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 ·

markus-haack.com

https://markus-haack.com/

99 100 100 100 ✓CWV 0AXE

Data from Aug 21, 2026, 3:12 AM UTC — 16h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 16h

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
Netlify Hosted by Netlify

Core Web Vitals field data, origin-level

Real Chrome users, 28-day window (2026-07-22 → 2026-08-18). This is what Google measures you on.

LCP 1.18 s good
INP — no data
CLS 0 good

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 1.66 s — — 1.66 s 1.66 s
CLS Cumulative Layout Shift 0 — — 0 0
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 1.66 s — — 1.66 s 1.66 s
Speed Index 1.66 s — — 1.66 s 1.66 s
TTFB Time to First Byte 623 ms — — 623 ms 623 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 101 ms
time to first byte 24 ms

Field data Chrome UX Report, origin-level

Real Chrome users, 28-day trailing window (2026-07-22 → 2026-08-18). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 1.18 s good 99% good
CLS CWV 0 good 97.6% good
FCP 961 ms good 97% good
TTFB 627 ms good 90.3% good

Lab vs field

Lab LCP 1.66 s · field p75 1.18 s · real users are 0.71× faster than the lab.

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-08-15 1.23 s — 0 977 ms 644 ms
2026-08-08 1.21 s — 0 958 ms 629 ms
2026-08-01 1.23 s — 0 952 ms 598 ms
2026-07-25 1.19 s — 0 961 ms 567 ms
2026-07-18 1.18 s — 0 942 ms 552 ms
2026-07-11 1.18 s — 0 974 ms 569 ms
2026-07-04 1.18 s — 0 1.01 s 552 ms
2026-06-27 1.18 s — 0 1.04 s 614 ms
2026-06-20 1.17 s — 0 1.01 s 614 ms
2026-06-13 1.13 s — 0 996 ms 616 ms
2026-06-06 1.12 s — 0 976 ms 601 ms
2026-05-30 1.15 s — 0 925 ms 595 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 225.3 kB — — 225.3 kB 225.3 kB
Requests 15 — — 15 15
Third-party Weight 4.5 kB — — 4.5 kB 4.5 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

image 143.9 kB · 4 req
font 47.1 kB · 2 req
stylesheet 9.9 kB · 1 req
script 8.5 kB · 3 req
other 8.1 kB · 4 req
document 7.7 kB · 1 req
third party 4.5 kB · 2 req

Third parties 1 entities

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

markus-haack.org 4.5 kB · 3 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 265 ms — — 265 ms 265 ms
Long Tasks 0 — — 0 0
DOM Elements 217 — — 217 217
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 125 ms
style layout 68 ms
script evaluation 34 ms
parse HTML 19 ms
paint composite render 16 ms
script parse compile 3 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 474 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

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, 3:12 AM UTC 99 1.66 s 0 0 ms 225.3 kB 3/3 ±4 2,325 25.6s

Embed this score

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