developers.thegreenwebfoundation.org
https://developers.thegreenwebfoundation.org/
Data from Aug 20, 2026, 9:29 PM UTC — 21h old.
Built Awesome · 1 measurement · since Aug 20, 2026 · last attempt 21h
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 | 1.83 s | — | — | 1.83 s | 1.83 s | |
| CLS Cumulative Layout Shift | 0.028 | — | — | 0.028 | 0.028 | |
| TBT Total Blocking Time | 0 ms | — | — | 0 ms | 0 ms | |
| FCP First Contentful Paint | 1.68 s | — | — | 1.68 s | 1.68 s | |
| Speed Index | 1.68 s | — | — | 1.68 s | 1.68 s | |
| TTFB Time to First Byte | 619 ms | — | — | 619 ms | 619 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 | 47.4 kB | — | — | 47.4 kB | 47.4 kB | |
| Requests | 11 | — | — | 11 | 11 | |
| Third-party Weight | 20.5 kB | — | — | 20.5 kB | 20.5 kB | |
| Third-party CPU | 7 ms | — | — | 7 ms | 7 ms | |
| Unused JS | 0 B | — | — | 0 B | 0 B | |
| Unused CSS | 11.5 kB | — | — | 11.5 kB | 11.5 kB |
By resource type
Third parties 3 entities
20.5 kB transferred, 7 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 | 304 ms | — | — | 304 ms | 304 ms | |
| Long Tasks | 0 | — | — | 0 | 0 | |
| DOM Elements | 314 | — | — | 314 | 314 | |
| Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset | 33 | — | — | 33 | 33 | |
| A11y Failures | 2 | — | — | 2 | 2 | |
| A11y Failing Nodes | 4 | — | — | 4 | 4 |
Main thread work
Axe violations axe-core 4.13.0, full rule set
33 violating nodes across 3 rules, 512 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 29 nodes -
serious
link-name— Links must have discernible text 3 nodes -
moderate
landmark-one-main— Document should have one main landmark 1 node
Accessibility failures 2 of 23 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.
-
link-name— Links do not have a discernible name 3 nodes -
landmark-one-main— Document does not have a main landmark. 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 20, 2026, 9:29 PM UTC | 99 | 1.83 s | 0.028 | 0 ms | 47.4 kB | 3/3 | ±2 | 2,380 | 23.8s |
Embed this score
Live below, then the markup that produces it. Drop that on any page to show
developers.thegreenwebfoundation.org'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://developers.thegreenwebfoundation.org/"></speedlify-score>