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

gitter.im

https://gitter.im/

89PERF 81A11Y 96BEST 73SEO ✗AXE ✓CWV

Ranks Overall #1,641 Astro Showcase #182

Data from Oct 2, 2026, 6:56 AM 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

Lighthouse Scores LAB Simulated

89
Performance
no change
81
Accessibility
no change
96
Best Practices
no change
73
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 (2026-09-02 → 2026-09-29), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 3.55 s needs work — 3.55 s – 3.55 s 1.80 s good 88.3% 6.3% 5.5%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0 good — 0 – 0 0 good 99.1% 0.4% 0.5%
TBT Total Blocking Time 0 ms good — 0 ms – 0 ms n/a —
FCP First Contentful Paint 1.78 s good — 1.78 s – 1.78 s 1.79 s good 75.5% 15.8% 8.7%
Speed Index 2.63 s good — 2.63 s – 2.63 s n/a —
TTFB Time to First Byte 701 ms good — 701 ms – 701 ms 1.18 s needs work 51.3% 36.7% 12%

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 1.27 s
time to first byte 94 ms

LCP LAB Simulated vs LCP FIELD

Lab 3.55 s
Field p75 1.80 s

The lab LCP is 1.97× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 1.40 MB — 1.40 MB – 1.40 MB
Requests 27 — 27 – 27
Third-party Weight 0 B — 0 B – 0 B
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 97.1% 1.36 MB 20
stylesheet 1.6% 22.8 kB 2
document 0.7% 9.3 kB 1
other 0.6% 8.5 kB 1
Total 1.40 MB 27

Page health

Metric Value Change / range Trend
Main Thread Work 648 ms — 648 ms – 648 ms
Long Tasks 0 — 0 – 0
DOM Elements 216 — 216 – 216
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 39 — 39 – 39
A11y Failures 3 — 3 – 3
A11y Failing Nodes 25 — 25 – 25

Main thread work

Task Time Share Duration Simulated
other 55% 355 ms
style layout 27% 176 ms
paint composite render 13% 86 ms
script evaluation 3% 17 ms
parse HTML 2% 14 ms
script parse compile 0% 1 ms
Total 648 ms

Axe violations axe-core 4.13.0, full rule set

39 violating nodes across 4 rules, 293 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 16 nodes
    Offending elements (5 of 16)
    1. .button--kind-primary > .sign-in-short-text 
      <span class="sign-in-short-text astro-J7PV25F6">Sign-in</span>
    2. .apps-main-description 
      <p class="apps-main-description astro-J7PV25F6"> The Gitter webapp is available in all modern browsers, and there are a variety of Matrix clients available. We recommend Element for desktop, Android …
    3. .app-button[href$="app.gitter.im/"] 
      <a class="app-button astro-J7PV25F6" href="https://app.gitter.im/">Gitter Web</a>
    4. a[href$="download"] 
      <a class="app-button astro-J7PV25F6" href="https://element.io/download">Download Element</a>
    5. .apps-content-wrapper > p:nth-child(4) 
      <p class="astro-J7PV25F6"> After downloading Element, be sure to specify <code class="astro-J7PV25F6">gitter.im</code> as the homeserver. </p>
  • moderate region — All page content should be contained by landmarks 14 nodes
    Offending elements (5 of 14)
    1. .logo-cluster 
      <a class="logo-cluster astro-SUJJZJ7K astro-RI4HVL46" href="/">
    2. .sign-in-short-text.astro-SUJJZJ7K 
      <span class="sign-in-short-text astro-SUJJZJ7K">Sign-in</span>
    3. .intro-title-heading 
      <h1 class="intro-title-heading astro-J7PV25F6">Where communities thrive</h1>
    4. .gitter-element-news-link-text 
      <span class="gitter-element-news-link-text astro-J7PV25F6"> Latest news<br class="astro-J7PV25F6"> Gitter has migrated to Matrix </span>
    5. .intro-description 
      <p class="intro-description astro-J7PV25F6"> Gitter is a chat and networking platform that helps to manage, grow and connect communities through messaging, content and discovery. </p>
  • critical image-alt — Images must have alternative text 8 nodes
    Offending elements (5 of 8)
    1. .apps-screenshot-image 
      <img class="apps-screenshot-image astro-J7PV25F6" srcset="/images/gitter-apps.png, /images/gitter-apps@2x.png 2x" src="/images/gitter-apps.png">
    2. .is-active > .testimonial-image-wrapper > img 
      <img src="/images/testimonials/testimonial-chrisvnicholson.jpg" class="astro-J7PV25F6">
    3. blockquote:nth-child(2) > .testimonial-image-wrapper > img 
      <img src="/images/testimonials/testimonial-dreadknight.jpg" class="astro-J7PV25F6">
    4. blockquote:nth-child(3) > .testimonial-image-wrapper > img 
      <img src="/images/testimonials/testimonial-ttmc.jpg" class="astro-J7PV25F6">
    5. blockquote:nth-child(4) > .testimonial-image-wrapper > img 
      <img src="/images/testimonials/testimonial-krishnasrinivas.jpg" class="astro-J7PV25F6">
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en">

Accessibility failures 3 of 16 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 16 nodes
  • image-alt — Image elements do not have `[alt]` attributes 8 nodes
  • landmark-one-main — Document does not have a main landmark. 1 node

Best Practices failures 1 of 19 audits

  • errors-in-console — Browser errors were logged to the console 3 items

SEO failures 3 of 8 audits

  • meta-description — Document does not have a meta description
  • link-text — Links do not have descriptive text 2 items
  • image-alt — Image elements do not have `[alt]` attributes 8 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 3 console errors

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 1.79 s 95 ms 0 1.78 s 1.12 s
2026-09-19 1.79 s 105 ms 0 1.78 s 1.21 s
2026-09-12 1.78 s 109 ms 0 1.78 s 1.27 s
2026-09-05 1.84 s 111 ms 0 1.83 s 1.31 s
2026-08-29 1.91 s 121 ms 0 1.90 s 1.48 s
2026-08-22 1.99 s 121 ms 0 1.94 s 1.41 s
2026-08-15 2.01 s 121 ms 0 1.89 s 1.30 s
2026-08-08 2.02 s 119 ms 0 2.01 s 1.36 s
2026-08-01 1.84 s — 0 1.84 s 1.23 s
2026-07-25 1.90 s — 0 1.86 s 1.25 s
2026-07-18 1.93 s 123 ms 0 1.89 s 1.40 s
2026-07-11 1.89 s 122 ms 0 1.83 s 1.34 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 6:56 AM UTC 89 3.55 s 0 0 ms 1.40 MB 3/3 ±23 2,479 0% 27.5s Wayback