speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time.

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css-auditors.com

https://css-auditors.com/

99 98 100 100 ✗AXE –CWV

Ranks Overall #1,031 Built Awesome #796

Data from Sep 4, 2026, 11:46 PM UTC old Measured once a week · 3 runs since Aug 20, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Scoring Calculator · Wayback Machine

Stack

Cloudflare Hosted by Cloudflare

Lighthouse Scores

99
Performance
↓ -1 (-1%)
98
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics Lighthouse, mobile

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Lighthouse
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 1.83 s good ↑ +22 ms (+1.2%) 1.81 s – 1.90 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.70 s good ↑ +780 ms (+85.2%) 915 ms – 1.70 s
Speed Index 1.70 s good ↑ +733 ms (+76.2%) 962 ms – 1.70 s
TTFB Time to First Byte 771 ms good ↑ +179 ms (+30.2%) 592 ms – 771 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is throttled.

time to first byte 312 ms
element render delay 25 ms
resource load duration 15 ms
resource load delay 10 ms

Page weight

Metric Value Change / range Trend
Page Weight 35.0 kB ↑ +529 B (+1.5%) 34.5 kB – 36.1 kB
Requests 12 → no change 12 – 12
Third-party Weight 28.2 kB ↑ +748 B (+2.7%) 27.5 kB – 29.4 kB
Third-party CPU 4 ms ↑ +1 ms (+18.2%) 3 ms – 4 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

  • script 29.1% 10.2 kB · 1 req
  • image 25.9% 9.1 kB · 6 req
  • stylesheet 25.7% 9.0 kB · 1 req
  • document 12.6% 4.4 kB · 1 req
  • other 6.7% 2.4 kB · 3 req

Third parties 2 entities

28.2 kB transferred, 4 ms on the main thread.

cloudfront.net imagestylesheet 18.0 kB · 0 ms CPU
Cloudflare script 10.2 kB · 4 ms CPU

Page health

Metric Value Change / range Trend
Main Thread Work 254 ms ↑ +45 ms (+21.2%) 210 ms – 256 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 112 → no change 112 – 112
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 12 → no change 12 – 12
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

other 124 ms
style layout 58 ms
script evaluation 47 ms
parse HTML 12 ms
paint composite render 11 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

12 violating nodes across 3 rules, 227 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 10 nodes
  • moderate landmark-one-main — Document should have one main landmark 1 node
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node

Accessibility failures 1 of 17 audits

  • landmark-one-main — Document does not have a main landmark. 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
2026-06-06 → 2026-09-05 No data — 14 weeks under the CrUX reporting threshold
2026-05-30 4.92 s — 0.480 4.17 s 1.95 s
2026-05-23 4.92 s — 0.480 4.16 s 1.94 s
2026-05-16 4.93 s — 0.480 4.16 s 1.96 s
2026-05-09 4.93 s — 0.470 4.16 s 1.95 s
2026-03-21 → 2026-05-02 No data — 7 weeks under the CrUX reporting threshold

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 4, 2026, 11:46 PM UTC 99 1.83 s 0 0 ms 35.0 kB 3/3 ±1 2,691 +8% 24.5s Wayback
Aug 28, 2026, 11:25 PM UTC 100 1.81 s 0 0 ms 34.5 kB 3/3 ±1 2,999 +21% 22.5s Wayback
Aug 20, 2026, 8:35 PM UTC 99 1.90 s 0 0 ms 36.1 kB 3/3 ±1 2,518 +1% 23.8s Wayback

Embed this score

Use this web component to show css-auditors.com's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://css-auditors.com/"></speedlify2-score>