Awesome #188
Data from Sep 14, 2026, 5:50 PM UTC old Measured once a week · 4 runs since Aug 21, 2026
Elsewhere:
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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 | 1.71 s good | ↓ -9 ms (-0.5%) 984 ms – 1.97 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 | 59 ms good | ↓ -21 ms (-26.2%) 59 ms – 80 ms | |
| FCP First Contentful Paint | 1.71 s good | ↓ -9 ms (-0.5%) 984 ms – 1.72 s | |
| Speed Index | 1.71 s good | ↓ -9 ms (-0.5%) 984 ms – 1.72 s | |
| TTFB Time to First Byte | 631 ms good | ↑ +149 ms (+30.9%) significant 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 | ↓ -1.0 kB (-0.1%) 1.13 MB – 1.14 MB | |
| Requests | 39 | ↓ -3 (-7.1%) 39 – 42 | |
| Third-party Weight | 209 kB | ↓ -2.3 kB (-1.1%) 206 kB – 211 kB | |
| Third-party CPU | 60 ms | ↓ -8 ms (-12%) significant 60 ms – 68 ms | |
| Unused JS | 81.0 kB | ↑ +1.9 kB (+2.5%) 78.8 kB – 81.0 kB | |
| Unused CSS | 12.7 kB | ↑ +4 B 12.7 kB – 12.7 kB |
By resource type
| Type | Transfer | Share | Size | Requests |
|---|---|---|---|---|
| other | 78.4% | 879 kB | 34 | |
| script | 18.6% | 208 kB | 3 | |
| document | 2.9% | 33.0 kB | 1 | |
| Total | 1.14 MB | 39 |
Third parties 3 entities
| Entity | Transfer | Size | Main thread Simulated |
|---|---|---|---|
| Google Tag Manager | 177 kB | 43 ms | |
| Google Analytics | 20.9 kB | 12 ms | |
| Cloudflare | 10.2 kB | 4 ms | |
| Total | 209 kB | 60 ms |
Page health
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Main Thread Work | 571 ms | ↓ -67 ms (-10.6%) significant 565 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 | 50% | 286 ms | |
| other | 23% | 132 ms | |
| style layout | 14% | 78 ms | |
| script parse compile | 8% | 47 ms | |
| paint composite render | 3% | 17 ms | |
| parse HTML | 2% | 13 ms | |
| Total | 571 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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>