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 ·

petrzalka.info

https://www.petrzalka.info/

77 100 100 92 –CWV 2AXE

Data from Aug 21, 2026, 1:48 PM UTC — 5h old.

11ty Emeritus · 1 measurement · since Aug 21, 2026 · last attempt 5h

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.

WordPress 7.1 Built with WordPress 7.1
Op Hosted by Self-hosted

Scores

77
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 3.68 s — — 3.68 s 3.68 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 3.68 s — — 3.68 s 3.68 s
Speed Index 6.20 s — — 6.20 s 6.20 s
TTFB Time to First Byte 1.12 s — — 1.12 s 1.12 s

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 1.12 s
element render delay 488 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 5.28 MB — — 5.28 MB 5.28 MB
Requests 53 — — 53 53
Third-party Weight 350.0 kB — — 350.0 kB 350.0 kB
Third-party CPU 12 ms — — 12 ms 12 ms
Unused JS 27.5 kB — — 27.5 kB 27.5 kB
Unused CSS 302.0 kB — — 302.0 kB 302.0 kB

By resource type

other 2.41 MB · 2 req
image 2.21 MB · 14 req
document 338.1 kB · 2 req
script 128.0 kB · 13 req
font 62.0 kB · 2 req
stylesheet 24.8 kB · 13 req
third party 350.0 kB · 18 req

Third parties 3 entities

350.0 kB transferred, 12 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Esri ArcGIS 236.7 kB · 0 ms CPU
Google Fonts 66.4 kB · 0 ms CPU
Unpkg 46.9 kB · 12 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 1.18 s — — 1.18 s 1.18 s
Long Tasks 1 — — 1 1
DOM Elements 45 — — 45 45
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 2 — — 2 2
A11y Failures 0 — — 0 0
A11y Failing Nodes 0 — — 0 0

Main thread work

other 651 ms
script evaluation 234 ms
style layout 123 ms
parse HTML 95 ms
script parse compile 48 ms
paint composite render 33 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 292 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.

  • critical label — Form elements must have labels 1 node
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 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, 1:48 PM UTC 77 3.68 s 0.001 0 ms 5.28 MB 3/3 ±18 2,465 47.6s

Embed this score

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