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

running.supply

https://running.supply/

96PERF 95A11Y 100BEST 100SEO ✗AXE ✓CWV

Ranks Overall #1,211 Astro Showcase #115

Data from Oct 2, 2026, 1:43 PM UTC old Measured once a month · 1 run since Oct 2, 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

Astro Built with Astro
Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

96
Performance
no change
95
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

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

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-02 → 2026-09-29), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 2.39 s good — 2.39 s – 2.39 s 1.73 s good 86% 7.8% 6.2%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 99 ms good 91.9% 6.3% 1.8%
CLS CWV Cumulative Layout Shift 0 good — 0 – 0 0 good 98.4% 1% 0.6%
TBT Total Blocking Time 38 ms good — 38 ms – 38 ms n/a —
FCP First Contentful Paint 2.07 s needs work — 2.07 s – 2.07 s 1.54 s good 82.4% 10.3% 7.3%
Speed Index 2.59 s good — 2.59 s – 2.59 s n/a —
TTFB Time to First Byte 648 ms good — 648 ms – 648 ms 1.18 s needs work 57.1% 31.5% 11.5%

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 648 ms
element render delay 103 ms

LCP LAB Simulated vs LCP FIELD

Lab 2.39 s
Field p75 1.73 s

The lab LCP is 1.38× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 1.30 MB — 1.30 MB – 1.30 MB
Requests 152 — 152 – 152
Third-party Weight 5.4 kB — 5.4 kB – 5.4 kB
Third-party CPU 0 ms — 0 ms – 0 ms
Unused JS 0 B — 0 B – 0 B
Unused CSS 0 B — 0 B – 0 B

By resource type

Type Transfer Share Size Requests
image 85.8% 1.11 MB 133
font 4.8% 61.9 kB 4
script 4.7% 60.9 kB 9
document 3.5% 44.8 kB 1
stylesheet 0.9% 11.5 kB 1
other 0.3% 4.5 kB 3
Total 1.30 MB 152

Third parties 1 entities

Entity Transfer Size Main thread Simulated
substackcdn.com image 5.4 kB 0 ms
Total 5.4 kB 0 ms

Page health

Metric Value Change / range Trend
Main Thread Work 1.79 s — 1.79 s – 1.79 s
Long Tasks 2 — 2 – 2
DOM Elements 2,844 — 2,844 – 2,844
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 48 — 48 – 48
A11y Failures 2 — 2 – 2
A11y Failing Nodes 8 — 8 – 8

Main thread work

Task Time Share Duration Simulated
other 51% 907 ms
style layout 22% 388 ms
script evaluation 14% 252 ms
paint composite render 9% 156 ms
parse HTML 4% 75 ms
garbage collection 0% 8 ms
script parse compile 0% 5 ms
Total 1.79 s

Axe violations axe-core 4.13.0, full rule set

48 violating nodes across 2 rules, 893 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 41 nodes
    Offending elements (5 of 41)
    1. .branding-subtitle 
      <p class="branding-subtitle" style="touch-action: none;">The Running Product Archive</p>
    2. h1 
      <h1 class="branding-title" style="touch-action: none;">Running Supply</h1>
    3. .branding-count 
      <p class="branding-count" style="touch-action: none;">386 products · drag to explore</p>
    4. .branding-button > span 
      <span style="touch-action: none;">Browse collection</span>
    5. .canvas-nl-card 
      <a href="https://runningsupply.substack.com/p/running-supply-96-the-hip-running" target="_blank" rel="noopener noreferrer" class="canvas-nl-card" draggable="false" style="touch-action: none;">
  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 7 nodes
    Offending elements (5 of 7)
    1. .top-\[0\.5px\] 
      <span class="relative top-[0.5px]">Login with Strava</span>
    2. .branding-subtitle 
      <p class="branding-subtitle" style="touch-action: none;">The Running Product Archive</p>
    3. .branding-count 
      <p class="branding-count" style="touch-action: none;">386 products · drag to explore</p>
    4. .canvas-nl-desc 
      <p class="canvas-nl-desc" style="touch-action: none;">If running is booming amongst Gen Z and Millenials, where is all the money going?</p>
    5. div[data-x="-81"] > .tile-link > .tile-label > .tile-brand 
      <p class="tile-brand" style="touch-action: none;">Rayon Vert</p>

Accessibility failures 2 of 19 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 7 nodes
  • label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 1 node

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 1.92 s 114 ms 0 1.65 s 1.19 s
2026-09-19 1.94 s 112 ms 0 1.69 s 1.22 s
2026-09-12 1.77 s 103 ms 0 1.51 s 1.20 s
2026-09-05 2.09 s 88 ms 0 1.65 s 1.58 s
2026-08-29 2.09 s 86 ms 0 1.67 s 1.68 s
2026-08-22 2.09 s 77 ms 0 1.70 s 2.00 s
2026-08-15 2.47 s 79 ms 0 2.20 s 2.28 s
2026-08-08 2.86 s 64 ms 0 2.54 s 2.59 s
2026-08-01 3.07 s 65 ms 0 2.70 s 2.73 s
2026-07-25 3.19 s 70 ms 0 2.85 s 2.61 s
2026-07-18 2.91 s 66 ms 0 2.63 s 2.39 s
2026-07-11 2.76 s 65 ms 0 2.58 s 2.37 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 1:43 PM UTC 96 2.39 s 0 38 ms 1.30 MB 3/3 ±1 3,046 +23% 43.5s Wayback