speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time.

Charts Measurement runs Embed a score

nicolas-birckel.fr

https://www.nicolas-birckel.fr/

99 96 100 91 ✗AXE –CWV

Ranks Overall #1,114 Built Awesome #862

Data from Sep 7, 2026, 9:04 AM UTC old Measured once a week · 4 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Wayback Machine

Stack

Eleventy Built with Eleventy
Netlify Hosted by Netlify

Lighthouse Scores

99
Performance
↓ -1 (-1%)
96
Accessibility
no change
100
Best Practices
no change
91
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.93 s 815 ms ↑ +1119 ms (+137.3%) 815 ms 2.03 s
CLS Cumulative Layout Shift 0 0 → no change 0 0
TBT Total Blocking Time 76 ms 40 ms ↑ +36 ms (+90%) 40 ms 76 ms
FCP First Contentful Paint 1.05 s 815 ms ↑ +239 ms (+29.3%) 815 ms 1.05 s
Speed Index 1.05 s 815 ms ↑ +239 ms (+29.3%) 815 ms 1.05 s
TTFB Time to First Byte 604 ms 626 ms ↓ -22 ms (-3.5%) 604 ms 718 ms

LCP Subparts lab observed, unthrottled

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

element render delay 60 ms
time to first byte 7 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 95.4 kB 95.4 kB ↓ -49 B (-0.1%) 95.4 kB 95.7 kB
Requests 5 5 → no change 5 5
Third-party Weight 55.2 kB 55.1 kB ↑ +156 B (+0.3%) 55.1 kB 55.2 kB
Third-party CPU 30 ms 21 ms ↑ +9 ms (+43.3%) 21 ms 30 ms
Unused JS 0 B 0 B → no change 0 B 0 B
Unused CSS 21.3 kB 21.3 kB → no change 21.3 kB 21.3 kB

By resource type

  • script 58.9% 56.2 kB · 2 req
  • font 32.2% 30.7 kB · 1 req
  • document 6.1% 5.8 kB · 1 req
  • other 2.7% 2.6 kB · 1 req

Third parties 1 entities

55.2 kB transferred, 30 ms on the main thread.

Netlify script 55.2 kB · 30 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 320 ms 242 ms ↑ +78 ms (+32.3%) 242 ms 320 ms
Long Tasks 1 1 → no change 1 1
DOM Elements 95 95 → no change 95 95
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 6 6 → no change 6 7
A11y Failures 1 1 → no change 1 1
A11y Failing Nodes 6 6 → no change 6 6

Main thread work

script evaluation 98 ms
other 89 ms
style layout 76 ms
script parse compile 38 ms
parse HTML 14 ms
paint composite render 6 ms

Axe violations axe-core 4.13.0, full rule set

6 violating nodes across 1 rule, 219 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 6 nodes

Accessibility failures 1 of 23 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 6 nodes

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 7, 2026, 9:04 AM UTC 99 1.93 s 0 76 ms 95.4 kB 3/3 ±0 2,477 0% 21.1s Wayback
Aug 31, 2026, 3:59 AM UTC 100 815 ms 0 40 ms 95.4 kB 3/3 ±0 2,986 +20% 22s Wayback
Aug 21, 2026, 6:36 PM UTC 99 2.03 s 0 60 ms 95.7 kB 3/3 ±1 2,380 -4% 21.3s Wayback
Aug 21, 2026, 11:32 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 19.5s

Embed this score

Use this web component to show nicolas-birckel.fr's scores on any website, updated whenever this instance re-measures. 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.nicolas-birckel.fr/"></speedlify2-score>