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

playwright.dev

https://playwright.dev/

81PERF 98A11Y 100BEST 92SEO !AXE !CWV

Ranks Overall #1,093 Developer Tooling #30 Test Runners #5

Data from Oct 8, 2026, 11:27 PM UTC old, older than this category's 3 days freshness target Measured every 2 days · 22 runs since Aug 27, 2026

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

This data is old.

Sites are measured on a rolling schedule, so figures here are the newest successful measurement rather than a reading taken just now. Comparisons against other sites may span different points in time.

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

Stack

Docusaurus 3.10.1 Built with Docusaurus 3.10.1
Uses ReactReact
GitHub Pages Hosted by GitHub Pages

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. 1.66 s
  6. 2.25 s
  7. 2.63 s
  8. 3.00 s

Lighthouse Scores LAB Simulated

81
Performance
↓ -1 (-1.2%)
98
Accessibility
no change
100
Best Practices
no change
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 (2026-09-09 → 2026-10-06), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 4.96 s poor ↑ +21 ms (+0.4%) 3.91 s – 4.98 s 1.14 s good 93.5% 4% 2.5%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 201 ms needs work 74.8% 20% 5.2%
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0 0 good 97% 2.2% 0.8%
TBT Total Blocking Time 90 ms good ↑ +15 ms (+20%) significant 60 ms – 108 ms n/a —
FCP First Contentful Paint 1.06 s good ↓ -4 ms (-0.4%) 1.05 s – 1.07 s 1.14 s good 88.2% 6.9% 5%
Speed Index 1.06 s good ↓ -4 ms (-0.4%) 1.05 s – 1.07 s n/a —
TTFB Time to First Byte 606 ms good ↓ -4 ms (-0.7%) 601 ms – 618 ms 512 ms good 85.9% 9.3% 4.8%

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.

element render delay 1.08 s
time to first byte 581 ms

LCP LAB Simulated vs LCP FIELD

Lab 4.96 s
Field p75 1.14 s

The lab LCP is 4.35× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 1.15 MB ↑ +135 B 1.15 MB – 1.15 MB
Requests 25 → no change 25 – 25
Third-party Weight 0 B → no change 0 B – 0 B
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 43.3 kB ↑ +2 B 43.2 kB – 43.3 kB
Unused CSS 28.7 kB → no change 26.8 kB – 28.7 kB

By resource type

Type Transfer Share Size Requests
image 78.6% 905 kB 11
script 15.6% 179 kB 5
stylesheet 3% 35.0 kB 1
other 2.2% 24.9 kB 3
document 0.6% 6.7 kB 1
Total 1.15 MB 25

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 826 ms ↑ +111 ms (+15.6%) significant 567 ms – 831 ms
Long Tasks 3 ↑ +2 (+200%) significant 1 – 3
DOM Elements 286 → no change 286 – 286
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 4 → no change 4 – 4
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 4 → no change 4 – 4

Main thread work

Task Time Share Duration Simulated
script evaluation 54% 445 ms
other 19% 158 ms
style layout 14% 117 ms
script parse compile 8% 62 ms
parse HTML 2% 19 ms
paint composite render 2% 16 ms
garbage collection 1% 9 ms
Total 826 ms

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 1 rule, 531 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 4 nodes
    Offending elements
    1. .pathCard_fFQW.col--4.col:nth-child(1) > h3 
      <h3>Playwright Test</h3>
    2. .featureSectionAlt_XlZb.featureSection_efmM:nth-child(2) > .container > .featureSectionContent_DG7g > .row > .col--6.col:nth-child(1) > h4:nth-child(1) 
      <h4>Auto-wait and web-first assertions</h4>
    3. .featureSection_efmM:nth-child(3) > .container > .featureSectionContent_DG7g > .row > .col--6.col:nth-child(1) > h4:nth-child(1) 
      <h4>Accessibility snapshots, not screenshots</h4>
    4. .col--4.col:nth-child(1) > h4 
      <h4><a href="docs/codegen">Test generator</a></h4>

Accessibility failures 1 of 26 audits

  • heading-order — Heading elements are not in a sequentially-descending order 4 nodes

Best Practices failures 1 of 20 audits

  • valid-source-maps — Missing source maps for large first-party JavaScript 1 item

