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

whitehouse.gov

https://www.whitehouse.gov/

46PERF 100A11Y 100BEST 85SEO !AXE !CWV

Ranks Overall #1,635 WordPress Showcase #10

Data from Sep 29, 2026, 4:42 AM UTC old Measured once a month · 2 runs since Sep 22, 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

Self-hosted · nginx Hosted by Self-hosted

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 9.29 s. Compare this filmstrip against another site.

  1. 1.16 s
  2. 2.03 s
  3. 3.48 s
  4. 4.65 s
  5. 5.81 s
  6. 6.97 s
  7. 8.13 s
  8. 9.29 s

Lighthouse Scores LAB Simulated

46
Performance
↑ +7 (+17.9%)
100
Accessibility
no change
100
Best Practices
no change
85
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 (2026-08-31 → 2026-09-27), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 23.29 s poor ↑ +2855 ms (+14%) 20.44 s – 23.29 s 2.32 s good 77.6% 12.1% 10.3%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 219 ms needs work 72.6% 17.3% 10.2%
CLS CWV Cumulative Layout Shift 0.028 good ↑ +0.028 0 – 0.028 0.030 good 97.9% 1.5% 0.6%
TBT Total Blocking Time 1.56 s poor ↑ +787 ms (+101.8%) 773 ms – 1.56 s n/a —
FCP First Contentful Paint 1.28 s good ↓ -4917 ms (-79.3%) 1.28 s – 6.20 s 1.00 s good 91.1% 5.8% 3%
Speed Index 4.49 s needs work ↓ -3000 ms (-40.1%) 4.49 s – 7.49 s n/a —
TTFB Time to First Byte 626 ms good ↓ -10 ms (-1.6%) 626 ms – 636 ms 541 ms good 86.6% 9.8% 3.6%

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 18.71 s
element render delay 9.29 s
resource load delay 1.58 s
time to first byte 573 ms

LCP LAB Simulated vs LCP FIELD

Lab 23.29 s
Field p75 2.32 s

The lab LCP is 10.03× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 60.35 MB ↑ +3349.2 kB (+6%) 56.92 MB – 60.35 MB
Requests 114 ↑ +2 (+1.8%) 112 – 114
Third-party Weight 882 kB ↑ +2.7 kB (+0.3%) 879 kB – 882 kB
Third-party CPU 334 ms ↑ +108 ms (+48.1%) 225 ms – 334 ms
Unused JS 246 kB ↑ +1.3 kB (+0.5%) 245 kB – 246 kB
Unused CSS 13.2 kB → no change 13.2 kB – 13.2 kB

By resource type

Type Transfer Share Size Requests
media 92.3% 55.73 MB 17
image 5.5% 3.35 MB 28
script 1% 616 kB 23
font 0.9% 559 kB 28
document 0.1% 45.1 kB 1
other 0.1% 32.1 kB 10
stylesheet <0.1% 18.1 kB 7
Total 60.35 MB 114

Third parties 5 entities

Entity Transfer Size Main thread Simulated
Mailchimp imagescript 422 kB 90 ms
Google Tag Manager script 319 kB 223 ms
Google Fonts font 78.8 kB 0 ms
Parse.ly 61.4 kB 21 ms
intuit.com 415 B 0 ms
Total 882 kB 334 ms

Without JavaScript

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

Scripts disabled
As rendered

96.9% of pixels differ — they have almost nothing in common. 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 6.01 s ↑ +377 ms (+6.7%) 5.63 s – 6.01 s
Long Tasks 20 → no change 20 – 20
DOM Elements 1,225 ↓ -15 (-1.2%) 1,225 – 1,240
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 4 → no change 4 – 4
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 37% 2.24 s
script evaluation 37% 2.22 s
style layout 12% 746 ms
script parse compile 7% 417 ms
garbage collection 3% 167 ms
parse HTML 2% 129 ms
paint composite render 2% 102 ms
Total 6.01 s

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 4 rules, 629 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • minor aria-allowed-role — ARIA role should be appropriate for the element 1 node
    Offending element
    1. #mcforms-132923-353640 .visible 
      <form data-amped-type="step" role="dialog" aria-modal="false" aria-labelledby="popup_label_353640" aria-live="assertive" tabindex="-1" class="step visible" style="display: block; outline-color: trans…
  • minor empty-heading — Headings should not be empty 1 node
    Offending element
    1. h1 
      <h1 class="wp-block-whitehouse-topper__headline"> </h1>
  • serious label-title-only — Form elements should have a visible label 1 node
    Offending element
    1. input[name="EMAIL"] 
      <input type="email" value="" name="EMAIL" placeholder="Your email" title="Your email" required="">
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
    Offending element
    1. .wp-block-whitehouse-header__primary-navigation 
      <nav class="wp-block-whitehouse-header__primary-navigation" data-wp-init="callbacks.initPrimaryNavigation" data-wp-on-async-window--resize="callbacks.handlePrimaryNavigationResize" data-wp-on-async--…

SEO failures 2 of 10 audits

  • link-text — Links do not have descriptive text 1 item
  • crawlable-anchors — Links are not crawlable 14 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-10-03 2.43 s 225 ms 0.030 1.05 s 570 ms
2026-09-26 2.32 s 219 ms 0.030 1.01 s 542 ms
2026-09-19 2.34 s 220 ms 0.030 1.03 s 554 ms
2026-09-12 2.35 s 219 ms 0.030 1.02 s 548 ms
2026-09-05 2.41 s 222 ms 0.030 1.04 s 552 ms
2026-08-29 2.63 s 248 ms 0.030 1.13 s 585 ms
2026-08-22 2.60 s 249 ms 0.030 1.10 s 569 ms
2026-08-15 2.54 s 242 ms 0.030 1.09 s 557 ms
2026-08-08 2.62 s 164 ms 0.040 1.05 s 545 ms
2026-08-01 2.64 s 165 ms 0.040 1.05 s 547 ms
2026-07-25 2.66 s 169 ms 0.040 1.05 s 543 ms
2026-07-18 2.68 s 169 ms 0.040 1.06 s 545 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 29, 2026, 4:42 AM UTC 46 23.29 s 0.028 1.56 s 60.35 MB 3/3 ±7 2,686 +8% 119.8s Wayback
Sep 22, 2026, 3:46 AM UTC 39 20.44 s 0 773 ms 56.92 MB 3/3 ±6 2,470 -1% 110.2s Wayback