Check of ciunkos.com/email-list-validator

Nov 15, 2026, 11:55 · daily

Lighthouse 13.5 (mobile, simulated throttling), median of three runs. Scores 0–100: 90 and up green, 50–89 orange, below 50 red; a dash means the category was not measured in that check.

TBT is the lab stand-in for INP, which needs real interactions.

Performance
100good±0 vs previous±0 vs 7-day median
LCP
917 msgood+2 ms vs previous+3 ms vs 7-day median
CLS
0good±0 vs previous±0 vs 7-day median
TBT
0 msgood±0 vs previous±0 vs 7-day median
FCP
917 msgood+2 ms vs previous+3 ms vs 7-day median
TTFB
14 msgood−57 ms vs previous−29 ms vs 7-day median

No slowdown against the previous check and the 7-day median.

First screen: https://ciunkos.com/email-list-validator
First screen
LCP element
main#main > section.hero > div.wrap > p.lead List Desk is a free email list validator by Przemysław Zalewski, an independent…
Page weight
33 KB
Long tasks
1
Conditions
Lighthouse 13.5.0, mobile (Moto G Power emulation, 412×823), simulated throttling (150 ms RTT, 1.6 Mbps, CPU 4×), median of 3 runs, benchmarkIndex 2791

Loads

LoadPerfLCPFCPTBTCLSTTFB
1100922 ms922 ms0 ms0153 ms
2100917 ms917 ms0 ms014 ms
3100914 ms914 ms0 ms011 ms

What failed

Performance 100

Accessibility 100

Nothing failed in this category.

Best Practices 100

Nothing failed in this category.

SEO 100

Nothing failed in this category.

Google PageSpeed Insights: Comparison details

Vitals Desk is the primary measurement. Google adds one mobile lab run from its servers. This comparison does not change our scores, history or slowdown emails.

The measured values have no substantial differences.

The Lighthouse versions differ; scores and checks may not be directly comparable.

Different locations, hardware, Lighthouse versions and a single run versus our three-run median can produce different results. These are comparison notes, not regression alerts.

Google PageSpeed Insights
MetricVitals DeskGoogleGoogle minus Vitals Desk
Performance10099−1
Accessibility100100±0
Best Practices100100±0
SEO100100±0
LCP917 ms922 ms+5 ms
CLS00±0
TBT0 ms70 ms+70 ms
FCP917 ms922 ms+5 ms
TTFB14 ms5 ms−9 ms
Lighthouse version
13.6.0
Google checked at
Nov 15, 2026, 11:55
Google’s final URL
https://ciunkos.com/email-list-validator

Additional failed checks in Google’s sample

These appear in Google’s saved sample but not in our saved list. Each source keeps a limited list.

  • Legacy JavaScript legacy-javascript-insight (Performance)
  • Reduce unused JavaScript unused-javascript (Performance)

Open PageSpeed Insights