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

duda.co

https://www.duda.co/

25PERF 93A11Y 73BEST 92SEO !AXE !CWV

Ranks Overall #1,635 Website Builders #6

Data from Oct 9, 2026, 10:18 AM UTC old Measured every 2 days · 38 runs since Aug 25, 2026

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

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 3,831, 54% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

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

Stack

Uses PreactPreact
Self-hosted · nginx Hosted by Self-hosted

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 9.65 s. Compare this filmstrip against another site.

  1. 1.21 s
  2. 2.41 s
  3. 3.62 s
  4. 4.44 s
  5. 6.03 s
  6. 7.24 s
  7. 8.44 s
  8. 9.65 s

Lighthouse Scores LAB Simulated

25
Performance
↓ -4 (-13.8%)
93
Accessibility
no change
73
Best Practices
no change
92
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 (2026-09-10 → 2026-10-07), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 29.67 s poor ↑ +23016 ms (+346.1%) 6.65 s – 37.67 s 2.51 s needs work 74.3% 14.8% 11%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 410 ms needs work 53% 27.1% 19.9%
CLS CWV Cumulative Layout Shift 0.030 good ↓ -0.011 (-26.8%) 0 – 0.041 0.010 good 93.2% 4.6% 2.3%
TBT Total Blocking Time 70.70 s poor ↓ -4189 ms (-5.6%) 1.14 s – 82.31 s n/a —
FCP First Contentful Paint 15.32 s poor ↑ +11325 ms (+283.5%) significant 3.90 s – 15.90 s 2.37 s needs work 64.3% 20.1% 15.6%
Speed Index 31.37 s poor ↑ +7750 ms (+32.8%) 8.52 s – 38.69 s n/a —
TTFB Time to First Byte 653 ms good ↑ +25 ms (+4%) 605 ms – 1.22 s 1.10 s needs work 63.1% 25.9% 11%

LCP Subparts LAB Throttled

The subparts attribute LCP to your server, resource discovery, download, or rendering. They come from one throttled load, the same one as the filmstrip, so they add up to that load’s LCP rather than the simulated Lab LCP above.

resource load duration 4.14 s
time to first byte 580 ms
element render delay 10 ms

LCP LAB Simulated vs LCP FIELD

Lab 29.67 s
Field p75 2.51 s

The lab LCP is 11.82× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 12.10 MB ↑ +71.1 kB (+0.6%) 11.67 MB – 15.54 MB
Requests 392 ↑ +26 (+7.1%) 287 – 392
Third-party Weight 11.64 MB ↑ +76.2 kB (+0.7%) 11.22 MB – 20.43 MB
Third-party CPU 2.60 s ↓ -39 ms (-1.5%) 1.95 s – 3.62 s
Unused JS 1.04 MB ↑ +1.8 kB (+0.2%) 935 kB – 1.06 MB
Unused CSS 10.3 kB → no change 0 B – 10.3 kB

By resource type

Type Transfer Share Size Requests
other 64.3% 7.77 MB 80
script 25.3% 3.06 MB 87
image 6.3% 767 kB 50
font 2.5% 306 kB 11
stylesheet 0.9% 108 kB 13
document 0.7% 85.6 kB 4
Total 12.10 MB 392

Third parties 34 entities

Entity Transfer Size Main thread Simulated
cdn-website.com other 8.09 MB 52 ms
Unpkg 966 kB 1.51 s
Google Tag Manager 714 kB 245 ms
multiscreensite.com 333 kB 0 ms
audioeye.com 299 kB 343 ms
All 34 11.64 MB 2.60 s

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

Scripts disabled
As rendered

26.3% of pixels differ — parts of the page change. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric Value Change / range Trend
Main Thread Work 174.89 s ↓ -4132 ms (-2.3%) 16.32 s – 180.18 s
Long Tasks 20 → no change 20 – 20
DOM Elements 1,632 ↑ +7 (+0.4%) 1,567 – 2,095
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 4 → no change 4 – 5
A11y Failures 3 → no change 3 – 3
A11y Failing Nodes 4 → no change 4 – 5

Main thread work

Task Time Share Duration Simulated
other 89% 156.36 s
script evaluation 9% 15.55 s
style layout 1% 1.37 s
paint composite render 0% 692 ms
script parse compile 0% 481 ms
garbage collection 0% 338 ms
parse HTML 0% 102 ms
Total 174.89 s

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 4 rules, 1908 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 1 node
    Offending element
    1. .termly-styles-module-solid-f14732 
      <button data-tid="banner-accept" class="termly-styles-module..." style="background: rgb(245,...">
  • serious link-name — Links must have discernible text 1 node
    Offending element
    1. .logo 
      <a href="https://www.duda.co/" class="logo"> <svg aria-hidden="true"> <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#logo_duda_textfill"></use> </svg> </a>
  • serious nested-interactive — Interactive controls must not be nested 1 node
    Offending element
    1. .salespeak-mci-bubble 
      <div class="salespeak-mci-bubble salespeak-mci--show" role="button" tabindex="0" aria-label="Open launcher">
  • moderate page-has-heading-one — Page should contain a level-one heading 1 node
    Offending element
    1. html 
      <html xmlns="http://www.w3.org/1999/xhtml" lang="en" class="touch" style="--salespeak-viewport-bottom-inset: 0px;">

