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 ·

checkthisout.today

https://checkthisout.today/

96 100 100 100 –CWV 1AXE

Data from Aug 20, 2026, 7:36 PM UTC — 23h old.

Built Awesome · 1 measurement · since Aug 20, 2026 · last attempt 23h

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.

Eleventy Built with Eleventy
Netlify Hosted by Netlify

Scores

96
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 2.65 s — — 2.65 s 2.65 s
CLS Cumulative Layout Shift 0.011 — — 0.011 0.011
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 1.69 s — — 1.69 s 1.69 s
Speed Index 1.69 s — — 1.69 s 1.69 s
TTFB Time to First Byte 630 ms — — 630 ms 630 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 75 ms
element render delay 48 ms
resource load delay 36 ms
time to first byte 30 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 435.3 kB — — 435.3 kB 435.3 kB
Requests 24 — — 24 24
Third-party Weight 78.4 kB — — 78.4 kB 78.4 kB
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

image 328.7 kB · 12 req
font 78.4 kB · 4 req
script 14.5 kB · 2 req
document 10.9 kB · 1 req
other 2.3 kB · 2 req
stylesheet 500 B · 1 req
third party 78.4 kB · 4 req

Third parties 1 entities

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

Adobe TypeKit 78.4 kB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 308 ms — — 308 ms 308 ms
Long Tasks 0 — — 0 0
DOM Elements 96 — — 96 96
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 1 — — 1 1
A11y Failures 0 — — 0 0
A11y Failing Nodes 0 — — 0 0

Main thread work

other 129 ms
style layout 77 ms
script evaluation 69 ms
paint composite render 19 ms
parse HTML 11 ms
script parse compile 5 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 156 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.

  • 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

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, 7:36 PM UTC 96 2.65 s 0.011 0 ms 435.3 kB 3/3 ±6 4,422 21.3s

Embed this score

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