speedlify2

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

Charts Measurement runs Embed a score

cssnano.co

https://cssnano.co/

100 100 100 92 ✓AXE –CWV

Ranks Overall #381 Built Awesome #308

Data from Sep 4, 2026, 6:09 PM UTC old Measured once a week · 3 runs since Aug 20, 2026

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

Stack

Cloudflare Hosted by Cloudflare

Lighthouse Scores

100
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.53 s 1.38 s ↑ +150 ms (+10.9%) 1.38 s 1.70 s
CLS Cumulative Layout Shift 0 0 → no change 0 0
TBT Total Blocking Time 0 ms 0 ms → no change 0 ms 0 ms
FCP First Contentful Paint 1.53 s 930 ms ↑ +600 ms (+64.5%) 930 ms 1.55 s
Speed Index 1.53 s 930 ms ↑ +600 ms (+64.5%) 930 ms 1.55 s
TTFB Time to First Byte 616 ms 465 ms ↑ +151 ms (+32.5%) significant 465 ms 616 ms

LCP Subparts lab observed, unthrottled

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

time to first byte 132 ms
element render delay 29 ms
resource load duration 21 ms
resource load delay 9 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 35.6 kB 35.1 kB ↑ +458 B (+1.3%) 35.1 kB 37.1 kB
Requests 11 11 → no change 11 11
Third-party Weight 10.2 kB 9.6 kB ↑ +616 B (+6.4%) 9.6 kB 11.5 kB
Third-party CPU 5 ms 3 ms ↑ +1 ms (+35.3%) significant 3 ms 5 ms
Unused JS 0 B 0 B → no change 0 B 0 B
Unused CSS 0 B 0 B → no change 0 B 0 B

By resource type

  • image 47.1% 16.3 kB · 5 req
  • script 29.5% 10.2 kB · 1 req
  • document 11.6% 4.0 kB · 1 req
  • stylesheet 8.6% 3.0 kB · 1 req
  • other 3.2% 1.1 kB · 2 req

Third parties 1 entities

10.2 kB transferred, 5 ms on the main thread.

Cloudflare script 10.2 kB · 5 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 222 ms 210 ms ↑ +12 ms (+5.9%) 210 ms 240 ms
Long Tasks 0 0 → no change 0 0
DOM Elements 202 202 → no change 202 215
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 0 → no change 0 0
A11y Failures 0 0 → no change 0 0
A11y Failing Nodes 0 0 → no change 0 0

Main thread work

other 112 ms
script evaluation 45 ms
style layout 44 ms
paint composite render 12 ms
parse HTML 8 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 382 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 4, 2026, 6:09 PM UTC 100 1.53 s 0 0 ms 35.6 kB 3/3 ±2 2,270 -8% 23.8s Wayback
Aug 28, 2026, 5:53 PM UTC 100 1.38 s 0 0 ms 35.1 kB 3/3 ±1 2,348 -5% 22.8s Wayback
Aug 20, 2026, 8:28 PM UTC 99 1.70 s 0 0 ms 37.1 kB 3/3 ±4 2,257 -9% 25.4s Wayback

Embed this score

Use this web component to show cssnano.co'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://cssnano.co/"></speedlify2-score>