lenny.fyi
Ranks Overall #370 Built Awesome #288
Data from Oct 4, 2026, 4:41 AM UTC old Measured once a week · 7 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
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 | 2.68 s needs work | ↑ +83 ms (+3.2%) 2.05 s – 2.82 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 | 0 ms good | → no change 0 ms – 0 ms | |
| FCP First Contentful Paint | 1.11 s good | ↑ +79 ms (+7.6%) significant 1.02 s – 1.26 s | |
| Speed Index | 3.99 s needs work | ↑ +26 ms (+0.7%) 2.34 s – 4.03 s | |
| TTFB Time to First Byte | 910 ms needs work | ↑ +79 ms (+9.5%) significant 812 ms – 1.06 s | |
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 | 141 kB | ↓ -237 B (-0.2%) 138 kB – 141 kB | |
| Requests | 21 | → no change 20 – 21 | |
| Third-party Weight | 441 B | → no change 0 B – 446 B | |
| Third-party CPU | 0 ms | → no change 0 ms – 0 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 |
|---|---|---|---|---|
| font | 79.7% | 99.5 kB | 4 | |
| image | 10.7% | 13.4 kB | 1 | |
| stylesheet | 4.9% | 6.2 kB | 1 | |
| script | 2.6% | 3.3 kB | 1 | |
| document | 1.7% | 2.1 kB | 1 | |
| other | 0.4% | 441 B | 1 | |
| Total | 141 kB | 21 |
Third parties 1 entities
| Entity | Transfer | Size | Main thread Simulated |
|---|---|---|---|
| speedlify.dev | 441 B | 0 ms | |
| Total | 441 B | 0 ms |
Page health
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Main Thread Work | 231 ms | ↓ -14 ms (-5.5%) 176 ms – 261 ms | |
| Long Tasks | 0 | → no change 0 – 0 | |
| DOM Elements | 121 | → no change 90 – 121 | |
| Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) | 0 | → no change 0 – 1 | |
| A11y Failures | 0 | → no change 0 – 0 | |
| A11y Failing Nodes | 0 | → no change 0 – 0 |
Main thread work
| Task | Time | Share | Duration Simulated |
|---|---|---|---|
| other | 42% | 98 ms | |
| style layout | 37% | 87 ms | |
| script evaluation | 10% | 24 ms | |
| paint composite render | 5% | 12 ms | |
| parse HTML | 4% | 9 ms | |
| script parse compile | 0% | 1 ms | |
| Total | 231 ms |
Axe violations axe-core 4.13.0, full rule set
0 violating nodes across 0 rules, 348 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 4, 2026, 4:41 AM UTC | 95 | 2.68 s | 0 | 0 ms | 141 kB | 3/3 | ±2 | 2,462 -1% | 27.5s |
|
|
| Sep 27, 2026, 12:27 AM UTC | 95 | 2.60 s | 0 | 0 ms | 141 kB | 3/3 | ±3 | 2,499 +1% | 27.6s |
|
|
| Sep 19, 2026, 10:18 PM UTC | 95 | 2.58 s | 0 | 0 ms | 141 kB | 3/3 | ±3 | 2,488 0% | 28s |
|
|
| Sep 12, 2026, 9:22 PM UTC | 95 | 2.60 s | 0 | 0 ms | 141 kB | 3/3 | ±3 | 2,488 0% | 27.8s |
|
|
| Sep 5, 2026, 8:03 PM UTC | 93 | 2.82 s | 0 | 0 ms | 141 kB | 3/3 | ±8 | 2,472 -1% | 28s |
|
|
| Aug 29, 2026, 7:40 PM UTC | 99 | 2.05 s | 0 | 0 ms | 138 kB | 3/3 | ±8 | 3,063 +23% | 25.4s |
|
|
| Aug 21, 2026, 3:09 AM UTC | 97 | 2.05 s | 0 | 0 ms | 138 kB | 3/3 | ±2 | 2,431 -2% | 27.7s |
|
Embed this score
Use this web component to show lenny.fyi'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://lenny.fyi/"></speedlify2-score>