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 ·

sketchnotes.sixtwothree.org

https://sketchnotes.sixtwothree.org/

99 100 92 91 –CWV 0AXE

Data from Aug 21, 2026, 7:45 AM UTC — 11h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 11h

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
92
Best Practices
no change
91
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 — — 0 0
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 622 ms — — 622 ms 622 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.

element render delay 56 ms
time to first byte 16 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 9.6 kB — — 9.6 kB 9.6 kB
Requests 6 — — 6 6
Third-party Weight 0 B — — 0 B 0 B
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

document 3.6 kB · 1 req
other 937 B · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 81 ms — — 81 ms 81 ms
Long Tasks 0 — — 0 0
DOM Elements 192 — — 192 192
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 46 ms
style layout 16 ms
paint composite render 7 ms
script evaluation 6 ms
parse HTML 5 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 392 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 h2 1 console error

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, 7:45 AM UTC 99 1.55 s 0 0 ms 9.6 kB 3/3 ±0 4,104 19.7s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show sketchnotes.sixtwothree.org'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://sketchnotes.sixtwothree.org/"></speedlify-score>