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 ·

chromatic.live

https://chromatic.live/

Data from Aug 20, 2026, 8:27 PM UTC — 21h old.

Built Awesome · 1 measurement · since Aug 20, 2026 · last attempt 21h

This URL redirects to https://chromatichq.com/.

Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. Not yet confirmed as a move; it needs to lead to the same place on several consecutive runs first.

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 2.0.1 Built with Eleventy 2.0.1
Netlify Hosted by Netlify

Scores

44
Performance
no change
93
Accessibility
no change
58
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 15.11 s — — 15.11 s 15.11 s
CLS Cumulative Layout Shift 0 — — 0 0
TBT Total Blocking Time 1.15 s — — 1.15 s 1.15 s
FCP First Contentful Paint 3.05 s — — 3.05 s 3.05 s
Speed Index 4.07 s — — 4.07 s 4.07 s
TTFB Time to First Byte 623 ms — — 623 ms 623 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 2.02 s
time to first byte 118 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 1.91 MB — — 1.91 MB 1.91 MB
Requests 94 — — 94 94
Third-party Weight 1.44 MB — — 1.44 MB 1.44 MB
Third-party CPU 475 ms — — 475 ms 475 ms
Unused JS 308.8 kB — — 308.8 kB 308.8 kB
Unused CSS 24.8 kB — — 24.8 kB 24.8 kB

By resource type

script 1.24 MB · 31 req
font 319.2 kB · 7 req
image 230.2 kB · 36 req
stylesheet 73.2 kB · 4 req
document 36.4 kB · 3 req
other 18.6 kB · 13 req
third party 1.37 MB · 45 req

Third parties 8 entities

1.44 MB transferred, 475 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

chromatichq.com 540.5 kB · 13 ms CPU
Hubspot 335.6 kB · 92 ms CPU
Google CDN 320.2 kB · 57 ms CPU
Google Tag Manager 177.3 kB · 30 ms CPU
LinkedIn Ads 41.3 kB · 17 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 4.89 s — — 4.89 s 4.89 s
Long Tasks 17 — — 17 17
DOM Elements 336 — — 336 336
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 39 — — 39 39
A11y Failures 3 — — 3 3
A11y Failing Nodes 5 — — 5 5

Main thread work

script evaluation 2.67 s
other 1.13 s
style layout 482 ms
script parse compile 315 ms
paint composite render 160 ms
garbage collection 85 ms
parse HTML 43 ms

Axe violations axe-core 4.13.0, full rule set

39 violating nodes across 6 rules, 505 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
  • critical aria-required-attr — Required ARIA attributes must be provided 3 nodes
  • serious nested-interactive — Interactive controls must not be nested 3 nodes
  • moderate landmark-one-main — Document should have one main landmark 2 nodes
  • minor aria-allowed-role — ARIA role should be appropriate for the element 1 node
  • moderate heading-order — Heading levels should only increase by one 1 node

Accessibility failures 3 of 33 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.

  • aria-required-attr — `[role]`s do not have all required `[aria-*]` attributes 3 nodes
  • 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 20, 2026, 8:27 PM UTC 44 15.11 s 0 1.15 s 1.91 MB 3/3 ±13 2,467 43.6s

Embed this score

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