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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.

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koboldthinktank.site

https://koboldthinktank.site/

99PERF 100A11Y 100BEST 100SEO !AXE ✓CWV

Ranks Overall #631 Built Awesome #474

Data from Oct 4, 2026, 4:31 AM UTC old Measured once a week · 7 runs since Aug 21, 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

Eleventy 2.0.1 Built with Eleventy 2.0.1
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

99
Performance
↑ +9 (+10%)
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-05 → 2026-10-02), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 1.52 s good ↓ -1353 ms (-47%) significant 1.52 s – 3.60 s 1.18 s good 98.1% 1.9% 0%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0.034 good → no change 0.032 – 0.034 0 good 94.7% 4.7% 0.5%
TBT Total Blocking Time 107 ms good ↑ +80 ms (+296.3%) significant 18 ms – 121 ms n/a —
FCP First Contentful Paint 1.52 s good ↓ -1353 ms (-47%) significant 797 ms – 2.88 s 1.05 s good 97.4% 2.1% 0.5%
Speed Index 1.52 s good ↓ -1353 ms (-47%) significant 797 ms – 2.88 s n/a —
TTFB Time to First Byte 603 ms good ↓ -1 ms (-0.2%) 603 ms – 649 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.

element render delay 35 ms
resource load delay 8 ms
resource load duration 6 ms
time to first byte 5 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.52 s
Field p75 1.18 s

The lab LCP is 1.3× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 321 kB ↑ +1.4 kB (+0.4%) 315 kB – 321 kB
Requests 12 → no change 12 – 12
Third-party Weight 291 kB ↑ +1.4 kB (+0.5%) 286 kB – 291 kB
Third-party CPU 61 ms ↑ +14 ms (+30.2%) significant 41 ms – 66 ms
Unused JS 74.2 kB ↑ +211 B (+0.3%) 71.1 kB – 74.2 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 54.1% 174 kB 3
font 35.3% 113 kB 2
image 8.9% 28.4 kB 5
document 1.4% 4.4 kB 1
stylesheet 0.3% 1.1 kB 1
Total 321 kB 12

Third parties 3 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 169 kB 54 ms
Google Fonts font 114 kB 0 ms
buymeacoffee.com 8.1 kB 7 ms
Total 291 kB 61 ms

Page health

Metric Value Change / range Trend
Main Thread Work 482 ms ↑ +100 ms (+26.2%) 365 ms – 559 ms
Long Tasks 2 → no change 2 – 2
DOM Elements 77 → no change 77 – 77
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 4 → no change 3 – 4
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
script evaluation 45% 218 ms
other 23% 113 ms
style layout 17% 80 ms
script parse compile 9% 44 ms
paint composite render 4% 17 ms
parse HTML 2% 10 ms
Total 482 ms

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 1 rule, 210 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 4 nodes
    Offending elements
    1. .mobileTitle 
      <div class="mobileTitle">Kobold Think Tank</div>
    2. .home-link 
      <a href="/" class="home-link" aria-label="Return to homepage"></a>
    3. #bmc-wbtn 
      <div id="bmc-wbtn" style="display: flex; align...">
    4. div:nth-child(9) 
      <div style="position: fixed; rig...">

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 1.11 s — 0 1.04 s —
2026-09-19 1.10 s — 0 984 ms 717 ms
2026-09-12 1.10 s — 0 1.00 s —
2026-09-05 1.11 s — 0 971 ms —
2026-08-29 1.12 s — 0 917 ms 705 ms
2026-08-22 1.28 s — 0 1.00 s 784 ms
2026-08-15 1.25 s — 0 933 ms 732 ms
2026-08-08 1.21 s — 0 959 ms 783 ms
2026-08-01 1.13 s — 0 933 ms 668 ms
2026-07-25 1.07 s 79 ms 0 869 ms 657 ms
2026-07-18 999 ms 80 ms 0 867 ms 657 ms
2026-07-11 999 ms 79 ms 0 851 ms 610 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 4, 2026, 4:31 AM UTC 99 1.52 s 0.034 107 ms 321 kB 3/3 ±12 2,492 0% 23.4s Wayback
Sep 27, 2026, 12:18 AM UTC 90 2.88 s 0.034 27 ms 319 kB 3/3 ±11 2,941 +18% 26.6s Wayback
Sep 19, 2026, 10:09 PM UTC 97 2.51 s 0.032 18 ms 318 kB 3/3 ±4 4,294 +73% 22.2s Wayback
Sep 12, 2026, 9:15 PM UTC 90 3.60 s 0.032 64 ms 318 kB 3/3 ±13 2,510 +1% 23.2s Wayback
Sep 5, 2026, 6:00 PM UTC 94 2.90 s 0.034 121 ms 317 kB 3/3 ±7 2,243 -10% 23.3s Wayback
Aug 29, 2026, 5:02 PM UTC 98 2.48 s 0.034 49 ms 317 kB 3/3 ±17 2,673 +8% 23.5s Wayback
Aug 21, 2026, 3:08 AM UTC 92 3.35 s 0.032 50 ms 315 kB 3/3 ±7 2,341 -6% 23.4s Wayback

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