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

firebase.google.com/products/hosting

https://firebase.google.com/products/hosting

56PERF 95A11Y 96BEST 85SEO ✗AXE !CWV

Ranks Overall #1,692 Developer Tooling #80 Web Hosts #17

Data from Oct 7, 2026, 10:51 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

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

Stack

Uses Lit 3.3.3Lit 3.3.3
Google Frontend Hosted by Google Frontend

Filmstrip LAB Throttled

How the page drew during the measured load, at 9 points across 9.59 s. Compare this filmstrip against another site.

  1. 1.20 s
  2. 2.40 s
  3. 2.89 s
  4. 4.79 s
  5. 5.99 s
  6. 7.19 s
  7. 7.88 s
  8. 8.39 s
  9. 9.59 s

Lighthouse Scores LAB Simulated

56
Performance
↑ +13 (+30.2%)
95
Accessibility
no change
96
Best Practices
no change
85
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 (2026-09-08 → 2026-10-05), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 5.01 s poor ↓ -3930 ms (-44%) significant 4.56 s – 8.94 s 3.04 s needs work 61.7% 25.7% 12.7%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 206 ms needs work 73.6% 24.1% 2.4%
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0 0 good 96.7% 1.9% 1.4%
TBT Total Blocking Time 830 ms poor ↑ +75 ms (+9.9%) 371 ms – 1.04 s n/a —
FCP First Contentful Paint 3.06 s poor ↓ -1981 ms (-39.3%) significant 3.00 s – 5.04 s 2.93 s needs work 43.6% 33% 23.4%
Speed Index 3.06 s good ↓ -2570 ms (-45.7%) significant 3.06 s – 5.63 s n/a —
TTFB Time to First Byte 750 ms good ↑ +140 ms (+23%) significant 610 ms – 958 ms 2.09 s poor 6.2% 56.2% 37.6%

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 7.03 s
time to first byte 858 ms

LCP LAB Simulated vs LCP FIELD

Lab 5.01 s
Field p75 3.04 s

The lab LCP is 1.65× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 1.94 MB ↑ +425.7 kB (+29%) significant 1.50 MB – 2.01 MB
Requests 78 ↓ -3 (-3.7%) 76 – 83
Third-party Weight 1.84 MB ↓ -1093.3 kB (-37.8%) significant 1.61 MB – 2.96 MB
Third-party CPU 452 ms ↑ +35 ms (+8.5%) 316 ms – 498 ms
Unused JS 561 kB ↑ +167.3 kB (+44%) significant 381 kB – 565 kB
Unused CSS 203 kB ↑ +8 B 203 kB – 204 kB

By resource type

Type Transfer Share Size Requests
script 60.1% 1.17 MB 50
image 16.5% 320 kB 11
font 10.2% 197 kB 3
stylesheet 8.5% 165 kB 5
document 4.6% 88.4 kB 2
other 0.1% 1.4 kB 7
Total 1.94 MB 78

Third parties 3 entities

Entity Transfer Size Main thread Simulated
Google CDN scriptstylesheet 854 kB 126 ms
Google Tag Manager script 780 kB 327 ms
Google Fonts font 205 kB 0 ms
Total 1.84 MB 452 ms

Without JavaScript

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

Scripts disabled
As rendered

0.8% 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 3.82 s ↑ +731 ms (+23.7%) 2.53 s – 5.58 s
Long Tasks 13 ↑ +2 (+18.2%) 10 – 20
DOM Elements 762 → no change 762 – 762
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 7 → no change 7 – 7
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 4 → no change 4 – 4

Main thread work

Task Time Share Duration Simulated
script evaluation 49% 1.88 s
other 21% 804 ms
style layout 13% 481 ms
script parse compile 10% 365 ms
parse HTML 3% 128 ms
paint composite render 3% 101 ms
garbage collection 1% 57 ms
Total 3.82 s

Axe violations axe-core 4.13.0, full rule set

7 violating nodes across 4 rules, 723 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • critical image-alt — Images must have alternative text 4 nodes
    Offending elements
    1. .content-wrapper:nth-child(2) > .no-right-container-padding.side-side.bottom-padding > .side-side-wrapper > .side-side-wrapper__right-container > .content > .content__illo > img[loading="lazy"] 
      <img class="" loading="lazy" src="/static/images/products/hosting/hosting-1.png">
    2. .content-wrapper:nth-child(3) > .side-side.bottom-padding.top-padding > .side-side-wrapper > .side-side-wrapper__left-container > .content > .content__illo > img[loading="lazy"] 
      <img class="" loading="lazy" src="/static/images/products/hosting/hosting-2.png">
    3. .content-wrapper:nth-child(4) > .no-right-container-padding.side-side.bottom-padding > .side-side-wrapper > .side-side-wrapper__right-container > .content > .content__illo > img[loading="lazy"] 
      <img class="" loading="lazy" src="/static/images/products/hosting/hosting-3.png">
    4. .content-wrapper:nth-child(5) > .side-side.bottom-padding.top-padding > .side-side-wrapper > .side-side-wrapper__left-container > .content > .content__illo > img[loading="lazy"] 
      <img class="" loading="lazy" src="/static/images/products/hosting/hosting-4.png">
  • moderate landmark-main-is-top-level — Main landmark should not be contained in another landmark 1 node
    Offending element
    1. .devsite-article-body > main 
      <main>
  • moderate landmark-no-duplicate-main — Document should not have more than one main landmark 1 node
    Offending element
    1. #main-content 
      <main role="main" id="main-content" class="devsite-main-content">
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
    Offending element
    1. #main-content 
      <main role="main" id="main-content" class="devsite-main-content">

