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

manifesteren.nl

https://manifesteren.nl/

99 100 96 100 ✓AXE –CWV

Ranks Overall #344 Built Awesome #278

Data from Sep 12, 2026, 11:46 PM UTC old Measured once a week · 4 runs since Aug 21, 2026

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

Build Awesome 4.0.0 Built with Build Awesome 4.0.0
Li Hosted by Self-hosted

Lighthouse Scores LAB Simulated

99
Performance
↑ +1 (+1%)
100
Accessibility
no change
96
Best Practices
no change
100
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 1.75 s good ↓ -178 ms (-9.2%) significant 1.75 s – 1.94 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 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.75 s good ↑ +4 ms (+0.2%) 1.70 s – 1.77 s
Speed Index 1.75 s good ↓ -841 ms (-32.4%) significant 1.75 s – 2.59 s
TTFB Time to First Byte 752 ms good ↓ -9 ms (-1.2%) 716 ms – 762 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.

resource load duration 186 ms
time to first byte 142 ms
element render delay 23 ms
resource load delay 9 ms

Page weight

Metric Value Change / range Trend
Page Weight 275 kB ↑ +5 B 275 kB – 275 kB
Requests 16 → no change 16 – 16
Third-party Weight 3.8 kB ↑ +5 B (+0.1%) 3.8 kB – 3.8 kB
Third-party CPU 1 ms ↓ -0 ms (-25%) 1 ms – 1 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
image 85.4% 233 kB 8
script 9.6% 26.3 kB 2
document 2.1% 5.8 kB 1
stylesheet 2% 5.6 kB 1
other 0.8% 2.1 kB 3
Total 275 kB 16

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Plausible script 3.8 kB 1 ms
Total 3.8 kB 1 ms

Page health

Metric Value Change / range Trend
Main Thread Work 218 ms ↓ -44 ms (-16.7%) 186 ms – 261 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 140 → no change 140 – 140
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 59% 128 ms
style layout 12% 26 ms
paint composite render 11% 25 ms
script evaluation 11% 23 ms
script parse compile 4% 8 ms
parse HTML 4% 8 ms
Total 218 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 217 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Best Practices failures 1 of 19 audits

  • image-size-responsive — Serves images with low resolution 1 item

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 12, 2026, 11:46 PM UTC 99 1.75 s 0 0 ms 275 kB 3/3 ±2 2,897 +17% 26.8s Wayback
Sep 5, 2026, 8:05 PM UTC 98 1.93 s 0 0 ms 275 kB 3/3 ±1 2,488 0% 28.5s Wayback
Aug 29, 2026, 7:43 PM UTC 99 1.85 s 0 0 ms 275 kB 3/3 ±0 3,036 +22% 25.8s Wayback
Aug 21, 2026, 3:12 AM UTC 98 1.94 s 0 0 ms 275 kB 3/3 ±2 2,483 0% 28.5s Wayback

Embed this score

Use this web component to show manifesteren.nl'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://manifesteren.nl/"></speedlify2-score>