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 ·

dockerwebdev.com

https://dockerwebdev.com/

99 95 100 100 –CWV 4AXE

Data from Aug 20, 2026, 9:27 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.

Cloudflare Hosted by Cloudflare

Scores

99
Performance
no change
95
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 2.01 s — — 2.01 s 2.01 s
CLS Cumulative Layout Shift 0 — — 0 0
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 946 ms — — 946 ms 946 ms
Speed Index 946 ms — — 946 ms 946 ms
TTFB Time to First Byte 473 ms — — 473 ms 473 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 122 ms
time to first byte 12 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 40.9 kB — — 40.9 kB 40.9 kB
Requests 21 — — 21 21
Third-party Weight 11.6 kB — — 11.6 kB 11.6 kB
Third-party CPU 9 ms — — 9 ms 9 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

script 16.4 kB · 3 req
other 12.4 kB · 6 req
document 12.1 kB · 1 req
third party 11.6 kB · 4 req

Third parties 3 entities

11.6 kB transferred, 9 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Cloudflare 11.5 kB · 8 ms CPU
Google Analytics 103 B · 0 ms CPU
cloudflareinsights.com 36 B · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 430 ms — — 430 ms 430 ms
Long Tasks 1 — — 1 1
DOM Elements 355 — — 355 355
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 4 — — 4 4
A11y Failures 1 — — 1 1
A11y Failing Nodes 3 — — 3 3

Main thread work

other 180 ms
style layout 125 ms
script evaluation 64 ms
paint composite render 40 ms
parse HTML 16 ms
script parse compile 6 ms

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 2 rules, 556 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 3 nodes
  • moderate region — All page content should be contained by landmarks 1 node

Accessibility failures 1 of 19 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. 3 nodes

Hygiene

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

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

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 20, 2026, 9:27 PM UTC 99 2.01 s 0 0 ms 40.9 kB 3/3 ±1 2,327 23.5s

Embed this score

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