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

gulpjs.com

https://gulpjs.com/

94PERF 96A11Y 100BEST 92SEO !AXE ✓CWV

Ranks Overall #857 Developer Tooling #15 Test Runners #3

Data from Oct 6, 2026, 11:07 PM UTC old Measured every 2 days · 25 runs since Aug 20, 2026

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

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 3,380, 36% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

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

Stack

Docusaurus 3.2.1 Built with Docusaurus 3.2.1
Uses ReactReact
GitHub Pages Hosted by GitHub Pages

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 6.00 s. Compare this filmstrip against another site.

  1. 750 ms
  2. 1.50 s
  3. 1.73 s
  4. 3.00 s
  5. 3.75 s
  6. 4.50 s
  7. 5.25 s
  8. 6.00 s

Lighthouse Scores LAB Simulated

94
Performance
↑ +19 (+25.3%)
96
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-07 → 2026-10-04), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 1.98 s good ↓ -2541 ms (-56.2%) significant 1.98 s – 5.59 s 2.23 s good 79.1% 13.5% 7.4%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0.108 needs work ↓ -0.006 (-5.3%) significant 0.103 – 0.228 0.080 good 82.3% 14% 3.7%
TBT Total Blocking Time 142 ms good ↓ -22 ms (-13.4%) 117 ms – 333 ms n/a —
FCP First Contentful Paint 1.72 s good ↓ -776 ms (-31.1%) significant 1.55 s – 2.64 s 2.25 s needs work 62.4% 25.7% 11.9%
Speed Index 1.72 s good ↓ -776 ms (-31.1%) significant 1.55 s – 2.64 s n/a —
TTFB Time to First Byte 630 ms good ↑ +14 ms (+2.3%) 608 ms – 711 ms 1.25 s needs work 48.3% 36.5% 15.2%

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 2.76 s
time to first byte 607 ms
element render delay 7 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.98 s
Field p75 2.23 s

The lab LCP is 0.89× the field p75 — real users likely have below-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 775 kB ↑ +92 B 765 kB – 775 kB
Requests 43 → no change 43 – 44
Third-party Weight 356 kB ↓ -167 B 346 kB – 356 kB
Third-party CPU 73 ms ↓ -8 ms (-9.6%) 56 ms – 121 ms
Unused JS 187 kB ↓ -1.1 kB (-0.6%) 180 kB – 189 kB
Unused CSS 13.8 kB → no change 13.8 kB – 13.8 kB

By resource type

Type Transfer Share Size Requests
script 59.5% 461 kB 7
image 28.2% 218 kB 18
other 4.6% 35.4 kB 12
font 4.2% 32.2 kB 3
stylesheet 2.9% 22.3 kB 2
document 0.7% 5.7 kB 1
Total 775 kB 43

Third parties 3 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 301 kB 57 ms
Google Fonts 34.1 kB 0 ms
Google Analytics 20.9 kB 16 ms
Total 356 kB 73 ms

Without JavaScript

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

Scripts disabled
As rendered

40.2% of pixels differ — parts of the page change. 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 960 ms ↓ -17 ms (-1.7%) 765 ms – 1.46 s
Long Tasks 4 ↑ +1 (+33.3%) 3 – 6
DOM Elements 247 → no change 247 – 247
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

Task Time Share Duration Simulated
script evaluation 53% 507 ms
other 23% 223 ms
script parse compile 10% 96 ms
style layout 9% 89 ms
paint composite render 2% 16 ms
garbage collection 2% 15 ms
parse HTML 1% 14 ms
Total 960 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 314 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 1 of 26 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 1 node

