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 ·

npmx.dev

https://npmx.dev/

77 100 96 100 AXE CWV

Data from Aug 25, 2026, 4:36 PM UTC 13h old

Overall #775 Package Managers #1 · 1 measurement · since Aug 25, 2026

Stack

Detected on the same page load as the accessibility pass — the generator from <meta name="generator"> or the shape of the page, the host from response headers.

Nuxt Built with Nuxt
Vercel Hosted by Vercel

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-27 → 2026-08-23). This is what Google measures you on.

LCP 1.08 s good
INP 182 ms good
CLS 0.010 good

Scores

77
Performance
no change
100
Accessibility
no change
96
Best Practices
no change
100
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 4.90 s 4.90 s 4.90 s
CLS Cumulative Layout Shift 0.003 0.003 0.003
TBT Total Blocking Time 202 ms 202 ms 202 ms
FCP First Contentful Paint 2.13 s 2.13 s 2.13 s
Speed Index 2.13 s 2.13 s 2.13 s
TTFB Time to First Byte 628 ms 628 ms 628 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 4.90 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.

element render delay 438 ms
time to first byte 13 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-27 → 2026-08-23). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 1.08 s good 95.8% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 182 ms good 78.5% good
CLS CWV 0.010 good 88.2% good
FCP 885 ms good 95.8% good
TTFB 442 ms good 89% good

Lab vs field

Lab LCP 4.90 s · field p75 1.08 s · real users are 0.22× faster than the lab.

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-08-22 1.08 s 177 ms 0.010 887 ms 450 ms
2026-08-15 1.15 s 187 ms 0.010 910 ms 495 ms
2026-08-08 1.14 s 194 ms 0.010 903 ms 480 ms
2026-08-01 1.22 s 206 ms 0.010 910 ms 467 ms
2026-07-25 1.26 s 217 ms 0.010 917 ms 463 ms
2026-07-18 1.22 s 217 ms 0.020 917 ms 447 ms
2026-07-11 1.32 s 214 ms 0.010 968 ms 521 ms
2026-07-04 1.34 s 208 ms 0.010 1.00 s 521 ms
2026-06-27 1.44 s 203 ms 0.020 985 ms 455 ms
2026-06-20 1.39 s 204 ms 0.010 978 ms 473 ms
2026-06-13 1.27 s 201 ms 0.010 945 ms 441 ms
2026-06-06 1.25 s 196 ms 0.010 922 ms 441 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 12.92 MB 12.92 MB 12.92 MB
Requests 159 159 159
Third-party Weight 11.39 MB 11.39 MB 11.39 MB
Third-party CPU 0 ms 0 ms 0 ms
Unused JS 56.9 kB 56.9 kB 56.9 kB
Unused CSS 45.8 kB 45.8 kB 45.8 kB

By resource type

image 11.58 MB · 10 req
other 744 kB · 39 req
script 413 kB · 88 req
font 115 kB · 3 req
stylesheet 58.4 kB · 10 req
document 13.8 kB · 1 req
third party 11.39 MB · 5 req

Third parties 1 entities

11.39 MB transferred, 0 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

tenor.com 11.39 MB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 2.52 s 2.52 s 2.52 s
Long Tasks 7 7 7
DOM Elements 373 373 373
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 0 0 0
A11y Failures 0 0 0
A11y Failing Nodes 0 0 0

Main thread work

other 1.10 s
script evaluation 948 ms
style layout 321 ms
parse HTML 78 ms
paint composite render 37 ms
script parse compile 24 ms
garbage collection 15 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 452 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

Hygiene

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

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

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 25, 2026, 4:36 PM UTC 77 4.90 s 0.003 202 ms 12.92 MB 3/3 ±10 2,367 31.6s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show npmx.dev'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://npmx.dev/"></speedlify2-score>