speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

Charts Compare Measurement runs Embed a score Open to Work

kromatic.fr

https://kromatic.fr/

57PERF 96A11Y 100BEST 92SEO !AXE –CWV

Ranks Overall #1,046 11ty Emeritus

Data from Sep 14, 2026, 9:32 PM UTC old Measured once a month · 5 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

WordPress 7.1 Built with WordPress 7.1
o2 Hosted by o2switch-PowerBoost-v3

Lighthouse Scores LAB Simulated

57
Performance
↓ -20 (-26%)
96
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 4.47 s poor ↑ +89 ms (+2%) 4.38 s – 4.52 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 800 ms poor ↑ +800 ms 0 ms – 800 ms
FCP First Contentful Paint 2.92 s needs work ↑ +15 ms (+0.5%) 2.89 s – 2.92 s
Speed Index 4.84 s needs work ↑ +173 ms (+3.7%) 4.67 s – 4.84 s
TTFB Time to First Byte 722 ms good ↓ -61 ms (-7.8%) significant 722 ms – 783 ms

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 2.16 s
time to first byte 270 ms

Page weight

Metric Value Change / range Trend
Page Weight 578 kB ↓ -23 B 578 kB – 578 kB
Requests 31 → no change 31 – 31
Third-party Weight 44.0 kB → no change 44.0 kB – 44.0 kB
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 30.0 kB → no change 30.0 kB – 30.0 kB

By resource type

Type Transfer Share Size Requests
image 69.2% 400 kB 11
document 8.7% 50.6 kB 1
stylesheet 7.5% 43.5 kB 8
font 7.5% 43.2 kB 1
script 6.2% 35.8 kB 8
other 0.9% 5.2 kB 1
Total 578 kB 31

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Google Fonts font 44.0 kB 0 ms
Total 44.0 kB 0 ms

Page health

Metric Value Change / range Trend
Main Thread Work 3.02 s ↑ +1446 ms (+91.9%) significant 1.57 s – 3.02 s
Long Tasks 3 → no change 3 – 3
DOM Elements 1,056 → no change 1,056 – 1,056
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 3 → no change 3 – 7
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 3 → no change 3 – 3

Main thread work

Task Time Share Duration Simulated
other 83% 2.51 s
style layout 11% 342 ms
script evaluation 2% 69 ms
parse HTML 2% 61 ms
paint composite render 1% 20 ms
script parse compile 1% 15 ms
Total 3.02 s

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 1 rule, 866 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 3 nodes

Accessibility failures 1 of 22 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 3 nodes

SEO failures 1 of 9 audits

  • meta-description — Document does not have a meta description

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 14, 2026, 9:32 PM UTC 57 4.47 s 0 800 ms 578 kB 3/3 ±37 2,334 -6% 40.3s Wayback
Sep 7, 2026, 7:00 PM UTC 77 4.38 s 0 0 ms 578 kB 3/3 ±17 2,451 -1% 39.6s Wayback
Aug 31, 2026, 5:54 PM UTC 74 4.52 s 0 172 ms 578 kB 3/3 ±18 2,480 0% 38.5s Wayback
Aug 24, 2026, 2:40 PM UTC 74 4.52 s 0 178 ms 578 kB 3/3 ±18 2,504 +1% 40.3s Wayback
Aug 21, 2026, 3:04 AM UTC 75 4.52 s 0 158 ms 578 kB 3/3 ±7 2,486 0% 36.6s Wayback