speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time.

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

tufte.000000076.xyz

https://tufte.000000076.xyz/

99 100 100 100 –CWV 0AXE

Data from Aug 21, 2026, 4:48 PM UTC — 2h old.

Build Awesome Starters · 1 measurement · since Aug 21, 2026 · last attempt 2h

Stack

Detected on the same page load as the accessibility pass — the generator from <meta name="generator"> or the shape of the page, the host from response headers.

Eleventy 3.1.6 Built with Eleventy 3.1.6
Cloudflare Hosted by Cloudflare

Scores

99
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.55 s — — 1.55 s 1.55 s
CLS Cumulative Layout Shift 0.016 — — 0.016 0.016
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 1.55 s — — 1.55 s 1.55 s
Speed Index 1.55 s — — 1.55 s 1.55 s
TTFB Time to First Byte 487 ms — — 487 ms 487 ms

What LCP is made of

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

time to first byte 69 ms
element render delay 36 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 158.9 kB — — 158.9 kB 158.9 kB
Requests 11 — — 11 11
Third-party Weight 11.5 kB — — 11.5 kB 11.5 kB
Third-party CPU 3 ms — — 3 ms 3 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

font 134.9 kB · 3 req
script 14.7 kB · 2 req
document 6.0 kB · 1 req
other 1.8 kB · 3 req
stylesheet 826 B · 1 req
image 793 B · 1 req
third party 11.5 kB · 1 req

Third parties 1 entities

11.5 kB transferred, 3 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Cloudflare 11.5 kB · 3 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 285 ms — — 285 ms 285 ms
Long Tasks 0 — — 0 0
DOM Elements 64 — — 64 64
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 0 — — 0 0
A11y Failures 0 — — 0 0
A11y Failing Nodes 0 — — 0 0

Main thread work

other 117 ms
style layout 102 ms
script evaluation 34 ms
paint composite render 24 ms
parse HTML 7 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 131 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 21, 2026, 4:48 PM UTC 99 1.55 s 0.016 0 ms 158.9 kB 3/3 ±19 3,029 21.6s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show tufte.000000076.xyz's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify-score.js component code into your site! 

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://tufte.000000076.xyz/"></speedlify-score>