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

central.sonatype.com

https://central.sonatype.com/

40PERF 95A11Y 69BEST 92SEO ✗AXE ✗CWV

Ranks Overall #1,803 Developer Tooling #95 Package Managers #14

Data from Oct 16, 2026, 3:18 PM UTC old Measured every 2 days · 24 runs since Aug 25, 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

Next.js Built with Next.js
Uses ReactReactFont AwesomeFont Awesome
Cloudflare Hosted by Cloudflare

Filmstrip LAB Throttled

How the page drew during the measured load, at 9 points across 11.25 s. Compare this filmstrip against another site.

  1. 1.41 s
  2. 1.75 s
  3. 3.46 s
  4. 4.22 s
  5. 5.63 s
  6. 7.03 s
  7. 8.44 s
  8. 9.85 s
  9. 11.25 s

Lighthouse Scores LAB Simulated

40
Performance
↑ +2 (+5.3%)
95
Accessibility
no change
69
Best Practices
↓ -4 (-5.5%)
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 (2026-09-17 → 2026-10-14), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 5.38 s poor ↓ -6356 ms (-54.2%) significant 3.76 s – 15.63 s 3.14 s needs work 59.6% 26.5% 13.9%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 305 ms needs work 62.5% 31.8% 5.7%
CLS CWV Cumulative Layout Shift 0.702 poor ↑ +0.702 0 – 0.744 0.640 poor 36.2% 12.4% 51.4%
TBT Total Blocking Time 675 ms poor ↓ -605 ms (-47.3%) 566 ms – 1.76 s n/a —
FCP First Contentful Paint 1.10 s good ↓ -2787 ms (-71.7%) significant 1.10 s – 3.89 s 2.25 s needs work 63.8% 24.5% 11.7%
Speed Index 1.10 s good ↓ -4389 ms (-79.9%) significant 1.10 s – 6.06 s n/a —
TTFB Time to First Byte 651 ms good ↓ -84 ms (-11.4%) significant 616 ms – 735 ms 1.28 s needs work 49.7% 33.1% 17.2%

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 1.65 s
resource load delay 1.05 s
time to first byte 636 ms
element render delay 118 ms

LCP LAB Simulated vs LCP FIELD

Lab 5.38 s
Field p75 3.14 s

The lab LCP is 1.71× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 2.44 MB ↑ +445.9 kB (+23%) significant 1.99 MB – 3.18 MB
Requests 99 ↓ -1 (-1%) 76 – 105
Third-party Weight 610 kB ↓ -1.6 kB (-0.3%) 610 kB – 1.01 MB
Third-party CPU 183 ms ↓ -78 ms (-30%) 183 ms – 392 ms
Unused JS 1.04 MB ↓ -673 B (-0.1%) 1.04 MB – 1.65 MB
Unused CSS 13.6 kB ↑ +7 B (+0.1%) 13.6 kB – 13.6 kB

By resource type

Type Transfer Share Size Requests
script 70.5% 1.72 MB 29
image 22.3% 546 kB 8
font 3.7% 91.1 kB 5
stylesheet 2.6% 63.8 kB 15
other 0.4% 10.8 kB 18
document 0.4% 8.8 kB 1
Total 2.44 MB 99

Third parties 6 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 509 kB 117 ms
Osano CMP 74.1 kB 54 ms
Bizible 26.2 kB 13 ms
scarf.sh 216 B 0 ms
Google Analytics 48 B 0 ms
All 6 610 kB 183 ms

Without JavaScript

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

Scripts disabled
As rendered

72.8% of pixels differ — the page changes substantially. 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 3.24 s ↓ -603 ms (-15.7%) 3.03 s – 5.37 s
Long Tasks 12 ↓ -1 (-7.7%) 10 – 20
DOM Elements 566 ↓ -1 (-0.2%) 549 – 571
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 23 → no change 14 – 23
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 5 → no change 2 – 5

Main thread work

Task Time Share Duration Simulated
script evaluation 52% 1.70 s
other 25% 821 ms
script parse compile 13% 424 ms
style layout 4% 128 ms
garbage collection 3% 87 ms
paint composite render 2% 55 ms
parse HTML 1% 26 ms
Total 3.24 s

