speedlify2

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

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

surge.sh

https://surge.sh/

87 75 96 91 CWV AXE

Data from Aug 21, 2026, 8:40 AM UTC — 10h old.

Web Hosts · 1 measurement · since Aug 21, 2026 · last attempt 10h

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-23 → 2026-08-19). This is what Google measures you on.

LCP 2.53 s needs-improvement
INP 109 ms good
CLS 0.010 good

Scores

87
Performance
no change
75
Accessibility
no change
96
Best Practices
no change
91
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 4.01 s 4.01 s 4.01 s
CLS Cumulative Layout Shift 0.005 0.005 0.005
TBT Total Blocking Time 0 ms 0 ms 0 ms
FCP First Contentful Paint 1.53 s 1.53 s 1.53 s
Speed Index 1.53 s 1.53 s 1.53 s
TTFB Time to First Byte 620 ms 620 ms 620 ms

What LCP is made of

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

element render delay 173 ms
time to first byte 22 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-23 → 2026-08-19). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 2.53 s needs-improvement 74.1% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 109 ms good 89.1% good
CLS CWV 0.010 good 93.7% good
FCP 2.46 s needs-improvement 57.5% good
TTFB 1.40 s needs-improvement 46% good

Lab vs field

Lab LCP 4.01 s · field p75 2.53 s · real users are 0.63× 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 2.52 s 103 ms 0.010 2.45 s 1.41 s
2026-08-08 2.50 s 105 ms 0.010 2.42 s 1.39 s
2026-08-01 2.49 s 104 ms 0.010 2.42 s 1.42 s
2026-07-25 2.50 s 103 ms 0.010 2.42 s 1.44 s
2026-07-18 2.52 s 105 ms 0.010 2.43 s 1.43 s
2026-07-11 2.58 s 103 ms 0.010 2.48 s 1.45 s
2026-07-04 2.54 s 98 ms 0.010 2.44 s 1.42 s
2026-06-27 2.47 s 99 ms 0.010 2.37 s 1.37 s
2026-06-20 2.47 s 97 ms 0 2.39 s 1.40 s
2026-06-13 2.24 s 96 ms 0 2.15 s 1.25 s
2026-06-06 2.25 s 96 ms 0 2.15 s 1.25 s
2026-05-30 2.27 s 96 ms 0 2.18 s 1.27 s

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 1.78 MB 1.78 MB 1.78 MB
Requests 50 50 50
Third-party Weight 215.0 kB 215.0 kB 215.0 kB
Third-party CPU 15 ms 15 ms 15 ms
Unused JS 0 B 0 B 0 B
Unused CSS 0 B 0 B 0 B

By resource type

script 973.7 kB · 9 req
image 400.7 kB · 19 req
font 212.6 kB · 6 req
stylesheet 71.0 kB · 4 req
document 64.1 kB · 2 req
other 61.0 kB · 10 req
third party 1.29 MB · 24 req

Third parties 2 entities

215.0 kB transferred, 15 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Adobe TypeKit 185.2 kB · 3 ms CPU
Google CDN 29.8 kB · 12 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 790 ms 790 ms 790 ms
Long Tasks 1 1 1
DOM Elements 527 527 527
A11y Failures 6 6 6
A11y Failing Nodes 82 82 82

Main thread work

other 291 ms
style layout 257 ms
script evaluation 128 ms
paint composite render 59 ms
parse HTML 31 ms
script parse compile 23 ms

Axe violations axe-core , full rule set

The axe run failed: Navigation timeout of 120000 ms exceeded

Accessibility failures 6 of 25 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. 69 nodes
  • image-alt — Image elements do not have `[alt]` attributes 7 nodes
  • link-in-text-block — Links rely on color to be distinguishable. 3 nodes
  • aria-prohibited-attr — Elements use prohibited ARIA attributes 1 node
  • frame-title — `<frame>` or `<iframe>` elements do not have a title 1 node
  • html-has-lang — `<html>` element does not have a `[lang]` attribute 1 node

Hygiene

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

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache http/1.1

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 21, 2026, 8:40 AM UTC 87 4.01 s 0.005 0 ms 1.78 MB 3/3 ±34 3,263 147.8s

Embed this score

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

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://surge.sh/"></speedlify-score>