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 ·

deno.com/deploy

https://deno.com/deploy

45 100 96 100 CWV 2AXE

Data from Aug 20, 2026, 8:28 PM UTC — 22h old.

Web Hosts · 1 measurement · since Aug 20, 2026 · last attempt 22h

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.

de Hosted by deployd

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-22 → 2026-08-18). This is what Google measures you on.

LCP 3.11 s needs-improvement
INP 238 ms needs-improvement
CLS 0.630 poor

Scores

45
Performance
no change
100
Accessibility
no change
96
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 9.65 s 9.65 s 9.65 s
CLS Cumulative Layout Shift 0.614 0.614 0.614
TBT Total Blocking Time 13 ms 13 ms 13 ms
FCP First Contentful Paint 3.21 s 3.21 s 3.21 s
Speed Index 3.89 s 3.89 s 3.89 s
TTFB Time to First Byte 661 ms 661 ms 661 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.

resource load duration 226 ms
element render delay 188 ms
resource load delay 103 ms
time to first byte 67 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-22 → 2026-08-18). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 3.11 s needs-improvement 65% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 238 ms needs-improvement 68.9% good
CLS CWV 0.630 poor 61% good
FCP 2.54 s needs-improvement 53.5% good
TTFB 1.31 s needs-improvement 46.8% good

Lab vs field

Lab LCP 9.65 s · field p75 3.11 s · real users are 0.32× 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 3.08 s 235 ms 0.620 2.46 s 1.30 s
2026-08-08 3.11 s 247 ms 0.630 2.52 s 1.32 s
2026-08-01 3.24 s 254 ms 0.610 2.53 s 1.38 s
2026-07-25 3.15 s 249 ms 0.620 2.49 s 1.38 s
2026-07-18 3.29 s 244 ms 0.640 2.66 s 1.42 s
2026-07-11 3.23 s 252 ms 0.650 2.71 s 1.43 s
2026-07-04 3.27 s 233 ms 0.670 2.66 s 1.38 s
2026-06-27 3.22 s 217 ms 0.650 2.61 s 1.37 s
2026-06-20 3.17 s 185 ms 0.630 2.51 s 1.42 s
2026-06-13 3.41 s 164 ms 0.630 2.60 s 1.78 s
2026-06-06 3.74 s 182 ms 0.630 2.97 s 2.35 s
2026-05-30 4.23 s 170 ms 0.620 3.12 s 2.55 s

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 4.36 MB 4.36 MB 4.36 MB
Requests 65 65 65
Third-party Weight 0 B 0 B 0 B
Third-party CPU 0 ms 0 ms 0 ms
Unused JS 157.7 kB 157.7 kB 157.7 kB
Unused CSS 47.8 kB 47.8 kB 47.8 kB

By resource type

media 1.97 MB · 2 req
image 1.29 MB · 20 req
font 407.2 kB · 5 req
script 307.5 kB · 25 req
stylesheet 205.3 kB · 4 req
document 179.3 kB · 1 req
other 5.2 kB · 2 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 2.06 s 2.06 s 2.06 s
Long Tasks 3 3 3
DOM Elements 916 916 916
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 2 2 2
A11y Failures 0 0 0
A11y Failing Nodes 0 0 0

Main thread work

other 1.05 s
style layout 518 ms
script evaluation 292 ms
paint composite render 102 ms
parse HTML 52 ms
garbage collection 35 ms
script parse compile 19 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 1145 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.

  • serious nested-interactive — Interactive controls must not be nested 1 node
  • moderate region — All page content should be contained by landmarks 1 node

Hygiene

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

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 2 console errors

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 20, 2026, 8:28 PM UTC 45 9.65 s 0.614 13 ms 4.36 MB 3/3 ±19 2,486 48.7s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show deno.com/deploy'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://deno.com/deploy"></speedlify-score>