11ty-serene.vercel.app

https://11ty-serene.vercel.app/

Ranks Overall #1,373 Build Awesome Starters #149

Data from Oct 3, 2026, 7:41 AM UTC 5d old Measured once a week · 7 runs since Aug 20, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 4,381, 76% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Hosted by Vercel

Lighthouse Scores LAB Simulated

Performance

↑ +12 (+13.8%)

Accessibility

no change

100

Best Practices

no change

SEO

no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric	Lab Simulated
LCP CWV (estimate) Largest Contentful Paint	1.71 s good	↓ -1479 ms (-46.4%) 1.70 s – 4.69 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—
CLS CWV (estimate) Cumulative Layout Shift	0.006 good	→ no change 0.006 – 0.014
TBT Total Blocking Time	0 ms good	→ no change 0 ms – 0 ms
FCP First Contentful Paint	1.71 s good	↓ -1479 ms (-46.4%) 1.70 s – 4.69 s
Speed Index	1.71 s good	↓ -1479 ms (-46.4%) 1.70 s – 4.69 s
TTFB Time to First Byte	624 ms good	↑ +12 ms (+2%) 608 ms – 632 ms

Metric

Lab Simulated

Value

Change / range

Trend

LCP CWV (estimate) Largest Contentful Paint

1.71 s good

↓ -1479 ms (-46.4%) 1.70 s – 4.69 s

INP CWV Interaction to Next Paint — field only, no lab run can measure it

n/a

—

CLS CWV (estimate) Cumulative Layout Shift

0.006 good

→ no change 0.006 – 0.014

TBT Total Blocking Time

0 ms good

→ no change 0 ms – 0 ms

FCP First Contentful Paint

1.71 s good

↓ -1479 ms (-46.4%) 1.70 s – 4.69 s

Speed Index

1.71 s good

↓ -1479 ms (-46.4%) 1.70 s – 4.69 s

TTFB Time to First Byte

624 ms good

↑ +12 ms (+2%) 608 ms – 632 ms

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 108 ms

time to first byte 21 ms

Page weight

Metric	Value	Change / range
Page Weight	466 kB	↑ +145 B 463 kB – 466 kB
Requests	9	→ no change 9 – 9
Third-party Weight	463 kB	↑ +153 B 460 kB – 463 kB
Third-party CPU	0 ms	→ no change 0 ms – 0 ms
Unused JS	0 B	→ no change 0 B – 0 B
Unused CSS	0 B	→ no change 0 B – 0 B

Metric

Value

Change / range

Trend

Page Weight

466 kB

↑ +145 B 463 kB – 466 kB

Requests

→ no change 9 – 9

Third-party Weight

463 kB

↑ +153 B 460 kB – 463 kB

Third-party CPU

0 ms

→ no change 0 ms – 0 ms

Unused JS

0 B

→ no change 0 B – 0 B

Unused CSS

0 B

→ no change 0 B – 0 B

By resource type

Type	Share	Size	Requests
font	98.8%	460 kB	3
stylesheet	0.9%	4.1 kB	4
document	0.2%	1.1 kB	1
script	0.1%	495 B	1
Total		466 kB	9

Third parties 1 entities

Entity	Transfer	Size	Main thread Simulated
Google Fonts	font	463 kB	0 ms
Total		463 kB	0 ms

Entity

Transfer

Size

Main thread Simulated

Google Fonts

font

463 kB

0 ms

Total

463 kB

0 ms

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

1.5% of pixels differ — they are nearly identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric	Value	Change / range
Main Thread Work	114 ms	↓ -53 ms (-31.7%) significant 114 ms – 167 ms
Long Tasks	0	→ no change 0 – 0
DOM Elements	43	→ no change 43 – 43
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	8	→ no change 8 – 8
A11y Failures	3	→ no change 3 – 3
A11y Failing Nodes	7	→ no change 7 – 7

