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

gsap.com

https://gsap.com/

85PERF 90A11Y 100BEST 100SEO !AXE !CWV

Ranks Overall #1,091 Built Awesome #765

Data from Sep 29, 2026, 11:18 AM UTC old Measured once a week Β· 7 runs since Aug 20, 2026

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

Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

85
Performance
↓ -14 (-14.1%)
90
Accessibility
no change
100
Best Practices
no change
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 (2026-08-31 → 2026-09-27), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 4.22 s poor ↑ +2161 ms (+105.1%) significant 1.61 s – 4.22 s 3.15 s needs work 67.5% 12.6% 20%
INP CWV Interaction to Next Paint β€” field only, no lab run can measure it n/a — 129 ms good 87.1% 10% 2.9%
CLS CWV Cumulative Layout Shift 0 good β†’ no change 0 – 0 0 good 98.8% 0.5% 0.7%
TBT Total Blocking Time 99 ms good ↑ +39 ms (+65%) 60 ms – 153 ms n/a —
FCP First Contentful Paint 1.30 s good ↑ +50 ms (+4%) 1.25 s – 2.00 s 1.93 s needs work 70.2% 22.8% 7%
Speed Index 2.95 s good ↑ +529 ms (+21.8%) significant 2.42 s – 2.95 s n/a —
TTFB Time to First Byte 608 ms good ↓ -8 ms (-1.3%) 608 ms – 628 ms 1.60 s needs work 34.8% 48% 17.2%

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.

time to first byte 235 ms
element render delay 161 ms

LCP LAB Simulated vs LCP FIELD

Lab 4.22 s
Field p75 3.15 s

The lab LCP is 1.34Γ— the field p75 β€” real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 5.59 MB ↑ +1379.8 kB (+33.8%) 759 kB – 5.59 MB
Requests 38 β†’ no change 33 – 38
Third-party Weight 185 kB ↑ +188 B (+0.1%) 181 kB – 185 kB
Third-party CPU 55 ms ↑ +11 ms (+23.9%) 44 ms – 79 ms
Unused JS 131 kB ↑ +885 B (+0.7%) 129 kB – 132 kB
Unused CSS 12.8 kB ↓ -11 B (-0.1%) 12.8 kB – 12.9 kB

By resource type

Type Transfer Share Size Requests
media 87.8% 4.91 MB 15
script 5.5% 306 kB 7
image 3.9% 217 kB 6
document 1.4% 79.7 kB 1
font 1.4% 77.3 kB 2
other 0.1% 4.1 kB 3
Total 5.59 MB 38

Third parties 2 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 175 kB 51 ms
Cloudflare 10.2 kB 4 ms
Total 185 kB 55 ms

Page health

Metric Value Change / range Trend
Main Thread Work 2.49 s ↑ +255 ms (+11.4%) 2.23 s – 3.20 s
Long Tasks 3 β†’ no change 3 – 5
DOM Elements 1,552 β†’ no change 1,552 – 1,552
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 β†’ no change 2 – 2
A11y Failures 3 β†’ no change 3 – 3
A11y Failing Nodes 3 β†’ no change 3 – 3

Main thread work

Task Time Share Duration Simulated
other 46% 1.15 s
script evaluation 27% 670 ms
style layout 15% 366 ms
paint composite render 8% 197 ms
parse HTML 2% 55 ms
script parse compile 2% 43 ms
garbage collection 0% 10 ms
Total 2.49 s

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 798 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate heading-order β€” Heading levels should only increase by one 1 node
    Offending element
    1. .subtitle--large
      <h3 class="subtitle subtitle--large subtitle--left " data-block="subtitle" data-delay="2.5" style="opacity: 1; visibility: inherit;">
  • serious link-name β€” Links must have discernible text 1 node
    Offending element
    1. .footer-copy__webflow
      <a class="footer-copy__webflow" href="https://webflow.com/">

Accessibility failures 3 of 23 audits

  • heading-order β€” Heading elements are not in a sequentially-descending order 1 node
  • link-name β€” Links do not have a discernible name 1 node
  • target-size β€” Touch targets do not have sufficient size or spacing. 1 node

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache http/1.1

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 3.14 s 129 ms 0 1.93 s 1.60 s
2026-09-19 3.09 s 128 ms 0 1.90 s 1.59 s
2026-09-12 3.08 s 131 ms 0 1.90 s 1.61 s
2026-09-05 3.16 s 134 ms 0 1.91 s 1.59 s
2026-08-29 3.14 s 132 ms 0 1.91 s 1.60 s
2026-08-22 3.85 s 131 ms 0 1.92 s 1.60 s
2026-08-15 4.44 s 128 ms 0 1.91 s 1.59 s
2026-08-08 4.61 s 130 ms 0 1.91 s 1.60 s
2026-08-01 4.58 s 128 ms 0 1.90 s 1.59 s
2026-07-25 4.27 s 129 ms 0 1.90 s 1.59 s
2026-07-18 3.75 s 130 ms 0 1.88 s 1.59 s
2026-07-11 3.35 s 130 ms 0 1.87 s 1.57 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 29, 2026, 11:18 AM UTC 85 4.22 s 0 99 ms 5.59 MB 3/3 Β±4 3,120 +26% 44.6s Wayback
Sep 22, 2026, 9:14 AM UTC 99 2.06 s 0 60 ms 4.18 MB 3/3 Β±1 3,938 +58% 41.8s Wayback
Sep 15, 2026, 6:08 AM UTC 98 1.61 s 0 153 ms 759 kB 3/3 Β±13 2,472 -1% 32.4s Wayback
Sep 8, 2026, 5:40 AM UTC 90 3.36 s 0 65 ms 4.44 MB 3/3 Β±9 3,219 +29% 40.4s Wayback
Sep 1, 2026, 1:43 AM UTC 85 4.15 s 0 133 ms 4.74 MB 3/3 Β±14 2,464 -1% 43.9s Wayback
Aug 29, 2026, 6:02 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 27.1s
Aug 20, 2026, 11:29 PM UTC 89 3.36 s 0 153 ms 2.02 MB 3/3 Β±7 2,474 -1% 37s Wayback

Embed this score

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