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

packagist.org

https://packagist.org/

99PERF 81A11Y 100BEST 100SEO ✗AXE ✓CWV

Ranks Overall #1,332 Developer Tooling #45 Package Managers #8

Data from Oct 9, 2026, 3:03 AM UTC old Measured every 2 days · 21 runs since Aug 25, 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 3,444, 39% faster than this project's median of 2,487. 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

Uses PreactPreact
Bu Hosted by Bunny CDN

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 15.52 s. Compare this filmstrip against another site.

  1. 1.94 s
  2. 2.03 s
  3. 5.82 s
  4. 7.76 s
  5. 9.70 s
  6. 11.64 s
  7. 13.58 s
  8. 15.52 s

Lighthouse Scores LAB Simulated

99
Performance
↑ +3 (+3.1%)
81
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 (2026-09-09 → 2026-10-06), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 1.82 s good ↓ -994 ms (-35.3%) significant 1.54 s – 3.99 s 1.28 s good 91.4% 5% 3.6%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 134 ms good 88.9% 9.4% 1.7%
CLS CWV Cumulative Layout Shift 0.002 good → no change 0 – 0.109 0 good 96% 1.3% 2.8%
TBT Total Blocking Time 46 ms good ↑ +5 ms (+12.2%) 23 ms – 212 ms n/a —
FCP First Contentful Paint 1.22 s good ↓ -127 ms (-9.4%) 1.07 s – 1.65 s 1.28 s good 85.1% 9.1% 5.9%
Speed Index 1.22 s good ↓ -127 ms (-9.4%) 1.07 s – 4.47 s n/a —
TTFB Time to First Byte 624 ms good ↑ +23 ms (+3.8%) 601 ms – 750 ms 737 ms good 77.5% 14.4% 8.1%

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 1.32 s
time to first byte 712 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.82 s
Field p75 1.28 s

The lab LCP is 1.42× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 478 kB ↑ +14 B 460 kB – 507 kB
Requests 17 → no change 17 – 17
Third-party Weight 4.7 kB ↑ +23 B (+0.5%) 4.7 kB – 4.7 kB
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 90.7 kB ↑ +114 B (+0.1%) 90.6 kB – 113 kB
Unused CSS 58.1 kB → no change 31.9 kB – 58.1 kB

By resource type

Type Transfer Share Size Requests
script 32.6% 156 kB 1
image 29.7% 142 kB 6
font 18% 86.1 kB 5
stylesheet 12.9% 61.5 kB 1
other 5.4% 26.0 kB 3
document 1.3% 6.2 kB 1
Total 478 kB 17

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Algolia other 4.7 kB 0 ms
Total 4.7 kB 0 ms

Without JavaScript

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

Scripts disabled
As rendered

0.3% of pixels differ — they are nearly 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 485 ms ↓ -1 ms (-0.2%) 485 ms – 704 ms
Long Tasks 2 → no change 2 – 3
DOM Elements 703 → no change 703 – 707
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 25 → no change 15 – 25
A11y Failures 4 → no change 3 – 4
A11y Failing Nodes 22 → no change 12 – 22

Main thread work

Task Time Share Duration Simulated
script evaluation 34% 165 ms
other 29% 141 ms
style layout 18% 89 ms
parse HTML 8% 39 ms
script parse compile 6% 28 ms
paint composite render 3% 12 ms
garbage collection 3% 12 ms
Total 485 ms

Axe violations axe-core 4.13.0, full rule set

25 violating nodes across 7 rules, 336 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 12 nodes
    Offending elements (5 of 12)
    1. h1 
      <h1 class="hero-brand-title">Packagist</h1>
    2. .hero-brand-subtitle 
      <div class="hero-brand-subtitle">The PHP Package Repository</div>
    3. .hero-search-claim 
      <p class="hero-search-claim">Packagist aggregates public packages that anyone can install with <a href="https://getcomposer.org/">Composer</a>. </p>
    4. a[href$="getcomposer.org/"] 
      <a href="https://getcomposer.org/">Composer</a>
    5. .hero-search-stats > li:nth-child(1) 
      <li><strong>472 426</strong> packages published</li>
  • serious link-in-text-block — Links must be distinguishable without relying on color 8 nodes
    Offending elements (5 of 8)
    1. .col-xl-6:nth-child(1) > div > p:nth-child(4) > a 
      <a href="https://getcomposer.org/doc/01-basic-usage.md#package-versions">Composer documentation</a>
    2. p:nth-child(8) > a:nth-child(1) 
      <a href="https://getcomposer.org/composer.phar">download composer.phar</a>
    3. p:nth-child(8) > a:nth-child(2) 
      <a href="https://getcomposer.org/doc/00-intro.md#installation-linux-unix-macos">installation instructions</a>
    4. p:nth-child(10) > a[href$="explore/"] 
      <a href="/explore/">Browse</a>
    5. p:nth-child(6) > a[href$="login/"] 
      <a href="/login/">log in</a>
  • serious html-has-lang — <html> element must have a lang attribute 1 node
    Offending element
    1. html 
      <html>
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
    Offending element
    1. header > nav 
      <nav class="container">
  • moderate region — All page content should be contained by landmarks 1 node
    Offending element
    1. .wrapper-search 
      <section class="wrapper wrapper-search wrapper-search-hero">
  • serious scrollable-region-focusable — Scrollable region must have keyboard access 1 node
    Offending element
    1. .col-xl-6:nth-child(2) > div > pre 
      <pre><code>{ "name": "your-vendor-name/package-name", "description": "A short description of what your package does", "require": { "php": "&gt;=8.2", "another-vendor/package": "1.*" } }</code></pre>
  • serious tabindex — Elements should not have tabindex greater than zero 1 node
    Offending element
    1. #search_query_query 
      <input type="search" id="search_query_query" name="query" required="required" autocomplete="off" placeholder="Search packages..." tabindex="1" class=" form-control" value="">