SEO failures 1 of 9 audits

  • meta-description — Document does not have a meta description

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 2.13 s — 0.080 2.13 s 1.21 s
2026-09-26 2.23 s — 0.080 2.13 s 1.15 s
2026-09-19 1.88 s — 0.090 1.85 s —
2026-09-12 1.85 s — 0.090 1.85 s 1.02 s
2026-09-05 2.26 s — 0.080 1.97 s 1.19 s
2026-08-29 2.30 s — 0.080 2.07 s 1.34 s
2026-08-22 2.32 s — 0.080 2.12 s 1.33 s
2026-08-15 2.27 s — 0.080 2.09 s 1.38 s
2026-08-08 2.25 s — 0.080 1.93 s 1.36 s
2026-08-01 2.03 s — 0.080 1.78 s —
2026-07-25 2.09 s — 0.080 2.09 s 1.36 s
2026-07-18 2.15 s — 0.080 2.03 s 1.25 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 6, 2026, 11:07 PM UTC 94 1.98 s 0.108 142 ms 775 kB 3/3 ±23 3,380 +36% 50s Wayback
Oct 3, 2026, 8:51 PM UTC 75 4.52 s 0.114 164 ms 775 kB 3/3 ±8 2,970 +19% 51.4s Wayback
Oct 1, 2026, 2:15 PM UTC 80 3.85 s 0.109 177 ms 775 kB 3/3 ±27 3,009 +21% 51.6s Wayback
Sep 29, 2026, 11:21 AM UTC 84 3.21 s 0.107 197 ms 772 kB 3/3 ±23 3,043 +22% 52.6s Wayback
Sep 25, 2026, 4:40 PM UTC 83 3.51 s 0.114 128 ms 772 kB 3/3 ±22 2,887 +16% 52.5s Wayback
Sep 23, 2026, 10:56 AM UTC 77 3.88 s 0.106 239 ms 771 kB 3/3 ±9 2,476 0% 51.9s Wayback
Sep 21, 2026, 7:45 AM UTC 81 3.53 s 0.107 208 ms 771 kB 3/3 ±5 2,500 +1% 51.9s Wayback
Sep 18, 2026, 1:41 PM UTC 78 3.54 s 0.108 294 ms 771 kB 3/3 ±10 2,331 -6% 53.2s Wayback
Sep 16, 2026, 9:15 AM UTC 86 3.61 s 0.103 117 ms 771 kB 3/3 ±21 4,297 +73% 49s Wayback
Sep 14, 2026, 6:00 AM UTC 67 4.33 s 0.228 306 ms 770 kB 3/3 ±12 2,316 -7% 55s Wayback
Sep 11, 2026, 11:17 PM UTC 78 3.42 s 0.107 311 ms 770 kB 3/3 ±22 2,337 -6% 55.9s Wayback
Sep 9, 2026, 8:42 PM UTC 89 3.00 s 0.108 168 ms 768 kB 3/3 ±19 3,294 +32% 25.3s Wayback
Sep 7, 2026, 7:19 PM UTC 75 3.88 s 0.109 292 ms 769 kB 3/3 ±10 2,493 0% 27.6s Wayback
Sep 5, 2026, 8:07 AM UTC 80 3.15 s 0.106 331 ms 770 kB 3/3 ±16 2,161 -13% 27.5s Wayback
Sep 4, 2026, 1:00 AM UTC 91 1.98 s 0.108 237 ms 769 kB 3/3 ±4 3,011 +21% 24.5s Wayback
Sep 2, 2026, 11:11 PM UTC 85 2.81 s 0.107 327 ms 770 kB 3/3 ±24 2,303 -7% 28.3s Wayback
Sep 1, 2026, 10:43 PM UTC 81 3.53 s 0.106 203 ms 770 kB 3/3 ±5 2,271 -9% 24.8s Wayback
Aug 31, 2026, 9:02 PM UTC 75 4.32 s 0.107 308 ms 771 kB 3/3 ±3 2,204 -11% 25.3s Wayback
Aug 27, 2026, 4:06 PM UTC 74 3.89 s 0.106 333 ms 767 kB 3/3 ±12 2,480 0% 29.9s Wayback
Aug 26, 2026, 4:39 AM UTC 90 2.73 s 0.108 174 ms 767 kB 3/3 ±11 3,013 +21% 23.3s Wayback
Aug 25, 2026, 3:54 AM UTC 78 3.56 s 0.106 293 ms 766 kB 3/3 ±14 2,421 -3% 26.6s Wayback
Aug 24, 2026, 3:03 AM UTC 69 5.59 s 0.108 199 ms 765 kB 3/3 ±23 2,508 +1% 25.7s Wayback
Aug 23, 2026, 1:16 AM UTC 77 3.54 s 0.107 316 ms 767 kB 3/3 ±17 2,474 0% 26.4s Wayback
Aug 22, 2026, 1:10 AM UTC 78 3.54 s 0.107 306 ms 767 kB 3/3 ±14 2,497 0% 27.3s Wayback
Aug 20, 2026, 11:30 PM UTC 80 3.59 s 0.107 218 ms 767 kB 3/3 ±1 2,453 -1% 29.2s Wayback