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 ·

tw.11ty.blades.ninja

https://tw.11ty.blades.ninja/

Data from Aug 21, 2026, 4:48 PM UTC — 1h old.

Build Awesome Starters · 1 measurement · since Aug 21, 2026 · last attempt 1h

This URL redirects to https://tw.build.blades.ninja/.

Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. Not yet confirmed as a move; it needs to lead to the same place on several consecutive runs first.

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.

Netlify Hosted by Netlify

Scores

88
Performance
no change
77
Accessibility
no change
96
Best Practices
no change
82
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 2.75 s — — 2.75 s 2.75 s
CLS Cumulative Layout Shift 0.158 — — 0.158 0.158
TBT Total Blocking Time 86 ms — — 86 ms 86 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 621 ms — — 621 ms 621 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 117 ms
time to first byte 44 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 326.5 kB — — 326.5 kB 326.5 kB
Requests 30 — — 30 30
Third-party Weight 315.0 kB — — 315.0 kB 315.0 kB
Third-party CPU 68 ms — — 68 ms 68 ms
Unused JS 139.1 kB — — 139.1 kB 139.1 kB
Unused CSS 0 B — — 0 B 0 B

By resource type

script 297.7 kB · 3 req
image 16.9 kB · 15 req
stylesheet 6.1 kB · 1 req
document 5.2 kB · 3 req
other 592 B · 8 req
third party 316.2 kB · 26 req

Third parties 5 entities

315.0 kB transferred, 68 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Tag Manager 293.3 kB · 67 ms CPU
shields.io 12.4 kB · 0 ms CPU
gstatic.com 4.5 kB · 0 ms CPU
zgo.at 4.4 kB · 2 ms CPU
goatcounter.com 380 B · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 724 ms — — 724 ms 724 ms
Long Tasks 3 — — 3 3
DOM Elements 174 — — 174 174
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 18 — — 18 18
A11y Failures 5 — — 5 5
A11y Failing Nodes 16 — — 16 16

Main thread work

script evaluation 265 ms
other 178 ms
style layout 156 ms
script parse compile 67 ms
paint composite render 46 ms
parse HTML 11 ms

Axe violations axe-core 4.13.0, full rule set

18 violating nodes across 7 rules, 373 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.

  • critical image-alt — Images must have alternative text 8 nodes
  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 4 nodes
  • serious object-alt — <object> elements must have alternative text 2 nodes
  • minor empty-table-header — Table header text should not be empty 1 node
  • moderate heading-order — Heading levels should only increase by one 1 node
  • serious link-name — Links must have discernible text 1 node
  • moderate region — All page content should be contained by landmarks 1 node

Accessibility failures 5 of 24 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.

  • image-alt — Image elements do not have `[alt]` attributes 8 nodes
  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 4 nodes
  • object-alt — `<object>` elements do not have alternate text 2 nodes
  • heading-order — Heading elements are not in a sequentially-descending order 1 node
  • link-name — Links do not have a discernible name 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 1 console error

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, 4:48 PM UTC 88 2.75 s 0.158 86 ms 326.5 kB 3/3 ±17 3,010 26.9s

Embed this score

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