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

vuepress.vuejs.org

https://vuepress.vuejs.org/

95PERF 96A11Y 100BEST 100SEO !AXE –CWV

Ranks Overall #782 Developer Tooling #15 Site Generators #6

Data from Oct 7, 2026, 5:39 PM UTC old Measured every 2 days · 25 runs since Aug 21, 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

VuePress 2.0.0 Built with VuePress 2.0.0
Uses Vue 3.5.23Vue 3.5.23
Netlify Hosted by Netlify

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 3.00 s. Compare this filmstrip against another site.

  1. 375 ms
  2. 750 ms
  3. 1.13 s
  4. 1.50 s
  5. 1.88 s
  6. 2.25 s
  7. 2.63 s
  8. 3.00 s

Lighthouse Scores LAB Simulated

95
Performance
↓ -2 (-2.1%)
96
Accessibility
no change
100
Best Practices
no change
100
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 2.63 s needs work ↑ +344 ms (+15%) significant 2.27 s – 3.98 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 142 ms good ↑ +49 ms (+52.7%) 21 ms – 176 ms
FCP First Contentful Paint 1.36 s good ↓ -31 ms (-2.2%) 933 ms – 1.41 s
Speed Index 1.36 s good ↓ -31 ms (-2.2%) 933 ms – 1.41 s
TTFB Time to First Byte 606 ms good ↓ -31 ms (-4.9%) 603 ms – 637 ms

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 2.05 s
time to first byte 577 ms
resource load delay 26 ms
element render delay 13 ms

Page weight

Metric Value Change / range Trend
Page Weight 795 kB ↑ +533 B (+0.1%) 786 kB – 795 kB
Requests 81 → no change 81 – 82
Third-party Weight 171 kB ↑ +172 B (+0.1%) 163 kB – 171 kB
Third-party CPU 55 ms ↑ +4 ms (+8.2%) 37 ms – 63 ms
Unused JS 100 kB ↓ -154 B (-0.2%) 96.4 kB – 100 kB
Unused CSS 13.1 kB ↑ +30 B (+0.2%) 13.0 kB – 13.2 kB

By resource type

Type Transfer Share Size Requests
other 47.3% 376 kB 73
script 30.6% 244 kB 3
image 19.4% 154 kB 1
stylesheet 2.1% 16.6 kB 1
document 0.6% 4.5 kB 1
Total 795 kB 81

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 171 kB 55 ms
Total 171 kB 55 ms

Without JavaScript

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

Scripts disabled
As rendered

0% of pixels differ — they are identical. 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 1.01 s ↑ +141 ms (+16.2%) 577 ms – 1.18 s
Long Tasks 5 ↑ +1 (+25%) 3 – 6
DOM Elements 356 → no change 356 – 356
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 → no change 2 – 2
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 2 → no change 2 – 2

Main thread work

Task Time Share Duration Simulated
script evaluation 47% 474 ms
other 29% 289 ms
style layout 14% 139 ms
script parse compile 5% 55 ms
parse HTML 4% 43 ms
paint composite render 1% 6 ms
Total 1.01 s

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 1 rule, 218 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 2 nodes
    Offending elements
    1. .primary 
      <a aria-label="Get Started" class="route-link auto-link vp-hero-action-button primary" href="/guide/getting-started"><!--[--><!--[--><!--]--><!--]-->Get Started<!--[--><!--[--><!--]--><!--]--></a>
    2. .secondary 
      <a aria-label="Introduction" class="route-link auto-link vp-hero-action-button secondary" href="/guide/introduction"><!--[--><!--[--><!--]--><!--]-->Introduction<!--[--><!--[--><!--]--><!--]--></a>

Accessibility failures 1 of 24 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 2 nodes

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
2026-04-11 → 2026-09-26 No data — 25 weeks under the CrUX reporting threshold

