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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

2018.nejsconf.com

https://2018.nejsconf.com/

76PERF 98A11Y 100BEST 100SEO ✗AXE –CWV

Ranks Overall #1,364 Built Awesome #930

Data from Oct 2, 2026, 12:34 AM UTC old Measured once a week · 7 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).

Stack

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Lighthouse Scores LAB Simulated

76
Performance
no change
98
Accessibility
no change
100
Best Practices
no change
100
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 7.69 s poor ↑ +176 ms (+2.3%) 7.47 s – 7.78 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.010 good → no change 0.010 – 0.010
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 826 ms good ↑ +18 ms (+2.2%) 808 ms – 989 ms
Speed Index 908 ms good ↑ +100 ms (+12.4%) 808 ms – 1.74 s
TTFB Time to First Byte 636 ms good ↑ +26 ms (+4.3%) 604 ms – 769 ms

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.

time to first byte 307 ms
resource load duration 83 ms
element render delay 28 ms
resource load delay 8 ms

Page weight

Metric Value Change / range Trend
Page Weight 1.57 MB ↓ -342 B 1.57 MB – 1.58 MB
Requests 28 → no change 28 – 29
Third-party Weight 84.6 kB ↓ -4 B 84.6 kB – 84.6 kB
Third-party CPU 1 ms ↓ -0 ms (-25%) 1 ms – 1 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 94.2% 1.48 MB 23
font 4.9% 77.4 kB 3
script 0.4% 7.0 kB 1
document 0.4% 6.6 kB 1
Total 1.57 MB 28

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Adobe TypeKit font 84.6 kB 1 ms
Total 84.6 kB 1 ms

Page health

Metric Value Change / range Trend
Main Thread Work 373 ms ↓ -37 ms (-9.1%) 373 ms – 515 ms
Long Tasks 0 → no change 0 – 1
DOM Elements 233 → no change 233 – 233
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 13 → no change 13 – 13
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

Task Time Share Duration Simulated
other 50% 186 ms
style layout 28% 104 ms
paint composite render 10% 38 ms
script evaluation 8% 31 ms
parse HTML 3% 11 ms
script parse compile 1% 3 ms
Total 373 ms

Axe violations axe-core 4.13.0, full rule set

13 violating nodes across 2 rules, 551 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 12 nodes
    Offending elements (5 of 12)
    1. body > .sg-c:nth-child(1) 
      <div class="sg-c">
    2. .sg-c:nth-child(2) 
      <div class="sg-c"> <div class="sg-component"> <div class="hero-quote-c"> <p class="hero-quote icon icon-moon">NEJS CONF is a single day, single track conference dedicated to Web Development and JavaS…
    3. .sg-c:nth-child(3) > .sg-component:nth-child(1) 
      <div class="sg-component">
    4. .sg-c:nth-child(3) > .sg-component:nth-child(2) 
      <div class="sg-component">
    5. .sg-component:nth-child(3) 
      <div class="sg-component">
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en" class="wf-effra-n4-active wf-effra-n9-active wf-effra-i9-active wf-active">

Accessibility failures 1 of 22 audits

  • landmark-one-main — Document does not have a main landmark. 1 node

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 2, 2026, 12:34 AM UTC 76 7.69 s 0.010 0 ms 1.57 MB 3/3 ±0 2,459 -1% 23.2s Wayback
Sep 25, 2026, 12:28 AM UTC 76 7.51 s 0.010 0 ms 1.57 MB 3/3 ±1 2,473 -1% 22.6s Wayback
Sep 17, 2026, 11:24 PM UTC 76 7.78 s 0.010 0 ms 1.58 MB 3/3 ±1 3,435 +38% 22.4s Wayback
Sep 10, 2026, 9:27 PM UTC 76 7.47 s 0.010 0 ms 1.58 MB 3/3 ±1 3,348 +35% 21.7s Wayback
Sep 3, 2026, 7:17 PM UTC 76 7.72 s 0.010 0 ms 1.57 MB 3/3 ±2 2,690 +8% 25.7s Wayback
Aug 27, 2026, 7:04 PM UTC 76 7.50 s 0.010 0 ms 1.57 MB 3/3 ±1 2,478 0% 22.8s Wayback
Aug 20, 2026, 4:24 PM UTC 76 7.68 s 0.010 0 ms 1.57 MB 3/3 ±1 2,486 0% 25.6s Wayback

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