Axe violations axe-core 4.13.0, full rule set

23 violating nodes across 3 rules, 1185 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 18 nodes
    Offending elements (5 of 18)
    1. h1 
      <h1 class="IndexPage-module-scss-module__2288cW__header" data-test="hero-header">Find OSS Components</h1>
    2. .IndexPage-module-scss-module__2288cW__subHeader 
      <p class="IndexPage-module-scss-module__2288cW__subHeader IndexPage-module-scss-module__2288cW__searchSubHeader">As stewards of Central for nearly 20 years and inventors of both software supply chain…
    3. .HeroDevsIndexAd-module-scss-module__O_OOpa__textContainer 
      <div class="HeroDevsIndexAd-module-scss-module__O_OOpa__textContainer">
    4. .HeroDevsIndexAd-module-scss-module__O_OOpa__eyebrow 
      <div class="HeroDevsIndexAd-module-scss-module__O_OOpa__eyebrow">
    5. .HeroDevsIndexAd-module-scss-module__O_OOpa__cardTitle 
      <h3 class="nx-h3 HeroDevsIndexAd-module-scss-module__O_OOpa__cardTitle">Practical Dependency Management</h3>
  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 4 nodes
    Offending elements
    1. .HeroDevsIndexAd-module-scss-module__O_OOpa__eyebrowMuted 
      <span class="HeroDevsIndexAd-module-scss-module__O_OOpa__eyebrowMuted">HeroDevs</span>
    2. .HeroDevsIndexAd-module-scss-module__O_OOpa__topicsLabel 
      <span class="HeroDevsIndexAd-module-scss-module__O_OOpa__topicsLabel">Inside the guide</span>
    3. .HeroDevsIndexAd-module-scss-module__O_OOpa__attribution > span:nth-child(1) 
      <span>Ebook, ~20 min read</span>
    4. .HeroDevsIndexAd-module-scss-module__O_OOpa__attribution > span:nth-child(2) 
      <span>HeroDevs · Sonatype Partner</span>
  • moderate heading-order — Heading levels should only increase by one 1 node
    Offending element
    1. .HeroDevsIndexAd-module-scss-module__O_OOpa__textTitle 
      <h3 class="nx-h3 HeroDevsIndexAd-module-scss-module__O_OOpa__textTitle"><span>Commercial Support for End‑of‑Life OSS</span> <span><label class="nx-small-tag nx-small-tag--pink"><span class="nx-small-…

Accessibility failures 2 of 28 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 4 nodes
  • heading-order — Heading elements are not in a sequentially-descending order 1 node

Best Practices failures 5 of 19 audits

  • third-party-cookies — Uses third-party cookies 1 item
  • image-aspect-ratio — Displays images with incorrect aspect ratio 1 item
  • 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
  • valid-source-maps — Missing source maps for large first-party JavaScript 3 items

