storybot.dev
Data from Aug 21, 2026, 8:44 AM UTC — 10h old.
Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 10h
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 | 7.06 s | — | — | 7.06 s | 7.06 s | |
| CLS Cumulative Layout Shift | 0 | — | — | 0 | 0 | |
| TBT Total Blocking Time | 0 ms | — | — | 0 ms | 0 ms | |
| FCP First Contentful Paint | 2.46 s | — | — | 2.46 s | 2.46 s | |
| Speed Index | 2.46 s | — | — | 2.46 s | 2.46 s | |
| TTFB Time to First Byte | 609 ms | — | — | 609 ms | 609 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 | 1.01 MB | — | — | 1.01 MB | 1.01 MB | |
| Requests | 17 | — | — | 17 | 17 | |
| Third-party Weight | 93.7 kB | — | — | 93.7 kB | 93.7 kB | |
| Third-party CPU | 3 ms | — | — | 3 ms | 3 ms | |
| Unused JS | 0 B | — | — | 0 B | 0 B | |
| Unused CSS | 13.9 kB | — | — | 13.9 kB | 13.9 kB |
By resource type
Third parties 3 entities
93.7 kB transferred, 3 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 | 828 ms | — | — | 828 ms | 828 ms | |
| Long Tasks | 0 | — | — | 0 | 0 | |
| DOM Elements | 99 | — | — | 99 | 99 | |
| Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset | 8 | — | — | 8 | 8 | |
| A11y Failures | 3 | — | — | 3 | 3 | |
| A11y Failing Nodes | 10 | — | — | 10 | 10 |
Main thread work
Axe violations axe-core 4.13.0, full rule set
8 violating nodes across 2 rules, 171 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.
-
serious
color-contrast— Elements must meet minimum color contrast ratio thresholds 5 nodes -
moderate
heading-order— Heading levels should only increase by one 3 nodes
Accessibility failures 3 of 13 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. 5 nodes -
heading-order— Heading elements are not in a sequentially-descending order 3 nodes -
target-size— Touch targets do not have sufficient size or spacing. 2 nodes
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, 8:44 AM UTC | 73 | 7.06 s | 0 | 0 ms | 1.01 MB | 3/3 | ±4 | 2,474 | 23s |
Embed this score
Live below, then the markup that produces it. Drop that on any page to show
storybot.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://storybot.dev/"></speedlify-score>