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

preview.tabler.io

https://preview.tabler.io/

44PERF 92A11Y 96BEST 100SEO ✗AXE ✗CWV

Ranks Overall #1,795 Built Awesome #1,116

Data from Oct 4, 2026, 7:12 PM UTC old Measured once a week · 7 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

Vercel Hosted by Vercel

Lighthouse Scores LAB Simulated

44
Performance
↓ -24 (-35.3%)
92
Accessibility
no change
96
Best Practices
↓ -4 (-4%)
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: failing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-05 → 2026-10-02), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 10.41 s poor ↑ +4039 ms (+63.3%) significant 6.00 s – 10.41 s 1.53 s good 84.6% 8.6% 6.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 4.00 s poor 52% 8% 40%
CLS CWV Cumulative Layout Shift 0 good ↓ -0.059 (-100%) significant 0 – 0.059 0 good 99.5% 0.2% 0.2%
TBT Total Blocking Time 934 ms poor ↑ +619 ms (+196.5%) significant 264 ms – 934 ms n/a —
FCP First Contentful Paint 2.76 s needs work ↑ +906 ms (+48.9%) 1.85 s – 4.29 s 1.39 s good 83.1% 9.5% 7.4%
Speed Index 6.13 s poor ↑ +2697 ms (+78.6%) significant 3.43 s – 6.13 s n/a —
TTFB Time to First Byte 471 ms good ↓ -181 ms (-27.8%) significant 471 ms – 652 ms 448 ms good 89.1% 7.7% 3.2%

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 1.40 s
time to first byte 138 ms

LCP LAB Simulated vs LCP FIELD

Lab 10.41 s
Field p75 1.53 s

The lab LCP is 6.81× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 1.42 MB ↑ +153.0 kB (+12.4%) significant 1.24 MB – 1.42 MB
Requests 146 ↑ +7 (+5%) significant 130 – 146
Third-party Weight 0 B → no change 0 B – 467 kB
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 269 kB ↑ +79.9 kB (+43.6%) significant 140 kB – 269 kB
Unused CSS 73.1 kB ↑ +15 B 64.6 kB – 84.9 kB

By resource type

Type Transfer Share Size Requests
image 47.1% 664 kB 115
script 39.4% 555 kB 13
stylesheet 7.9% 112 kB 9
document 5.5% 78.0 kB 1
other 0.1% 1.2 kB 3
Total 1.42 MB 146

Page health

Metric Value Change / range Trend
Main Thread Work 5.77 s ↑ +2178 ms (+60.7%) significant 2.87 s – 5.77 s
Long Tasks 12 ↑ +7 (+140%) significant 4 – 12
DOM Elements 3,911 ↓ -4 (-0.1%) 3,293 – 4,050
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 12 ↓ -2 (-14.3%) 12 – 154
A11y Failures 5 → no change 5 – 7
A11y Failing Nodes 12 → no change 12 – 17

Main thread work

Task Time Share Duration Simulated
script evaluation 35% 2.02 s
other 28% 1.59 s
style layout 22% 1.29 s
paint composite render 9% 543 ms
parse HTML 3% 165 ms
script parse compile 3% 150 ms
Total 5.77 s