SEO failures 1 of 9 audits

  • link-text — Links do not have descriptive text 1 item

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
2026-10-10 3.14 s 296 ms 0.640 2.20 s 1.28 s
2026-10-03 3.07 s 288 ms 0.620 2.22 s 1.30 s
2026-09-26 3.14 s 291 ms 0.580 2.26 s 1.29 s
2026-09-19 3.29 s 290 ms 0.530 2.35 s 1.36 s
2026-09-12 3.37 s 286 ms 0.480 2.39 s 1.45 s
2026-09-05 3.26 s 288 ms 0.470 2.32 s 1.44 s
2026-08-29 3.41 s 287 ms 0.470 2.38 s 1.56 s
2026-08-22 3.44 s 287 ms 0.470 2.43 s 1.57 s
2026-08-15 3.49 s 288 ms 0.470 2.50 s 1.61 s
2026-08-08 3.51 s 287 ms 0.470 2.48 s 1.59 s
2026-08-01 3.44 s 288 ms 0.470 2.41 s 1.58 s
2026-07-25 3.31 s 284 ms 0.470 2.33 s 1.53 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 16, 2026, 3:18 PM UTC 40 5.38 s 0.702 675 ms 2.44 MB 3/3 ±24 2,985 +20% 76.1s Wayback
Oct 14, 2026, 11:33 AM UTC 38 11.73 s 0 1.28 s 1.99 MB 3/3 ±8 2,434 -2% 83.7s Wayback
Oct 10, 2026, 11:22 PM UTC 51 5.86 s 0 1.76 s 2.85 MB 3/3 ±0 2,508 +1% 110.6s Wayback
Oct 8, 2026, 11:02 PM UTC 26 7.58 s 0.744 1.36 s 2.85 MB 3/3 ±20 2,435 -2% 85.5s Wayback
Oct 6, 2026, 6:53 PM UTC 36 7.71 s 0.701 566 ms 2.85 MB 3/3 ±3 3,101 +25% 102.6s Wayback
Oct 3, 2026, 5:53 PM UTC 51 8.17 s 0 1.13 s 2.85 MB 3/3 ±17 2,503 +1% 106.7s Wayback
Sep 30, 2026, 8:37 PM UTC 39 5.83 s 0.701 621 ms 2.85 MB 3/3 ±3 4,203 +69% 100.8s Wayback
Sep 28, 2026, 6:41 PM UTC 29 6.05 s 0.701 1.31 s 2.84 MB 3/3 ±6 2,498 0% 107.6s Wayback
Sep 25, 2026, 5:52 AM UTC 28 5.93 s 0.701 1.46 s 2.84 MB 3/3 ±9 2,476 0% 116.3s Wayback
Sep 23, 2026, 12:06 AM UTC 37 12.48 s 0 1.60 s 2.84 MB 3/3 ±22 2,480 0% 107.9s Wayback
Sep 20, 2026, 11:11 PM UTC 32 5.77 s 0.666 1.01 s 2.84 MB 3/3 ±7 2,362 -5% 108.1s Wayback
Sep 18, 2026, 1:29 PM UTC 29 6.08 s 0.666 1.41 s 2.84 MB 3/3 ±23 2,385 -4% 110.8s Wayback
Sep 16, 2026, 3:53 AM UTC 38 15.63 s 0 1.24 s 2.31 MB 3/3 ±12 2,495 0% 105.7s Wayback
Sep 14, 2026, 12:58 AM UTC 26 8.04 s 0.663 1.29 s 2.76 MB 3/3 ±15 2,493 0% 106.4s Wayback
Sep 11, 2026, 11:05 PM UTC 30 6.04 s 0.663 1.29 s 2.76 MB 3/3 ±9 2,468 -1% 108.8s Wayback
Sep 9, 2026, 8:34 PM UTC 31 7.86 s 0.663 891 ms 2.76 MB 3/3 ±13 3,293 +32% 33.8s Wayback
Sep 7, 2026, 7:11 PM UTC 31 5.84 s 0.663 1.26 s 2.76 MB 3/3 ±22 2,484 0% 62.8s Wayback
Sep 5, 2026, 3:15 AM UTC 26 8.02 s 0.663 1.27 s 2.76 MB 3/3 ±16 2,287 -8% 66.3s Wayback
Sep 4, 2026, 12:55 AM UTC 34 6.05 s 0.663 784 ms 2.76 MB 3/3 ±11 3,203 +29% 34s Wayback
Sep 2, 2026, 11:04 PM UTC 32 6.05 s 0.489 1.22 s 2.77 MB 3/3 ±13 2,314 -7% 35.8s Wayback
Sep 1, 2026, 8:44 PM UTC 46 3.76 s 0.489 890 ms 2.76 MB 3/3 ±11 3,055 +23% 35.6s Wayback
Aug 31, 2026, 6:02 PM UTC 28 8.14 s 0.450 1.54 s 3.18 MB 3/3 ±11 2,360 -5% 38.7s Wayback
Aug 26, 2026, 7:02 PM UTC 34 5.93 s 0.489 1.01 s 3.17 MB 3/3 ±13 3,080 +24% 41.4s Wayback
Aug 25, 2026, 4:35 PM UTC 31 6.42 s 0.450 1.50 s 3.17 MB 3/3 ±13 2,479 0% 38.9s Wayback