speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time.

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

mithril-by-examples.js.org

https://mithril-by-examples.js.org/

100 83 100 92 –CWV 30AXE

Data from Aug 21, 2026, 4:44 AM UTC — 14h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 14h

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.

Eleventy Built with Eleventy
GitHub Pages Hosted by GitHub Pages

Scores

100
Performance
no change
83
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.54 s — — 1.54 s 1.54 s
CLS Cumulative Layout Shift 0 — — 0 0
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 787 ms — — 787 ms 787 ms
Speed Index 787 ms — — 787 ms 787 ms
TTFB Time to First Byte 615 ms — — 615 ms 615 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.

element render delay 53 ms
time to first byte 15 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 28.7 kB — — 28.7 kB 28.7 kB
Requests 8 — — 8 8
Third-party Weight 0 B — — 0 B 0 B
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

script 15.4 kB · 2 req
stylesheet 9.7 kB · 4 req
document 2.3 kB · 1 req
image 1.3 kB · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 161 ms — — 161 ms 161 ms
Long Tasks 0 — — 0 0
DOM Elements 119 — — 119 119
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 30 — — 30 30
A11y Failures 3 — — 3 3
A11y Failing Nodes 26 — — 26 26

Main thread work

other 87 ms
style layout 32 ms
script evaluation 23 ms
parse HTML 8 ms
script parse compile 7 ms
paint composite render 6 ms

Axe violations axe-core 4.13.0, full rule set

30 violating nodes across 3 rules, 242 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 24 nodes
  • moderate region — All page content should be contained by landmarks 5 nodes
  • moderate landmark-one-main — Document should have one main landmark 1 node

Accessibility failures 3 of 15 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. 24 nodes
  • link-name — Links do not have a discernible name 1 node
  • landmark-one-main — Document does not have a main landmark. 1 node

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

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 PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 21, 2026, 4:44 AM UTC 100 1.54 s 0 0 ms 28.7 kB 3/3 ±0 2,493 21s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show mithril-by-examples.js.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://mithril-by-examples.js.org/"></speedlify-score>