Metric

Value

Change / range

Trend

Main Thread Work

114 ms

↓ -53 ms (-31.7%) significant 114 ms – 167 ms

Long Tasks

→ no change 0 – 0

DOM Elements

→ no change 43 – 43

Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)

→ no change 8 – 8

A11y Failures

→ no change 3 – 3

A11y Failing Nodes

→ no change 7 – 7

Main thread work

Task	Share	Duration Simulated
other	52%	60 ms
style layout	28%	32 ms
script evaluation	10%	11 ms
paint composite render	5%	6 ms
parse HTML	4%	4 ms
script parse compile	1%	1 ms
Total		114 ms

Task

Time

Duration Simulated

other

52%

60 ms

style layout

28%

32 ms

script evaluation

10%

11 ms

paint composite render

6 ms

parse HTML

4 ms

script parse compile

1 ms

Total

114 ms

Axe violations axe-core 4.13.0, full rule set

8 violating nodes across 4 rules, 101 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious link-in-text-block — Links must be distinguishable without relying on color 5 nodes
Offending elements
1. p:nth-child(3) > a[href$="11ty.dev/"]
```
<a href="https://www.11ty.dev/">11ty</a>
```
2. a[href$="sass-lang.com/"]
```
<a href="https://sass-lang.com/">Sass</a>
```
3. a[href="https://github.com/CLCK0622"]
```
<a href="https://github.com/CLCK0622">CLCK</a>
```
4. .link[href$="11ty.dev/"][target="_blank"]
```
<a href="https://www.11ty.dev/" class="link" target="_blank">11ty</a>
```
5. a[href$="vercel.com/"]
```
<a href="https://vercel.com/" class="link" target="_blank">Vercel</a>
```

critical label — Form elements must have labels 1 node

Offending element

#darkmode

<input type="checkbox" id="darkmode" onclick="change_mode()" aria-labelledby="darkmodelabel">

moderate landmark-one-main — Document should have one main landmark 1 node
Offending element
1. html
```
<html lang="en">
```
moderate region — All page content should be contained by landmarks 1 node
Offending element
1. .content-wrapper
```
<div class="content-wrapper">
```

Accessibility failures 3 of 17 audits

link-in-text-block — Links rely on color to be distinguishable. 5 nodes
label — Form elements do not have associated labels 1 node
landmark-one-main — Document does not have a main landmark. 1 node

SEO failures 1 of 7 audits

meta-description — Document does not have a meta description

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	Weight	Runs	Spread	Bench	Took	Archive
Oct 3, 2026, 7:41 AM UTC	99	1.71 s	0.006	466 kB	3/3	±0	4,381 +76%	19.5s	Wayback
Sep 25, 2026, 11:55 PM UTC	87	3.19 s	0.006	466 kB	3/3	±22	2,484 0%	20.5s	Wayback
Sep 18, 2026, 8:32 PM UTC	99	1.71 s	0.014	464 kB	3/3	±30	2,333 -6%	22.3s	Wayback
Sep 11, 2026, 5:38 PM UTC	99	1.70 s	0.006	464 kB	3/3	±30	2,456 -1%	21.9s	Wayback
Sep 4, 2026, 2:54 PM UTC	71	4.69 s	0.006	464 kB	3/3	±17	2,482 0%	21.5s	Wayback
Aug 28, 2026, 1:53 PM UTC	87	3.18 s	0.014	464 kB	3/3	±22	2,319 -7%	20.7s	Wayback
Aug 20, 2026, 7:05 PM UTC	99	1.71 s	0.006	463 kB	3/3	±6	3,010 +21%	20s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Embed this score

Use this web component to show 11ty-serene.vercel.app's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site!

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Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB

LCP Subparts LAB 🐇 Unthrottled

Page weight

By resource type

Third parties 1 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 3 of 17 audits

SEO failures 1 of 7 audits

Hygiene

Measurement log

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled