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 ·

11ty.dev

https://www.11ty.dev/

100 100 100 100 ✓CWV 0AXE

Data from Aug 21, 2026, 5:28 PM UTC — 1h old.

Site Generators, Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 1h

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.

Build Awesome 4.0.0 Built with Build Awesome 4.0.0
Vercel Hosted by Vercel

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 1.05 s good
INP 89 ms good
CLS 0 good

Scores

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

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.21 s — — 1.21 s 1.21 s
CLS Cumulative Layout Shift 0 — — 0 0
TBT Total Blocking Time 9 ms — — 9 ms 9 ms
FCP First Contentful Paint 1.06 s — — 1.06 s 1.06 s
Speed Index 1.06 s — — 1.06 s 1.06 s
TTFB Time to First Byte 610 ms — — 610 ms 610 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 73 ms
resource load delay 35 ms
resource load duration 10 ms
time to first byte 4 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 1.05 s good 93.5% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 89 ms good 94.7% good
CLS CWV 0 good 93.4% good
FCP 1.07 s good 88.9% good
TTFB 528 ms good 85% good

Lab vs field

Lab LCP 1.21 s · field p75 1.05 s · real users are 0.87× 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 1.07 s 88 ms 0 1.07 s 560 ms
2026-08-08 1.10 s 88 ms 0 1.10 s 527 ms
2026-08-01 1.18 s 89 ms 0 1.16 s 593 ms
2026-07-25 1.21 s 93 ms 0 1.19 s 607 ms
2026-07-18 1.19 s 96 ms 0 1.19 s 607 ms
2026-07-11 1.18 s 97 ms 0 1.17 s 604 ms
2026-07-04 1.13 s 95 ms 0 1.14 s 573 ms
2026-06-27 1.10 s 89 ms 0 1.06 s 558 ms
2026-06-20 1.06 s 87 ms 0 994 ms 506 ms
2026-06-13 1.13 s 91 ms 0 953 ms 532 ms
2026-06-06 1.14 s 91 ms 0 942 ms 544 ms
2026-05-30 1.15 s 94 ms 0 938 ms 544 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 92.2 kB — — 92.2 kB 92.2 kB
Requests 11 — — 11 11
Third-party Weight 0 B — — 0 B 0 B
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

document 39.6 kB · 1 req
font 21.9 kB · 2 req
script 16.6 kB · 3 req
stylesheet 9.3 kB · 1 req
image 3.0 kB · 1 req
other 1.7 kB · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 598 ms — — 598 ms 598 ms
Long Tasks 2 — — 2 2
DOM Elements 1,489 — — 1,489 1,489
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

style layout 275 ms
other 146 ms
script evaluation 84 ms
paint composite render 49 ms
parse HTML 42 ms
script parse compile 2 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 2464 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 21, 2026, 5:28 PM UTC 100 1.21 s 0 9 ms 92.2 kB 3/3 ±1 2,471 35.5s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show 11ty.dev'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://www.11ty.dev/"></speedlify-score>