speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

Charts Compare Measurement runs Embed a score Open to Work

jak2k.eu

https://jak2k.eu/

100PERF 86A11Y 100BEST 92SEO !AXE –CWV

Ranks Overall #939 Built Awesome #678

Data from Oct 6, 2026, 10:54 PM UTC old Measured once a week · 16 runs since Aug 20, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Lighthouse Scores LAB Simulated

100
Performance
↑ +9 (+9.9%)
86
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 897 ms good ↑ +14 ms (+1.6%) 883 ms – 1.12 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good ↓ -0.199 (-100%) significant 0 – 0.199
TBT Total Blocking Time 0 ms good → no change 0 ms – 267 ms
FCP First Contentful Paint 897 ms good ↑ +14 ms (+1.6%) 810 ms – 1.00 s
Speed Index 897 ms good ↑ +14 ms (+1.6%) 883 ms – 2.65 s
TTFB Time to First Byte 737 ms good ↑ +14 ms (+1.9%) 711 ms – 1.36 s

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 180 ms
time to first byte 138 ms

Page weight

Metric Value Change / range Trend
Page Weight 13.3 kB ↑ +23 B (+0.2%) 13.2 kB – 45.8 kB
Requests 6 → no change 6 – 23
Third-party Weight 0 B → no change 0 B – 0 B
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
image 62.5% 6.3 kB 1
document 27.9% 2.8 kB 1
stylesheet 6.3% 634 B 1
script 3.3% 332 B 1
Total 13.3 kB 6

Page health

Metric Value Change / range Trend
Main Thread Work 154 ms ↑ +25 ms (+19.3%) 129 ms – 935 ms
Long Tasks 0 → no change 0 – 6
DOM Elements 31 → no change 31 – 272
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 → no change 2 – 2
A11y Failures 2 → no change 0 – 2
A11y Failing Nodes 2 → no change 0 – 2

Main thread work

Task Time Share Duration Simulated
other 59% 91 ms
script evaluation 23% 36 ms
style layout 12% 18 ms
paint composite render 3% 5 ms
parse HTML 2% 3 ms
script parse compile 1% 1 ms
Total 154 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 85 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 2 of 14 audits

  • frame-title — `<frame>` or `<iframe>` elements do not have a title 1 node
  • html-has-lang — `<html>` element does not have a `[lang]` attribute 1 node

SEO failures 1 of 9 audits

  • robots-txt — robots.txt is not valid 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 6, 2026, 10:54 PM UTC 100 897 ms 0 0 ms 13.3 kB 3/3 ±4 2,689 +8% 28s Wayback
Sep 29, 2026, 9:54 PM UTC 91 883 ms 0.199 0 ms 13.2 kB 3/3 ±14 4,225 +70% 29.8s Wayback
Sep 22, 2026, 6:31 PM UTC 100 892 ms 0 23 ms 13.6 kB 3/3 ±0 2,679 +8% 27.4s Wayback
Sep 15, 2026, 4:20 PM UTC 95 1.12 s 0 267 ms 13.6 kB 3/3 ±9 2,088 -16% 27s Wayback
Sep 8, 2026, 2:54 PM UTC 100 918 ms 0 0 ms 13.3 kB 3/3 ±7 2,432 -2% 30.6s Wayback
Sep 1, 2026, 1:12 PM UTC 100 1.11 s 0.014 63 ms 45.8 kB 3/3 ±0 2,489 0% 28.9s Wayback
Aug 31, 2026, 10:50 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 23.3s
Aug 26, 2026, 12:54 PM UTC lighthouse timed out after 120000ms 279s
Aug 25, 2026, 9:38 AM UTC lighthouse timed out after 120000ms 281s
Aug 24, 2026, 5:41 AM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 20.4s
Aug 23, 2026, 5:33 AM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 21.2s
Aug 22, 2026, 12:40 PM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 19.7s
Aug 22, 2026, 3:45 AM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 21s
Aug 21, 2026, 9:29 PM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 20.4s
Aug 21, 2026, 2:42 PM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 20.7s
Aug 20, 2026, 11:31 PM UTC CHROME_INTERSTITIAL_ERROR: Chrome prevented page load with an interstitial. Make sure you are testing the correct URL and that the server is properly responding to all requests. 20.8s

Embed this score

Use this web component to show jak2k.eu's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://jak2k.eu/"></speedlify2-score>