jonwebb.dev
Data from Aug 21, 2026, 1:15 AM UTC — 16h old.
11ty Emeritus · 1 measurement · since Aug 21, 2026 · last attempt 16h
https://jonwebb.dev/Home.
Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. Not yet confirmed as a move; it needs to lead to the same place on several consecutive runs first.
Stack
Detected on the same page load as the accessibility pass — the generator
from <meta name="generator"> or the shape of the page,
the host from response headers.
Scores
Lab metrics Lighthouse, mobile
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| LCP Largest Contentful Paint | 3.22 s | — | — | 3.22 s | 3.22 s | |
| CLS Cumulative Layout Shift | 0 | — | — | 0 | 0 | |
| TBT Total Blocking Time | 41 ms | — | — | 41 ms | 41 ms | |
| FCP First Contentful Paint | 1.76 s | — | — | 1.76 s | 1.76 s | |
| Speed Index | 1.76 s | — | — | 1.76 s | 1.76 s | |
| TTFB Time to First Byte | 695 ms | — | — | 695 ms | 695 ms |
What LCP is made of
A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.
Page weight
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| Page Weight | 288.2 kB | — | — | 288.2 kB | 288.2 kB | |
| Requests | 9 | — | — | 9 | 9 | |
| Third-party Weight | 318.2 kB | — | — | 318.2 kB | 318.2 kB | |
| Third-party CPU | 56 ms | — | — | 56 ms | 56 ms | |
| Unused JS | 77.5 kB | — | — | 77.5 kB | 77.5 kB | |
| Unused CSS | 16.8 kB | — | — | 16.8 kB | 16.8 kB |
By resource type
Third parties 1 entities
318.2 kB transferred, 56 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.
Page health
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| Main Thread Work | 497 ms | — | — | 497 ms | 497 ms | |
| Long Tasks | 2 | — | — | 2 | 2 | |
| DOM Elements | 131 | — | — | 131 | 131 | |
| Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset | 15 | — | — | 15 | 15 | |
| A11y Failures | 2 | — | — | 2 | 2 | |
| A11y Failing Nodes | 2 | — | — | 2 | 2 |
Main thread work
Axe violations axe-core 4.13.0, full rule set
15 violating nodes across 3 rules, 157 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.
-
moderate
region— All page content should be contained by landmarks 11 nodes -
serious
color-contrast— Elements must meet minimum color contrast ratio thresholds 3 nodes -
moderate
landmark-one-main— Document should have one main landmark 1 node
Accessibility failures 2 of 25 audits
Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.
-
color-contrast— Background and foreground colors do not have a sufficient contrast ratio. 1 node -
label-content-name-mismatch— Elements with visible text labels do not have matching accessible names. 1 node
Hygiene
Changes rarely — which is exactly why a change is worth noticing.
Measurement log
Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.
| When | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took |
|---|---|---|---|---|---|---|---|---|---|
| Aug 21, 2026, 1:15 AM UTC | 92 | 3.22 s | 0 | 41 ms | 288.2 kB | 3/3 | ±3 | 2,493 | 22.3s |
Embed this score
Live below, then the markup that produces it. Drop that on any page to show
jonwebb.dev's scores, updated whenever this instance
re-measures — more about the component. Don’t forget to bundle the speedlify-score.js component code into your site!
<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://jonwebb.dev/"></speedlify-score>