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 ·

energieswitch.nl

https://energieswitch.nl/

94 100 100 100 CWV 0AXE

Data from Aug 20, 2026, 10:28 PM UTC — 20h old.

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

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
Self-hosted · nginx Hosted by Self-hosted

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-19 → 2026-08-15). From the backfilled CrUX history rather than this measurement, which predates the API key. This is what Google measures you on.

LCP no data
INP no data
CLS no data

Scores

94
Performance
no change
100
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 2.51 s 2.51 s 2.51 s
CLS Cumulative Layout Shift 0.001 0.001 0.001
TBT Total Blocking Time 0 ms 0 ms 0 ms
FCP First Contentful Paint 2.51 s 2.51 s 2.51 s
Speed Index 2.51 s 2.51 s 2.51 s
TTFB Time to First Byte 684 ms 684 ms 684 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 147 ms
time to first byte 86 ms

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-08-15
2026-08-08
2026-08-01
2026-07-25
2026-07-18
2026-07-11
2026-07-04
2026-06-27
2026-06-20
2026-06-13
2026-06-06
2026-05-30

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 134.5 kB 134.5 kB 134.5 kB
Requests 17 17 17
Third-party Weight 42.6 kB 42.6 kB 42.6 kB
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

image 43.9 kB · 8 req
font 41.8 kB · 2 req
stylesheet 18.1 kB · 2 req
script 15.1 kB · 2 req
document 10.5 kB · 1 req
other 1.9 kB · 1 req
third party 42.6 kB · 3 req

Third parties 1 entities

42.6 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 42.6 kB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 396 ms 396 ms 396 ms
Long Tasks 1 1 1
DOM Elements 455 455 455
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 0 0 0
A11y Failures 0 0 0
A11y Failing Nodes 0 0 0

Main thread work

other 168 ms
style layout 134 ms
paint composite render 39 ms
script evaluation 25 ms
parse HTML 21 ms
script parse compile 9 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 909 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.

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, 10:28 PM UTC 94 2.51 s 0.001 0 ms 134.5 kB 3/3 ±2 2,359 24.5s

Embed this score

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