sonnet.io
Ranks Overall #351 Built Awesome #285
Data from Sep 6, 2026, 10:29 AM UTC old Measured once a week · 3 runs since Aug 21, 2026
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Lighthouse Scores
Metrics Lighthouse, mobile
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 Lighthouse | ||
|---|---|---|---|
| Value | Change / range | Trend | |
| LCP CWV (estimate) Largest Contentful Paint | 1.58 s good | ↑ +22 ms (+1.4%) 1.56 s – 3.34 s | |
| INP CWV Interaction to Next Paint — field only, no lab run can measure it | n/a | — | |
| CLS CWV (estimate) Cumulative Layout Shift | 0.070 good | ↑ +0.016 (+29.6%) 0.054 – 0.070 | |
| TBT Total Blocking Time | 0 ms good | → no change 0 ms – 0 ms | |
| FCP First Contentful Paint | 1.58 s good | ↑ +22 ms (+1.4%) 1.56 s – 3.34 s | |
| Speed Index | 1.58 s good | ↑ +22 ms (+1.4%) 1.56 s – 3.34 s | |
| TTFB Time to First Byte | 630 ms good | ↓ -1 ms (-0.2%) 612 ms – 631 ms | |
LCP Subparts lab observed, unthrottled
The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is throttled.
Page weight
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Page Weight | 196 kB | ↑ +1.3 kB (+0.7%) 195 kB – 196 kB | |
| Requests | 11 | → no change 11 – 11 | |
| Third-party Weight | 184 kB | ↑ +765 B (+0.4%) 184 kB – 184 kB | |
| Third-party CPU | 2 ms | ↑ +0 ms (+11.1%) 2 ms – 2 ms | |
| Unused JS | 0 B | → no change 0 B – 0 B | |
| Unused CSS | 0 B | → no change 0 B – 0 B |
By resource type
- font 91.9% 180 kB · 3 req
- stylesheet 4.7% 9.3 kB · 2 req
- other 1.2% 2.4 kB · 4 req
- document 1.1% 2.2 kB · 1 req
- script 1% 2.0 kB · 1 req
Third parties 2 entities
184 kB transferred, 2 ms on the main thread.
Page health
| Metric | Value | Change / range | Trend |
|---|---|---|---|
| Main Thread Work | 186 ms | ↑ +50 ms (+36.4%) 137 ms – 192 ms | |
| Long Tasks | 0 | → no change 0 – 0 | |
| DOM Elements | 42 | → no change 42 – 42 | |
| 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
Axe violations axe-core 4.13.0, full rule set
0 violating nodes across 0 rules, 98 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.
Hygiene
Measurement log
Field history 25 weeks
Weekly p75 from the CrUX History API, backfilled in a single request.
| Week ending | LCP | INP | CLS | FCP | TTFB |
|---|---|---|---|---|---|
| 2026-05-09 → 2026-09-05 | No data — 18 weeks under the CrUX reporting threshold | ||||
| 2026-05-02 | 1.17 s | — | 0 | 1.16 s | 476 ms |
| 2026-04-25 | 1.46 s | — | 0 | 1.34 s | 522 ms |
| 2026-04-18 | 1.49 s | — | 0 | 1.34 s | 533 ms |
| 2026-04-11 | 1.47 s | — | 0 | 1.32 s | 545 ms |
| 2026-04-04 | 1.30 s | — | 0 | 1.22 s | 498 ms |
| 2026-03-21 → 2026-03-28 | No data — 2 weeks under the CrUX reporting threshold | ||||
Runs
Every stored run for this URL, newest first.
| When | Scores | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took | Archive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 6, 2026, 10:29 AM UTC | 98 | 1.58 s | 0.070 | 0 ms | 196 kB | 3/3 | ±1 | 2,645 +7% | 25.1s |
|
|
| Aug 30, 2026, 8:04 AM UTC | 99 | 1.56 s | 0.054 | 0 ms | 195 kB | 3/3 | ±1 | 3,249 +31% | 24.1s |
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| Aug 21, 2026, 6:52 AM UTC | 84 | 3.34 s | 0.070 | 0 ms | 196 kB | 3/3 | ±0 | 2,494 +1% | 24.6s |
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Embed this score
Use this web component to show sonnet.io'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://sonnet.io/"></speedlify2-score>