Accessibility failures 1 of 29 audits

  • image-alt — Image elements do not have `[alt]` attributes 4 nodes

Best Practices failures 1 of 17 audits

  • errors-in-console — Browser errors were logged to the console 2 items

SEO failures 2 of 10 audits

  • link-text — Links do not have descriptive text 3 items
  • image-alt — Image elements do not have `[alt]` attributes 4 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 2 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 3.05 s 202 ms 0 2.94 s 2.12 s
2026-09-19 3.05 s 193 ms 0 2.95 s 2.12 s
2026-09-12 3.05 s 194 ms 0 2.95 s 2.13 s
2026-09-05 3.06 s 195 ms 0 2.98 s 2.16 s
2026-08-29 3.05 s 195 ms 0 2.96 s 2.15 s
2026-08-22 3.03 s 195 ms 0 2.93 s 2.13 s
2026-08-15 3.00 s 190 ms 0 2.87 s 2.13 s
2026-08-08 2.92 s 192 ms 0 2.81 s 2.08 s
2026-08-01 2.83 s 202 ms 0 2.73 s 2.01 s
2026-07-25 2.79 s 206 ms 0 2.69 s 1.99 s
2026-07-18 2.77 s 210 ms 0 2.68 s 1.91 s
2026-07-11 2.78 s 214 ms 0 2.68 s 1.86 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 7, 2026, 10:51 PM UTC 56 5.01 s 0 830 ms 1.94 MB 3/3 ±8 2,461 -1% 80.7s Wayback
Oct 5, 2026, 6:01 PM UTC 43 8.94 s 0 755 ms 1.50 MB 3/3 ±9 2,505 +1% 82s Wayback
Oct 1, 2026, 12:30 AM UTC 55 4.96 s 0 780 ms 1.95 MB 3/3 ±3 2,460 -1% 77.7s Wayback
Sep 29, 2026, 12:05 AM UTC 51 5.84 s 0 648 ms 1.63 MB 3/3 ±7 2,486 0% 84.7s Wayback
Sep 25, 2026, 4:52 PM UTC 53 5.02 s 0 817 ms 1.95 MB 3/3 ±6 2,507 +1% 81.9s Wayback
Sep 23, 2026, 10:56 AM UTC 64 4.96 s 0 453 ms 1.94 MB 3/3 ±2 3,402 +37% 75.1s Wayback
Sep 21, 2026, 7:45 AM UTC 56 4.93 s 0 736 ms 2.01 MB 3/3 ±5 2,407 -3% 81.5s Wayback
Sep 18, 2026, 5:39 PM UTC 60 5.37 s 0 520 ms 1.95 MB 3/3 ±5 2,922 +18% 74.9s Wayback
Sep 16, 2026, 9:20 AM UTC 55 4.97 s 0 761 ms 1.94 MB 3/3 ±5 2,493 0% 82.8s Wayback
Sep 14, 2026, 6:00 AM UTC 63 4.95 s 0 458 ms 2.00 MB 3/3 ±8 2,881 +16% 74.3s Wayback
Sep 11, 2026, 11:32 PM UTC 55 4.99 s 0 883 ms 1.94 MB 3/3 ±8 2,302 -7% 81.5s Wayback
Sep 9, 2026, 8:33 PM UTC 56 5.02 s 0 686 ms 1.94 MB 3/3 ±6 2,300 -8% 40.9s Wayback
Sep 7, 2026, 7:07 PM UTC 55 5.39 s 0 640 ms 1.94 MB 3/3 ±1 2,348 -6% 39.2s Wayback
Sep 5, 2026, 3:59 PM UTC 55 5.47 s 0 738 ms 1.94 MB 3/3 ±6 2,504 +1% 38.5s Wayback
Sep 4, 2026, 11:00 AM UTC 54 4.56 s 0 828 ms 1.94 MB 2/3 ±0 2,497 0% 32.1s Wayback
Sep 3, 2026, 6:53 AM UTC 54 4.67 s 0 1.04 s 2.01 MB 3/3 ±7 1,904 -23% 43s Wayback
Sep 2, 2026, 3:03 AM UTC 52 4.97 s 0 754 ms 1.94 MB 3/3 ±13 2,485 0% 43.1s Wayback
Aug 31, 2026, 9:29 PM UTC 50 5.40 s 0 755 ms 1.63 MB 3/3 ±6 2,500 +1% 41.9s Wayback
Aug 27, 2026, 4:17 AM UTC 62 5.07 s 0 489 ms 2.00 MB 3/3 ±6 3,010 +21% 35.3s Wayback
Aug 26, 2026, 3:03 AM UTC 58 4.85 s 0 513 ms 1.99 MB 3/3 ±21 2,984 +20% 39.6s Wayback
Aug 25, 2026, 2:58 AM UTC 62 5.95 s 0 418 ms 1.93 MB 3/3 ±15 3,309 +33% 40.7s Wayback
Aug 24, 2026, 1:13 AM UTC 59 5.00 s 0 678 ms 1.93 MB 3/3 ±7 2,323 -7% 41s Wayback
Aug 22, 2026, 11:20 PM UTC 56 5.02 s 0 776 ms 1.93 MB 3/3 ±8 2,463 -1% 40.7s Wayback
Aug 21, 2026, 10:23 PM UTC 61 5.03 s 0 371 ms 1.99 MB 3/3 ±5 3,025 +22% 35.8s Wayback
Aug 20, 2026, 9:34 PM UTC 53 8.42 s 0 386 ms 1.50 MB 3/3 ±4 3,198 +29% 39.8s Wayback