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

jules.google

https://jules.google/

74PERF 87A11Y 100BEST 92SEO ✗AXE ✗CWV

Ranks Overall #1,756 Astro Showcase #216

Data from Oct 2, 2026, 1:38 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 5.7.12 Built with Astro 5.7.12
Uses PreactPreact
Google Frontend Hosted by Google Frontend

Lighthouse Scores LAB Simulated

74
Performance
no change
87
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 (2026-09-02 → 2026-09-29), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 1.25 s good — 1.25 s – 1.25 s 1.39 s good 91.2% 5.1% 3.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 149 ms good 86.2% 12% 1.9%
CLS CWV Cumulative Layout Shift 1.035 poor — 1.035 – 1.035 0.800 poor 48.2% 7.1% 44.7%
TBT Total Blocking Time 135 ms good — 135 ms – 135 ms n/a —
FCP First Contentful Paint 949 ms good — 949 ms – 949 ms 1.33 s good 85.4% 8.2% 6.4%
Speed Index 949 ms good — 949 ms – 949 ms n/a —
TTFB Time to First Byte 649 ms good — 649 ms – 649 ms 885 ms needs work 70.8% 21.4% 7.8%

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.

element render delay 85 ms
time to first byte 52 ms
resource load delay 8 ms
resource load duration 8 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.25 s
Field p75 1.39 s

The lab LCP is 0.9× the field p75 — real users likely have below-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 405 kB — 405 kB – 405 kB
Requests 33 — 33 – 33
Third-party Weight 301 kB — 301 kB – 301 kB
Third-party CPU 93 ms — 93 ms – 93 ms
Unused JS 138 kB — 138 kB – 138 kB
Unused CSS 0 B — 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 84.2% 341 kB 12
font 8.1% 33.0 kB 1
document 2.9% 11.6 kB 1
stylesheet 2.6% 10.7 kB 1
image 2.1% 8.3 kB 14
other 0.1% 520 B 1
Total 405 kB 33

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 301 kB 93 ms
Total 301 kB 93 ms

Page health

Metric Value Change / range Trend
Main Thread Work 1.79 s — 1.79 s – 1.79 s
Long Tasks 3 — 3 – 3
DOM Elements 577 — 577 – 577
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 68 — 68 – 68
A11y Failures 3 — 3 – 3
A11y Failing Nodes 12 — 12 – 12

Main thread work

Task Time Share Duration Simulated
script evaluation 44% 785 ms
other 31% 557 ms
style layout 11% 190 ms
paint composite render 6% 103 ms
script parse compile 4% 72 ms
parse HTML 4% 69 ms
garbage collection 1% 16 ms
Total 1.79 s

Axe violations axe-core 4.13.0, full rule set

68 violating nodes across 4 rules, 470 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 56 nodes
    Offending elements (5 of 56)
    1. .md\:min-h-\[30vh\]
      <div class="w-full md:p-0 relative max-w-screen-lg md:overflow-visible overflow-x-hidden mx-auto md:min-h-[30vh]">
    2. .bg-purple-600
      <div class="absolute bottom-0 left-0 right-0 bg-purple-600 bg-size-[1.5em] px-5 py-2 text-purple-50 flex items-center gap-4 text-sm font-bold z-50 will-change-opacity transition-opacity duration-300 …
    3. .relative.flex:nth-child(1) > .whitespace-pre.flex-grow
      <pre class="whitespace-pre flex-grow relative"><code><span class="text-[var(--color-text-keyword)]">import</span> React <span class="text-[var(--color-text-keyword)]">from</span> <span class="text-am…
    4. .code-content > .relative.flex:nth-child(3) > .whitespace-pre.flex-grow
      <pre class="whitespace-pre flex-grow relative">
    5. .relative.flex:nth-child(4) > .whitespace-pre.flex-grow
      <pre class="whitespace-pre flex-grow relative">
  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 8 nodes
    Offending elements (5 of 8)
    1. .md\:hidden > .p-8.md\:p-0.justify-center > .my-2.text-center > .border-purple-500.bg-purple-400.text-purple-950
      <span class="text-sm inline-block bg-amber-50 text-slate-950 font-bold p-1 px-2 my-1 mr-2 bg-purple-400 border-b-2 border-purple-500 text-purple-950 p-2 ">Fixing Jed's Code</span>
    2. .bg-transparent.py-px.pl-3:nth-child(2) > .pr-3.group-hover\:text-purple-400.w-8
      <span class="w-8 text-right pr-3 text-purple-700 select-none group-hover:text-purple-400">10</span>
    3. .bg-purple-500\/10 > .pr-3.group-hover\:text-purple-400.w-8
      <span class="w-8 text-right pr-3 text-purple-700 select-none group-hover:text-purple-400">11</span>
    4. .text-purple-500.ml-2.flex-1
      <code class="ml-2 flex-1 whitespace-pre-wrap break-all text-purple-500"> "next": "10.2.3",</code>
    5. .bg-cyan-400\/10 > .pr-3.group-hover\:text-purple-400.w-8
      <span class="w-8 text-right pr-3 text-purple-700 select-none group-hover:text-purple-400">11</span>
  • critical image-alt — Images must have alternative text 3 nodes
    Offending elements
    1. .inline.motion-reduce\:hidden[src$="plan-01.png"]
      <img src="plan-01.png" width="51" height="20" class="inline motion-reduce:hidden">
    2. img[src$="plan-02.gif"]
      <img src="plan-02.gif" width="51" height="20" class="inline motion-reduce:hidden">
    3. img[src$="plan-03.gif"]
      <img src="plan-03.gif" width="51" height="20" class="inline motion-reduce:hidden">
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html
      <html lang="en">

Accessibility failures 3 of 20 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 8 nodes
  • image-alt — Image elements do not have `[alt]` attributes 3 nodes
  • landmark-one-main — Document does not have a main landmark. 1 node

SEO failures 1 of 9 audits

  • image-alt — Image elements do not have `[alt]` attributes 3 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
2026-09-26 1.37 s 152 ms 0.780 1.31 s 874 ms
2026-09-19 1.35 s 152 ms 0.770 1.29 s 868 ms
2026-09-12 1.32 s 151 ms 0.770 1.26 s 865 ms
2026-09-05 1.30 s 153 ms 0.780 1.25 s 859 ms
2026-08-29 1.30 s 152 ms 0.760 1.25 s 864 ms
2026-08-22 1.32 s 154 ms 0.740 1.26 s 872 ms
2026-08-15 1.33 s 154 ms 0.730 1.27 s 873 ms
2026-08-08 1.34 s 152 ms 0.690 1.28 s 875 ms
2026-08-01 1.34 s 153 ms 0.660 1.28 s 870 ms
2026-07-25 1.33 s 152 ms 0.660 1.27 s 854 ms
2026-07-18 1.31 s 152 ms 0.650 1.25 s 850 ms
2026-07-11 1.28 s 152 ms 0.640 1.22 s 830 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 1:38 PM UTC 74 1.25 s 1.035 135 ms 405 kB 3/3 ±1 3,071 +24% 24.8s Wayback