speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time — measured continuously.

Measurement runs · Embed a score ·

cloudflare.com

https://www.cloudflare.com/

63 96 73 92 –AXE ✗CWV

Data from Aug 23, 2026, 12:38 PM UTC 9h old

Web Hosts #15 · 3 measurements · since Aug 21, 2026

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-25 → 2026-08-21). This is what Google measures you on.

LCP 2.48 s good
INP 278 ms needs-improvement
CLS 0 good

Scores

63
Performance
↑ +2 (+3.3%)
96
Accessibility
no change
73
Best Practices
↓ -4 (-5.2%)
92
SEO
no change

Filmstrip Lighthouse, mobile

How the page drew during the measured load, at 8 points across 3.00 s.

  1. 375 ms
  2. 750 ms
  3. 1.13 s
  4. 1.50 s
  5. 1.88 s
  6. 2.25 s
  7. 2.63 s
  8. 3.00 s

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 3.36 s 4.15 s ↓ -787 ms (-19%) 3.06 s 4.15 s
CLS Cumulative Layout Shift 0 0 → no change 0 0
TBT Total Blocking Time 1.10 s 953 ms ↑ +147 ms (+15.4%) significant 953 ms 1.10 s
FCP First Contentful Paint 2.75 s 2.78 s ↓ -34 ms (-1.2%) 2.69 s 2.78 s
Speed Index 3.57 s 2.78 s ↑ +787 ms (+28.3%) significant 2.69 s 3.57 s
TTFB Time to First Byte 494 ms 470 ms ↑ +24 ms (+5.1%) 470 ms 494 ms

What LCP is made of observed, unthrottled

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

Measured on the trace before throttling is modelled, so these are real durations that will not sum to the 3.36 s above — that figure is a simulation of the same load on a slow phone and connection. Read these for the proportions: which phase dominates.

resource load delay 561 ms
element render delay 264 ms
time to first byte 9 ms
resource load duration 4 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-25 → 2026-08-21). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 2.48 s good 75.1% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 278 ms needs-improvement 65.5% good
CLS CWV 0 good 96.9% good
FCP 1.88 s needs-improvement 73.3% good
TTFB 525 ms good 83.3% good

Lab vs field

Lab LCP 3.36 s · field p75 2.48 s · real users are 0.74× faster than the lab.

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-08-15 2.47 s 274 ms 0 1.88 s 520 ms
2026-08-08 2.48 s 270 ms 0 1.89 s 520 ms
2026-08-01 2.49 s 265 ms 0 1.90 s 534 ms
2026-07-25 2.50 s 264 ms 0 1.91 s 643 ms
2026-07-18 2.50 s 262 ms 0 1.90 s 720 ms
2026-07-11 2.57 s 261 ms 0 1.89 s 779 ms
2026-07-04 2.65 s 263 ms 0 1.93 s 816 ms
2026-06-27 2.79 s 266 ms 0 1.99 s 826 ms
2026-06-20 2.90 s 269 ms 0 2.06 s 847 ms
2026-06-13 2.93 s 274 ms 0 2.10 s 847 ms
2026-06-06 2.95 s 294 ms 0 2.12 s 864 ms
2026-05-30 2.92 s 343 ms 0 2.16 s 858 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 2.55 MB 2.60 MB ↓ -48.3 kB (-1.9%) 2.55 MB 2.60 MB
Requests 175 160 ↑ +15 (+9.4%) 160 175
Third-party Weight 248 kB 311 kB ↓ -61.0 kB (-20.1%) 248 kB 311 kB
Third-party CPU 88 ms 79 ms ↑ +9 ms (+11.2%) 65 ms 88 ms
Unused JS 894 kB 962 kB ↓ -67.2 kB (-7.1%) 894 kB 962 kB
Unused CSS 0 B 0 B → no change 0 B 0 B

By resource type

script 1.86 MB · 83 req
image 419 kB · 45 req
document 111 kB · 4 req
stylesheet 84.2 kB · 3 req
other 49.7 kB · 35 req
font 28.8 kB · 3 req
third party 252 kB · 50 req

Third parties 12 entities

248 kB transferred, 88 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Tag Manager 161 kB · 19 ms CPU
The Trade Desk 30.8 kB · 15 ms CPU
DemandBase 20.7 kB · 29 ms CPU
Twitter Online Conversion Tracking 14.4 kB · 7 ms CPU
Cloudflare 11.4 kB · 9 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 50.06 s 8.79 s ↑ +41277 ms (+469.7%) 8.79 s 50.06 s
Long Tasks 20 20 → no change 20 20
DOM Elements 3,003 2,986 ↑ +17 (+0.6%) 2,986 3,003
A11y Failures 1 1 → no change 1 1
A11y Failing Nodes 8 8 → no change 8 8

Main thread work

other 23.50 s
style layout 10.94 s
script evaluation 9.27 s
paint composite render 5.55 s
script parse compile 446 ms
parse HTML 209 ms
garbage collection 137 ms

Axe violations axe-core , full rule set

The axe run failed: Navigation timeout of 120000 ms exceeded

Accessibility failures 1 of 26 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 8 nodes

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3 1 console error

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 23, 2026, 12:38 PM UTC 63 3.36 s 0 1.10 s 2.55 MB 3/3 ±14 2,453 374.4s
Aug 22, 2026, 12:36 PM UTC 61 4.15 s 0 953 ms 2.60 MB 3/3 ±13 2,420 306.1s
Aug 21, 2026, 11:31 AM UTC 68 3.06 s 0 975 ms 2.55 MB 3/3 ±4 2,467 309.6s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show cloudflare.com's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify2-score.js component code into your site! 

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