Accessibility failures 4 of 21 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 12 nodes
  • link-in-text-block — Links rely on color to be distinguishable. 8 nodes
  • html-has-lang — `<html>` element does not have a `[lang]` attribute 1 node
  • tabindex — Some elements have a `[tabindex]` value greater than 0 1 node

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 1.23 s 135 ms 0 1.23 s 745 ms
2026-09-26 1.37 s 139 ms 0 1.35 s 842 ms
2026-09-19 1.35 s 138 ms 0 1.34 s 861 ms
2026-09-12 1.32 s 138 ms 0 1.32 s 898 ms
2026-09-05 1.38 s 154 ms 0 1.36 s 920 ms
2026-08-29 1.40 s 144 ms 0 1.38 s 921 ms
2026-08-22 2.59 s 194 ms 0 2.51 s 1.71 s
2026-08-15 2.66 s 198 ms 0 2.62 s 1.74 s
2026-08-08 2.66 s 192 ms 0 2.62 s 1.75 s
2026-08-01 2.69 s 193 ms 0 2.64 s 1.75 s
2026-07-25 2.54 s 173 ms 0 2.51 s 1.69 s
2026-07-18 2.18 s 164 ms 0 2.17 s 1.49 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 9, 2026, 3:03 AM UTC 99 1.82 s 0.002 46 ms 478 kB 3/3 ±0 3,444 +38% 44.4s Wayback
Oct 6, 2026, 11:08 PM UTC 96 2.82 s 0.002 41 ms 478 kB 3/3 ±4 4,256 +71% 44.5s Wayback
Oct 3, 2026, 8:56 PM UTC 96 2.67 s 0.002 81 ms 477 kB 3/3 ±13 2,438 -2% 50.2s Wayback
Oct 1, 2026, 2:14 PM UTC 94 2.74 s 0.002 163 ms 478 kB 3/3 ±5 2,478 0% 47.5s Wayback
Sep 29, 2026, 11:10 AM UTC 91 3.19 s 0.002 149 ms 478 kB 3/3 ±6 2,512 +1% 52.5s Wayback
Sep 25, 2026, 12:49 AM UTC 84 3.99 s 0 105 ms 477 kB 3/3 ±14 2,445 -2% 53.9s Wayback
Sep 23, 2026, 12:17 AM UTC 96 2.78 s 0.002 25 ms 477 kB 3/3 ±4 3,081 +24% 45.7s Wayback
Sep 20, 2026, 11:20 PM UTC 97 1.84 s 0.002 162 ms 477 kB 3/3 ±13 2,483 0% 49.1s Wayback
Sep 18, 2026, 1:48 PM UTC 99 1.82 s 0.002 53 ms 478 kB 3/3 ±6 2,906 +17% 45.7s Wayback
Sep 16, 2026, 9:28 AM UTC 97 1.80 s 0.089 44 ms 460 kB 3/3 ±11 3,953 +59% 45.4s Wayback
Sep 14, 2026, 6:13 AM UTC 97 1.80 s 0.089 23 ms 460 kB 3/3 ±3 2,910 +17% 45s Wayback
Sep 11, 2026, 11:25 PM UTC 87 3.81 s 0 87 ms 460 kB 3/3 ±11 2,320 -7% 51.2s Wayback
Sep 9, 2026, 8:53 PM UTC 99 1.83 s 0.063 27 ms 460 kB 3/3 ±15 3,424 +38% 25.9s Wayback
Sep 7, 2026, 7:33 PM UTC 97 1.68 s 0.089 93 ms 507 kB 3/3 ±12 2,504 +1% 27.2s Wayback
Sep 5, 2026, 3:34 AM UTC 95 1.80 s 0.089 173 ms 507 kB 3/3 ±4 2,670 +7% 26.3s Wayback
Sep 4, 2026, 1:00 AM UTC 95 1.82 s 0.089 173 ms 507 kB 3/3 ±12 2,325 -7% 26.1s Wayback
Sep 2, 2026, 11:12 PM UTC 85 3.96 s 0 144 ms 463 kB 3/3 ±8 2,290 -8% 28.9s Wayback
Sep 1, 2026, 8:57 PM UTC 93 1.54 s 0.109 203 ms 464 kB 3/3 ±14 2,445 -2% 26.4s Wayback
Aug 31, 2026, 6:30 PM UTC 93 1.68 s 0.109 212 ms 464 kB 3/3 ±3 2,490 0% 26.4s Wayback
Aug 26, 2026, 7:02 PM UTC 96 1.67 s 0.109 76 ms 463 kB 3/3 ±6 2,994 +20% 25.5s Wayback
Aug 25, 2026, 4:35 PM UTC 85 3.96 s 0 113 ms 463 kB 3/3 ±9 2,354 -5% 29.2s Wayback