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 ·

eleventy-html5up-txt.appseed.us

https://eleventy-html5up-txt.appseed.us/

76 63 96 100 –CWV 47AXE

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.

Self-hosted · Apache Hosted by Self-hosted

Scores

76
Performance
no change
63
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 5.39 s — — 5.39 s 5.39 s
CLS Cumulative Layout Shift 0.036 — — 0.036 0.036
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 2.62 s — — 2.62 s 2.62 s
Speed Index 2.62 s — — 2.62 s 2.62 s
TTFB Time to First Byte 646 ms — — 646 ms 646 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.

resource load delay 195 ms
resource load duration 74 ms
time to first byte 38 ms
element render delay 29 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 698.2 kB — — 698.2 kB 698.2 kB
Requests 25 — — 25 25
Third-party Weight 55.6 kB — — 55.6 kB 55.6 kB
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 11.7 kB — — 11.7 kB 11.7 kB

By resource type

image 419.9 kB · 9 req
font 217.1 kB · 5 req
script 37.7 kB · 7 req
stylesheet 21.1 kB · 3 req
document 2.4 kB · 1 req
third party 55.6 kB · 3 req

Third parties 1 entities

55.6 kB transferred, 0 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Fonts 55.6 kB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 372 ms — — 372 ms 372 ms
Long Tasks 0 — — 0 0
DOM Elements 254 — — 254 254
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 47 — — 47 47
A11y Failures 5 — — 5 5
A11y Failing Nodes 40 — — 40 40

Main thread work

other 133 ms
style layout 92 ms
script evaluation 88 ms
parse HTML 24 ms
paint composite render 20 ms
script parse compile 16 ms

Axe violations axe-core 4.13.0, full rule set

47 violating nodes across 7 rules, 348 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 23 nodes
  • serious link-name — Links must have discernible text 14 nodes
  • moderate region — All page content should be contained by landmarks 6 nodes
  • serious html-has-lang — <html> element must have a lang attribute 1 node
  • moderate landmark-one-main — Document should have one main landmark 1 node
  • moderate meta-viewport — Zooming and scaling must not be disabled 1 node
  • moderate page-has-heading-one — Page should contain a level-one heading 1 node

Accessibility failures 5 of 14 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. 23 nodes
  • link-name — Links do not have a discernible name 14 nodes
  • html-has-lang — `<html>` element does not have a `[lang]` attribute 1 node
  • meta-viewport — `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. 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 3 console errors

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, 9:29 PM UTC 76 5.39 s 0.036 0 ms 698.2 kB 3/3 ±1 2,480 25.4s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show eleventy-html5up-txt.appseed.us'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://eleventy-html5up-txt.appseed.us/"></speedlify-score>