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 ·

urbanflow.art

https://urbanflow.art/

100 93 96 100 –CWV 6AXE

Data from Aug 21, 2026, 8:42 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.

Eleventy 3.1.2 Built with Eleventy 3.1.2
HT Hosted by HTTP Server

Scores

100
Performance
no change
93
Accessibility
no change
96
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 925 ms — — 925 ms 925 ms
CLS Cumulative Layout Shift 0.001 — — 0.001 0.001
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 925 ms — — 925 ms 925 ms
Speed Index 1.31 s — — 1.31 s 1.31 s
TTFB Time to First Byte 736 ms — — 736 ms 736 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.

time to first byte 140 ms
element render delay 46 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 4.32 MB — — 4.32 MB 4.32 MB
Requests 18 — — 18 18
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

media 3.67 MB · 1 req
font 403.5 kB · 5 req
image 207.3 kB · 10 req
document 5.2 kB · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 390 ms — — 390 ms 390 ms
Long Tasks 0 — — 0 0
DOM Elements 113 — — 113 113
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 6 — — 6 6
A11y Failures 2 — — 2 2
A11y Failing Nodes 2 — — 2 2

Main thread work

other 255 ms
style layout 69 ms
paint composite render 36 ms
script evaluation 16 ms
parse HTML 12 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

6 violating nodes across 3 rules, 180 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 4 nodes
  • moderate heading-order — Heading levels should only increase by one 1 node
  • moderate landmark-one-main — Document should have one main landmark 1 node

Accessibility failures 2 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.

  • heading-order — Heading elements are not in a sequentially-descending order 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, 8:42 AM UTC 100 925 ms 0.001 0 ms 4.32 MB 3/3 ±12 2,700 111.7s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show urbanflow.art'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://urbanflow.art/"></speedlify-score>