speedlify2

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

Measurement runs · Embed a score ·

chris-snowden.me

https://www.chris-snowden.me/

100 96 92 100 4AXE –CWV

Data from Aug 21, 2026, 11:30 AM UTC 2d old

Built Awesome #545 · 1 measurement · since Aug 21, 2026

Scores

100
Performance
no change
96
Accessibility
no change
92
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.21 s — — 1.21 s 1.21 s
CLS Cumulative Layout Shift 0.011 — — 0.011 0.011
TBT Total Blocking Time 15 ms — — 15 ms 15 ms
FCP First Contentful Paint 1.21 s — — 1.21 s 1.21 s
Speed Index 1.21 s — — 1.21 s 1.21 s
TTFB Time to First Byte 613 ms — — 613 ms 613 ms

What LCP is made of observed, unthrottled

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

Measured on the trace before throttling is modelled, so these are real durations that will not sum to the 1.21 s above — that figure is a simulation of the same load on a slow phone and connection. Read these for the proportions: which phase dominates.

element render delay 39 ms
time to first byte 15 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 256 kB — — 256 kB 256 kB
Requests 11 — — 11 11
Third-party Weight 0 B — — 0 B 0 B
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 96.2 kB — — 96.2 kB 96.2 kB
Unused CSS 19.9 kB — — 19.9 kB 19.9 kB

By resource type

script 140 kB · 1 req
font 59.1 kB · 2 req
document 26.1 kB · 1 req
other 24.9 kB · 3 req
image 684 B · 2 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 273 ms — — 273 ms 273 ms
Long Tasks 1 — — 1 1
DOM Elements 53 — — 53 53
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 4 — — 4 4
A11y Failures 1 — — 1 1
A11y Failing Nodes 1 — — 1 1

Main thread work

other 100 ms
script parse compile 73 ms
script evaluation 38 ms
style layout 31 ms
parse HTML 21 ms
paint composite render 9 ms

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 3 rules, 51 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.

  • moderate region — All page content should be contained by landmarks 2 nodes
  • moderate landmark-one-main — Document should have one main landmark 1 node
  • moderate page-has-heading-one — Page should contain a level-one heading 1 node

Accessibility failures 1 of 12 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

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

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, 11:30 AM UTC 100 1.21 s 0.011 15 ms 256 kB 3/3 ±0 2,468 21.4s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show chris-snowden.me's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://www.chris-snowden.me/"></speedlify2-score>