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 7, 2026, 5:39 PM UTC 95 2.63 s 0 142 ms 795 kB 3/3 ±9 2,500 +1% 49.2s Wayback
Oct 6, 2026, 11:16 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 48.5s
Oct 3, 2026, 8:51 PM UTC 97 2.29 s 0 93 ms 795 kB 3/3 ±22 2,747 +10% 50.2s Wayback
Sep 30, 2026, 8:04 AM UTC 97 2.42 s 0 40 ms 793 kB 3/3 ±24 3,332 +34% 47.7s Wayback
Sep 28, 2026, 4:00 AM UTC 95 2.63 s 0 136 ms 793 kB 3/3 ±21 2,491 0% 49.9s Wayback
Sep 25, 2026, 6:02 AM UTC 97 2.42 s 0 76 ms 793 kB 3/3 ±25 3,095 +24% 48.7s Wayback
Sep 23, 2026, 12:12 AM UTC 87 3.98 s 0 42 ms 792 kB 3/3 ±18 2,854 +15% 47.9s Wayback
Sep 20, 2026, 11:17 PM UTC 97 2.35 s 0 110 ms 792 kB 3/3 ±3 2,484 0% 50s Wayback
Sep 18, 2026, 1:31 PM UTC 98 2.28 s 0 46 ms 793 kB 3/3 ±22 2,930 +18% 48.7s Wayback
Sep 16, 2026, 3:43 AM UTC 87 3.90 s 0 134 ms 791 kB 3/3 ±22 2,490 0% 51.4s Wayback
Sep 14, 2026, 12:56 AM UTC 97 2.42 s 0 33 ms 792 kB 3/3 ±21 4,113 +65% 47.6s Wayback
Sep 11, 2026, 8:48 PM UTC 95 2.63 s 0 151 ms 791 kB 3/3 ±10 2,500 +1% 49s Wayback
Sep 9, 2026, 5:44 PM UTC 97 2.27 s 0 115 ms 790 kB 3/3 ±6 2,357 -5% 24.6s Wayback
Sep 7, 2026, 3:02 PM UTC 96 2.49 s 0 120 ms 792 kB 3/3 ±9 2,239 -10% 23.3s Wayback
Sep 5, 2026, 3:27 AM UTC 96 2.71 s 0 49 ms 788 kB 3/3 ±10 2,976 +20% 21.6s Wayback
Sep 4, 2026, 1:05 AM UTC 97 2.50 s 0 63 ms 787 kB 3/3 ±20 3,141 +26% 23.7s Wayback
Sep 2, 2026, 11:12 PM UTC 97 2.34 s 0 113 ms 788 kB 3/3 ±20 2,805 +13% 23.7s Wayback
Sep 1, 2026, 8:50 PM UTC 97 2.43 s 0 21 ms 788 kB 3/3 ±5 3,642 +47% 22.7s Wayback
Aug 31, 2026, 6:05 PM UTC 95 2.71 s 0 113 ms 788 kB 3/3 ±10 2,279 -8% 25.9s Wayback
Aug 26, 2026, 2:01 PM UTC 96 2.57 s 0 98 ms 787 kB 3/3 ±2 2,611 +5% 23.7s Wayback
Aug 25, 2026, 10:40 AM UTC 95 2.63 s 0 144 ms 786 kB 3/3 ±25 2,216 -11% 23.9s Wayback
Aug 24, 2026, 9:54 AM UTC 92 2.93 s 0 176 ms 787 kB 3/3 ±27 2,499 +1% 25.5s Wayback
Aug 23, 2026, 9:27 AM UTC 97 2.28 s 0 123 ms 787 kB 3/3 ±28 2,467 -1% 26.2s Wayback
Aug 22, 2026, 9:25 AM UTC 95 2.56 s 0 139 ms 788 kB 3/3 ±9 2,334 -6% 23.7s Wayback
Aug 21, 2026, 8:47 AM UTC 97 2.35 s 0 82 ms 787 kB 3/3 ±21 2,851 +15% 23.7s Wayback