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 ·

ulf.codes

https://ulf.codes/

Data from Aug 21, 2026, 8:41 AM UTC — 9h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 9h

This URL redirects to https://ulfschneider.io/.

Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. Not yet confirmed as a move; it needs to lead to the same place on several consecutive runs first.

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.

Netlify Hosted by Netlify

Scores

99
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.58 s — — 1.58 s 1.58 s
CLS Cumulative Layout Shift 0 — — 0 0
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 1.58 s — — 1.58 s 1.58 s
Speed Index 1.58 s — — 1.58 s 1.58 s

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 67 ms
time to first byte 51 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 98 B — — 98 B 98 B
Requests 13 — — 13 13
Third-party Weight 80.0 kB — — 80.0 kB 80.0 kB
Third-party CPU 8 ms — — 8 ms 8 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

other 98 B · 3 req
third party 98 B · 1 req

Third parties 1 entities

80.0 kB transferred, 8 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

ulfschneider.io 80.0 kB · 8 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 192 ms — — 192 ms 192 ms
Long Tasks 0 — — 0 0
DOM Elements 220 — — 220 220
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 1 — — 1 1
A11y Failures 0 — — 0 0
A11y Failing Nodes 0 — — 0 0

Main thread work

other 104 ms
style layout 34 ms
script evaluation 23 ms
parse HTML 14 ms
script parse compile 9 ms
paint composite render 9 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 348 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 landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 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

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, 8:41 AM UTC 99 1.58 s 0 0 ms 98 B 3/3 ±4 2,830 22.4s

Embed this score

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