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.

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usac.ucla.edu

https://www.usac.ucla.edu/

49PERF 95A11Y 100BEST 85SEO !AXE –CWV

Ranks Overall #1,495 Built Awesome #996

Data from Oct 5, 2026, 5:56 PM UTC old Measured once a week · 8 runs since Aug 21, 2026

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

Moved from https://usac.ucla.edu/.

History from the previous URL is included below, with the move on Sep 6, 2026. A step-change around that point is likely the change of address rather than a regression.

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

Stack

Uses Font Awesome 5.12.1Font Awesome 5.12.1
Sq Hosted by Squarespace

Lighthouse Scores LAB Simulated

49
Performance
↑ +3 (+6.5%)
95
Accessibility
no change
100
Best Practices
no change
85
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 15.13 s poor ↓ -197 ms (-1.3%) 15.13 s – 18.04 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 646 ms poor ↑ +93 ms (+16.8%) 212 ms – 735 ms
FCP First Contentful Paint 3.36 s poor ↓ -1227 ms (-26.8%) significant 3.35 s – 4.59 s
Speed Index 5.02 s needs work ↓ -1363 ms (-21.4%) significant 4.69 s – 6.38 s
TTFB Time to First Byte 644 ms good ↓ -112 ms (-14.8%) significant 636 ms – 756 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.

element render delay 791 ms
time to first byte 20 ms

Page weight

Metric Value Change / range Trend
Page Weight 3.72 MB ↑ +204.9 kB (+6%) significant 3.51 MB – 3.76 MB
Requests 80 → no change 79 – 80
Third-party Weight 3.67 MB ↑ +216.1 kB (+6.4%) significant 3.45 MB – 3.70 MB
Third-party CPU 296 ms ↓ -11 ms (-3.6%) 230 ms – 348 ms
Unused JS 629 kB ↑ +126.4 kB (+25.9%) significant 471 kB – 630 kB
Unused CSS 131 kB ↓ -156 B (-0.1%) 130 kB – 131 kB

By resource type

Type Transfer Share Size Requests
image 46% 1.71 MB 8
script 45.3% 1.68 MB 53
stylesheet 4.5% 168 kB 11
font 2.2% 83.6 kB 5
document 1.3% 47.5 kB 1
other 0.6% 23.3 kB 2
Total 3.72 MB 80

Third parties 5 entities

Entity Transfer Size Main thread Simulated
squarespace-cdn.com image 1.81 MB 0 ms
Squarespace script 1.35 MB 236 ms
Cloudflare CDN script 347 kB 38 ms
sqspcdn.com 126 kB 12 ms
Google CDN 33.5 kB 11 ms
Total 3.67 MB 296 ms

Page health

Metric Value Change / range Trend
Main Thread Work 3.84 s ↓ -49 ms (-1.3%) 3.02 s – 4.69 s
Long Tasks 17 ↑ +2 (+13.3%) 14 – 20
DOM Elements 1,402 → no change 1,402 – 1,402
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 3 → no change 3 – 3
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 4 → no change 4 – 4

Main thread work

Task Time Share Duration Simulated
other 31% 1.19 s
script evaluation 25% 944 ms
style layout 23% 877 ms
script parse compile 14% 530 ms
parse HTML 4% 170 ms
paint composite render 3% 99 ms
garbage collection 1% 28 ms
Total 3.84 s

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 1 rule, 931 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate heading-order — Heading levels should only increase by one 3 nodes
    Offending elements
    1. #block-9e081d59ed7413ddee45 > .sqs-block-content > .sqs-text-block-container > .sqs-html-content[data-sqsp-text-block-content=""] > h3 
      <h3 style="white-space: pre-wrap; transition-timing-function: ease; transition-duration: 0.8s; transition-delay: 0.095s;" data-rte-preserve-empty="true" class="preSlide slideIn">Your <em>voice</em>. …
    2. #block-424f2b2c5749b3b10c42 > .sqs-block-content > .sqs-text-block-container > .sqs-html-content[data-sqsp-text-block-content=""] > h4 
      <h4 style="text-align: justify; white-space: pre-wrap; transition-timing-function: ease; transition-duration: 0.8s; transition-delay: 0.195s;" data-rte-preserve-empty="true" class="preFade">
    3. #block-257b3fdd36147a5d64cb > .sqs-block-content > .sqs-text-block-container > .sqs-html-content[data-sqsp-text-block-content=""] > h3 
      <h3 style="white-space: pre-wrap; transition-timing-function: ease; transition-duration: 0.8s; transition-delay: 0.53s;" data-rte-preserve-empty="true" class="preSlide">

Accessibility failures 2 of 28 audits

  • heading-order — Heading elements are not in a sequentially-descending order 3 nodes
  • target-size — Touch targets do not have sufficient size or spacing. 1 node

SEO failures 2 of 10 audits

  • meta-description — Document does not have a meta description
  • link-text — Links do not have descriptive text 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
Oct 5, 2026, 5:56 PM UTC 49 15.13 s 0 646 ms 3.72 MB 3/3 ±3 2,398 -4% 40.2s Wayback
Sep 28, 2026, 10:37 AM UTC 46 15.32 s 0 553 ms 3.51 MB 3/3 ±10 2,433 -2% 43.3s Wayback
Sep 21, 2026, 1:07 AM UTC 59 15.61 s 0 293 ms 3.60 MB 3/3 ±20 3,001 +21% 35.1s Wayback
Sep 14, 2026, 12:45 AM UTC 54 17.38 s 0 399 ms 3.53 MB 3/3 ±15 2,962 +19% 37s Wayback
Sep 6, 2026, 11:30 PM UTC 61 18.04 s 0 212 ms 3.76 MB 3/3 ±9 2,992 +20% 35.4s Wayback
Sep 6, 2026, 6:51 PM UTC old URL 45 16.00 s 0 735 ms 3.54 MB 3/3 ±10 2,258 -9% 46.7s Wayback
Aug 30, 2026, 5:55 PM UTC old URL 53 15.51 s 0 416 ms 3.56 MB 3/3 ±14 2,352 -5% 43.7s Wayback
Aug 21, 2026, 10:28 AM UTC old URL 47 16.01 s 0 657 ms 3.54 MB 3/3 ±10 2,494 0% 42.5s Wayback

Embed this score

Use this web component to show usac.ucla.edu'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.usac.ucla.edu/"></speedlify2-score>