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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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tufte.000000076.xyz

https://tufte.000000076.xyz/

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

Ranks Overall #246 Build Awesome Starters #34

Data from Oct 5, 2026, 1:39 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 3.1.6 Built with Eleventy 3.1.6
Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

99
Performance
no change
100
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 1.68 s good ↑ +125 ms (+8%) significant 1.55 s – 1.68 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.016 good → no change 0.016 – 0.016
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.53 s good ↓ -25 ms (-1.6%) 1.52 s – 1.56 s
Speed Index 1.53 s good ↓ -25 ms (-1.6%) 1.52 s – 1.56 s
TTFB Time to First Byte 465 ms good ↓ -20 ms (-4.1%) 463 ms – 487 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 48 ms
time to first byte 29 ms

Page weight

Metric Value Change / range Trend
Page Weight 158 kB ↑ +11 B 157 kB – 159 kB
Requests 11 → no change 11 – 11
Third-party Weight 10.2 kB → no change 9.6 kB – 11.5 kB
Third-party CPU 5 ms ↑ +2 ms (+79.3%) significant 3 ms – 5 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
font 85.5% 135 kB 3
script 8.5% 13.4 kB 2
document 3.8% 6.0 kB 1
other 1.1% 1.8 kB 3
stylesheet 0.5% 823 B 1
image 0.5% 799 B 1
Total 158 kB 11

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Cloudflare script 10.2 kB 5 ms
Total 10.2 kB 5 ms

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

Scripts disabled
As rendered

99.2% of pixels differ — they have almost nothing in common. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric Value Change / range Trend
Main Thread Work 414 ms ↑ +109 ms (+35.9%) significant 285 ms – 414 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 64 → no change 64 – 64
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
style layout 42% 175 ms
other 33% 135 ms
script evaluation 14% 60 ms
paint composite render 8% 34 ms
parse HTML 2% 9 ms
script parse compile 0% 1 ms
Total 414 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 126 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 5, 2026, 1:39 AM UTC 99 1.68 s 0.016 0 ms 158 kB 3/3 ±0 2,417 -3% 21.6s Wayback
Sep 27, 2026, 11:42 PM UTC 99 1.55 s 0.016 0 ms 158 kB 3/3 ±23 3,411 +37% 22.1s Wayback
Sep 20, 2026, 8:42 PM UTC 99 1.56 s 0.016 0 ms 158 kB 3/3 ±20 2,360 -5% 27.3s Wayback
Sep 13, 2026, 8:22 PM UTC 99 1.68 s 0.016 0 ms 158 kB 3/3 ±8 2,297 -8% 22.6s Wayback
Sep 6, 2026, 4:45 PM UTC 99 1.67 s 0.016 0 ms 158 kB 3/3 ±16 2,510 +1% 24.5s Wayback
Aug 30, 2026, 1:47 PM UTC 99 1.67 s 0.016 0 ms 157 kB 3/3 ±0 2,479 0% 20.9s Wayback
Aug 21, 2026, 4:48 PM UTC 99 1.55 s 0.016 0 ms 159 kB 3/3 ±19 3,029 +22% 21.6s Wayback

Embed this score

Use this web component to show tufte.000000076.xyz'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://tufte.000000076.xyz/"></speedlify2-score>