Axe violations axe-core 4.13.0, full rule set

12 violating nodes across 5 rules, 3275 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 7 nodes
    Offending elements (5 of 7)
    1. .col-lg-3.col-sm-6:nth-child(2) > .card > .card-body > .align-items-baseline.d-flex > .me-auto > .text-green.d-inline-flex.lh-1 
      <span class="text-green d-inline-flex align-items-center lh-1">
    2. .ms-auto > .text-green.d-inline-flex.lh-1 
      <span class="text-green d-inline-flex align-items-center lh-1">
    3. .col-lg-3.col-sm-6:nth-child(5) > .card > .card-body > .align-items-baseline.d-flex > .me-auto > .text-green.d-inline-flex.lh-1 
      <span class="text-green d-inline-flex align-items-center lh-1">
    4. .col-lg-3.col-sm-6:nth-child(7) > .card > .card-body > .align-items-baseline.d-flex > .me-auto > .text-green.d-inline-flex.lh-1 
      <span class="text-green d-inline-flex align-items-center lh-1">
    5. .table-selectable > tbody > tr:nth-child(1) > .text-nowrap:nth-child(3) 
      <td class="text-nowrap text-secondary">
  • moderate region — All page content should be contained by landmarks 2 nodes
    Offending elements
    1. .g-2.align-items-center.row > .col 
      <div class="col"> <div class="page-pretitle">Overview</div> <h1 class="page-title">Dashboard</h1> </div>
    2. .d-sm-none 
      <a href="#" class="btn btn-primary d-sm-none btn-icon" data-bs-toggle="modal" data-bs-target="#modal-report" aria-label="Create new report">
  • minor empty-table-header — Table header text should not be empty 1 node
    Offending element
    1. th:nth-child(9) 
      <th></th>
  • moderate heading-order — Heading levels should only increase by one 1 node
    Offending element
    1. .h2 
      <h3 class="h2">Welcome back, Paweł</h3>
  • serious scrollable-region-focusable — Scrollable region must have keyboard access 1 node
    Offending element
    1. .card-body-scrollable 
      <div class="card-body card-body-scrollable">

Accessibility failures 5 of 32 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 7 nodes
  • td-has-header — `<td>` elements in a large `<table>` do not have table headers. 2 nodes
  • heading-order — Heading elements are not in a sequentially-descending order 1 node
  • target-size — Touch targets do not have sufficient size or spacing. 1 node
  • label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 1 node

Best Practices failures 2 of 19 audits

  • errors-in-console — Browser errors were logged to the console 3 items
  • valid-source-maps — Missing source maps for large first-party JavaScript 8 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3 3 console errors

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 1.39 s 2.92 s 0 1.40 s 422 ms
2026-09-19 1.44 s 699 ms 0 1.45 s 423 ms
2026-09-12 1.44 s 298 ms 0.010 1.39 s 496 ms
2026-09-05 1.41 s 206 ms 0.020 1.31 s 440 ms
2026-08-29 1.46 s 217 ms 0.030 1.30 s 423 ms
2026-08-22 1.40 s 190 ms 0.040 1.26 s 423 ms
2026-08-15 1.30 s 157 ms 0.040 1.17 s 422 ms
2026-08-08 1.40 s 163 ms 0.030 1.34 s 450 ms
2026-08-01 1.37 s 163 ms 0.010 1.33 s 488 ms
2026-07-25 1.45 s 169 ms 0 1.37 s 488 ms
2026-07-18 1.37 s 183 ms 0 1.33 s 426 ms
2026-07-11 1.31 s 170 ms 0.010 1.24 s 381 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 4, 2026, 7:12 PM UTC 44 10.41 s 0 934 ms 1.42 MB 3/3 ±13 1,927 -22% 62.9s Wayback
Sep 27, 2026, 5:31 PM UTC 68 6.38 s 0.059 315 ms 1.26 MB 3/3 ±27 2,705 +9% 51.3s Wayback
Sep 20, 2026, 10:45 AM UTC 67 6.27 s 0.041 264 ms 1.24 MB 3/3 ±3 2,486 0% 48.4s Wayback
Sep 13, 2026, 9:01 AM UTC 67 6.20 s 0.041 267 ms 1.26 MB 3/3 ±0 2,507 +1% 47.2s Wayback
Sep 6, 2026, 5:35 AM UTC 66 6.18 s 0.041 303 ms 1.26 MB 3/3 ±10 2,477 0% 48.2s Wayback
Aug 30, 2026, 1:07 AM UTC 54 7.52 s 0 446 ms 1.30 MB 3/3 ±25 2,441 -2% 53.7s Wayback
Aug 21, 2026, 6:49 AM UTC 64 6.00 s 0.045 365 ms 1.40 MB 3/3 ±8 2,492 0% 54.1s Wayback

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