SEO failures 1 of 10 audits

  • robots-txt — robots.txt is not valid 21 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 1.15 s 202 ms 0 1.15 s 518 ms
2026-09-26 1.15 s 197 ms 0 1.14 s 533 ms
2026-09-19 1.12 s 200 ms 0 1.12 s 520 ms
2026-09-12 1.11 s 198 ms 0 1.11 s 515 ms
2026-09-05 1.12 s 191 ms 0 1.12 s 525 ms
2026-08-29 1.09 s 193 ms 0 1.08 s 511 ms
2026-08-22 1.08 s 193 ms 0 1.08 s 507 ms
2026-08-15 1.10 s 192 ms 0 1.10 s 514 ms
2026-08-08 1.11 s 196 ms 0 1.10 s 505 ms
2026-08-01 1.11 s 197 ms 0 1.11 s 506 ms
2026-07-25 1.13 s 198 ms 0 1.12 s 515 ms
2026-07-18 1.13 s 202 ms 0 1.13 s 518 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 8, 2026, 11:27 PM UTC 81 4.96 s 0 90 ms 1.15 MB 3/3 ±0 2,492 0% 47.2s Wayback
Oct 6, 2026, 10:57 PM UTC 82 4.93 s 0 75 ms 1.15 MB 3/3 ±0 2,827 +14% 46.1s Wayback
Oct 3, 2026, 9:00 PM UTC 82 4.95 s 0 83 ms 1.15 MB 3/3 ±18 2,684 +8% 46.9s Wayback
Oct 1, 2026, 2:14 PM UTC 82 4.95 s 0 89 ms 1.15 MB 3/3 ±6 2,501 +1% 47.8s Wayback
Sep 29, 2026, 11:13 AM UTC 81 4.97 s 0 97 ms 1.15 MB 3/3 ±1 2,486 0% 47.1s Wayback
Sep 26, 2026, 9:15 AM UTC 82 4.93 s 0 79 ms 1.15 MB 3/3 ±9 3,032 +22% 45.9s Wayback
Sep 23, 2026, 10:44 PM UTC 81 4.97 s 0 99 ms 1.15 MB 3/3 ±6 2,504 +1% 46.8s Wayback
Sep 21, 2026, 8:02 PM UTC 81 4.98 s 0 108 ms 1.15 MB 3/3 ±1 2,482 0% 47.5s Wayback
Sep 21, 2026, 7:48 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 42.5s
Sep 18, 2026, 8:37 PM UTC 82 4.95 s 0 82 ms 1.15 MB 3/3 ±7 2,657 +7% 46.9s Wayback
Sep 16, 2026, 6:40 PM UTC 81 4.96 s 0 93 ms 1.15 MB 3/3 ±9 2,470 -1% 51.3s Wayback
Sep 14, 2026, 5:51 PM UTC 82 4.94 s 0 76 ms 1.15 MB 3/3 ±2 2,636 +6% 46.4s Wayback
Sep 12, 2026, 6:57 AM UTC 82 4.94 s 0 83 ms 1.15 MB 3/3 ±1 2,462 -1% 46.5s Wayback
Sep 10, 2026, 5:42 AM UTC 82 4.94 s 0 82 ms 1.15 MB 3/3 ±1 2,452 -1% 22.2s Wayback
Sep 8, 2026, 12:59 AM UTC 82 4.95 s 0 85 ms 1.15 MB 3/3 ±6 2,489 0% 22.9s Wayback
Sep 6, 2026, 12:40 AM UTC 82 4.93 s 0 72 ms 1.15 MB 3/3 ±6 3,152 +27% 21.7s Wayback
Sep 4, 2026, 6:15 PM UTC 82 4.93 s 0 78 ms 1.15 MB 3/3 ±1 2,326 -6% 22.4s Wayback
Sep 3, 2026, 11:58 AM UTC 88 3.91 s 0 60 ms 1.15 MB 3/3 ±18 3,259 +31% 21s Wayback
Sep 3, 2026, 1:09 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 24.4s
Sep 1, 2026, 11:05 PM UTC 87 3.98 s 0 82 ms 1.15 MB 3/3 ±8 2,372 -5% 22.9s Wayback
Aug 31, 2026, 9:22 PM UTC 82 4.95 s 0 85 ms 1.15 MB 3/3 ±6 2,432 -2% 23.2s Wayback
Aug 27, 2026, 6:58 PM UTC 87 3.99 s 0 88 ms 1.15 MB 3/3 ±18 2,489 0% 23.2s Wayback