Accessibility failures 3 of 31 audits

  • label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 2 nodes
  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 1 node
  • link-name — Links do not have a discernible name 1 node

Best Practices failures 3 of 19 audits

  • third-party-cookies — Uses third-party cookies 29 items
  • errors-in-console — Browser errors were logged to the console 2 items
  • inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item

SEO failures 1 of 9 audits

  • link-text — Links do not have descriptive text 3 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 2 console errors

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-10-03 2.54 s 399 ms 0.010 2.38 s 1.11 s
2026-09-26 2.58 s 405 ms 0.010 2.41 s 1.10 s
2026-09-19 2.56 s 363 ms 0.020 2.37 s 1.09 s
2026-09-12 2.55 s 322 ms 0.020 2.32 s 1.05 s
2026-09-05 2.63 s 287 ms 0.020 2.30 s 1.06 s
2026-08-29 2.62 s 254 ms 0.020 2.31 s 1.05 s
2026-08-22 2.63 s 251 ms 0.020 2.33 s 1.08 s
2026-08-15 2.63 s 257 ms 0.020 2.33 s 1.10 s
2026-08-08 2.45 s 245 ms 0.020 2.24 s 1.07 s
2026-08-01 2.30 s 261 ms 0.020 2.06 s 1.01 s
2026-07-25 2.06 s 278 ms 0.020 1.91 s 955 ms
2026-07-18 2.06 s 294 ms 0.020 1.92 s 956 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 9, 2026, 10:18 AM UTC 25 29.67 s 0.030 70.70 s 12.10 MB 3/3 ±4 3,831 +54% 521.1s Wayback
Oct 8, 2026, 5:51 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 30.7s
Oct 8, 2026, 2:36 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 337.7s
Oct 7, 2026, 5:18 PM UTC lighthouse timed out after 120000ms 363.4s
Oct 6, 2026, 10:58 PM UTC lighthouse timed out after 120000ms 480.6s
Oct 2, 2026, 12:38 AM UTC The "start lh:driver:navigate" performance mark has not been set 371.4s
Sep 29, 2026, 10:15 PM UTC 29 6.65 s 0.041 74.89 s 12.03 MB 2/3 ±0 4,443 +79% 527.5s Wayback
Sep 26, 2026, 6:32 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 303.7s
Sep 24, 2026, 6:20 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 309s
Sep 24, 2026, 1:19 AM UTC lighthouse timed out after 120000ms 480.5s
Sep 23, 2026, 3:33 PM UTC lighthouse timed out after 120000ms 480.4s
Sep 23, 2026, 6:05 AM UTC lighthouse timed out after 120000ms 480.1s
Sep 22, 2026, 6:33 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 25.8s
Sep 22, 2026, 3:29 AM UTC lighthouse timed out after 120000ms 480.3s
Sep 19, 2026, 10:19 PM UTC 27 8.44 s 0.010 79.48 s 11.78 MB 3/3 ±3 2,954 +19% 603.6s Wayback
Sep 19, 2026, 8:42 AM UTC lighthouse timed out after 120000ms 480.2s
Sep 17, 2026, 4:19 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 26s
Sep 17, 2026, 5:46 AM UTC lighthouse timed out after 120000ms 480.2s
Sep 16, 2026, 9:53 PM UTC lighthouse timed out after 120000ms 245.6s
Sep 14, 2026, 9:38 PM UTC 25 29.70 s 0 77.08 s 11.81 MB 3/3 ±3 2,964 +19% 599.6s Wayback
Sep 12, 2026, 3:12 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 31.4s
Sep 11, 2026, 3:14 AM UTC lighthouse timed out after 120000ms 480.4s
Sep 10, 2026, 5:44 AM UTC lighthouse timed out after 120000ms 360.5s
Sep 9, 2026, 8:35 PM UTC lighthouse timed out after 120000ms 243.2s
Sep 9, 2026, 1:27 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 254.9s
Sep 9, 2026, 3:16 AM UTC lighthouse timed out after 120000ms 360.1s
Sep 8, 2026, 6:20 PM UTC lighthouse timed out after 120000ms 360.1s
Sep 6, 2026, 4:52 PM UTC 25 27.43 s 0 78.88 s 11.67 MB 1/3 — 3,068 +23% 367.1s Wayback
Sep 5, 2026, 8:10 PM UTC lighthouse timed out after 120000ms 360.3s
Sep 4, 2026, 9:29 PM UTC lighthouse timed out after 120000ms 360.3s