justin.poehnelt.com

https://justin.poehnelt.com/

Ranks Overall #1,453 11ty Emeritus

Data from Oct 4, 2026, 4:29 AM UTC 4d old Measured once a week · 7 runs since Aug 21, 2026

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

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

Stack

Built with SvelteKit

Uses Svelte

Hosted by Cloudflare

Lighthouse Scores LAB Simulated

Performance

↓ -4 (-5.9%)

Accessibility

no change

100

Best Practices

no change

100

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	3.47 s needs work	↑ +129 ms (+3.9%) 3.22 s – 3.52 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—
CLS CWV (estimate) Cumulative Layout Shift	0 good	→ no change 0 – 0
TBT Total Blocking Time	1.41 s poor	↑ +310 ms (+28.2%) significant 1.03 s – 1.50 s
FCP First Contentful Paint	1.89 s needs work	↓ -3 ms (-0.2%) 1.89 s – 1.93 s
Speed Index	2.05 s good	↑ +87 ms (+4.4%) 1.96 s – 2.07 s
TTFB Time to First Byte	618 ms good	↓ -3 ms (-0.5%) 615 ms – 650 ms

Metric

Lab Simulated

Value

Change / range

Trend

LCP CWV (estimate) Largest Contentful Paint

3.47 s needs work

↑ +129 ms (+3.9%) 3.22 s – 3.52 s

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

n/a

—

CLS CWV (estimate) Cumulative Layout Shift

0 good

→ no change 0 – 0

TBT Total Blocking Time

1.41 s poor

↑ +310 ms (+28.2%) significant 1.03 s – 1.50 s

FCP First Contentful Paint

1.89 s needs work

↓ -3 ms (-0.2%) 1.89 s – 1.93 s

Speed Index

2.05 s good

↑ +87 ms (+4.4%) 1.96 s – 2.07 s

TTFB Time to First Byte

618 ms good

↓ -3 ms (-0.5%) 615 ms – 650 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 109 ms

time to first byte 63 ms

resource load delay 45 ms

resource load duration 21 ms

Page weight

Metric	Value	Change / range
Page Weight	604 kB	↑ +988 B (+0.2%) 548 kB – 604 kB
Requests	38	→ no change 38 – 39
Third-party Weight	178 kB	↑ +1.5 kB (+0.9%) 175 kB – 178 kB
Third-party CPU	54 ms	↑ +10 ms (+21.9%) 43 ms – 56 ms
Unused JS	177 kB	↑ +520 B (+0.3%) 173 kB – 177 kB
Unused CSS	0 B	→ no change 0 B – 0 B

Metric

Value

Change / range

Trend

Page Weight

604 kB

↑ +988 B (+0.2%) 548 kB – 604 kB

Requests

→ no change 38 – 39

Third-party Weight

178 kB

↑ +1.5 kB (+0.9%) 175 kB – 178 kB

Third-party CPU

54 ms

↑ +10 ms (+21.9%) 43 ms – 56 ms

Unused JS

177 kB

↑ +520 B (+0.3%) 173 kB – 177 kB

Unused CSS

0 B

→ no change 0 B – 0 B

By resource type

Type	Share	Size	Requests
script	67.7%	409 kB	32
image	17.2%	104 kB	1
document	10.7%	64.9 kB	1
stylesheet	3.6%	21.9 kB	1
other	0.7%	4.2 kB	3
Total		604 kB	38

Third parties 1 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	178 kB	54 ms
Total		178 kB	54 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

178 kB

54 ms

Total

178 kB

54 ms

Page health

Metric	Value	Change / range
Main Thread Work	3.87 s	↑ +719 ms (+22.8%) significant 2.93 s – 4.08 s
Long Tasks	8	↑ +4 (+100%) significant 4 – 8
DOM Elements	2,920	→ no change 2,787 – 2,920
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	12	→ no change 12 – 12
A11y Failures	2	→ no change 2 – 2
A11y Failing Nodes	12	→ no change 12 – 12

Metric

Value

Change / range

Trend

Main Thread Work

3.87 s

↑ +719 ms (+22.8%) significant 2.93 s – 4.08 s

Long Tasks

↑ +4 (+100%) significant 4 – 8

DOM Elements

2,920

→ no change 2,787 – 2,920

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

→ no change 12 – 12

A11y Failures

→ no change 2 – 2

A11y Failing Nodes

→ no change 12 – 12

Main thread work

Task	Share	Duration Simulated
script evaluation	70%	2.73 s
other	11%	421 ms
style layout	8%	325 ms
garbage collection	4%	153 ms
parse HTML	3%	98 ms
script parse compile	2%	81 ms
paint composite render	2%	67 ms
Total		3.87 s

Task

Time

Duration Simulated

script evaluation

70%

2.73 s

other

11%

421 ms

style layout

325 ms

garbage collection

153 ms

parse HTML

98 ms

script parse compile

81 ms

paint composite render

67 ms

Total

3.87 s

Axe violations axe-core 4.13.0, full rule set

12 violating nodes across 2 rules, 3493 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious color-contrast — Elements must meet minimum color contrast ratio thresholds 10 nodes
Offending elements (5 of 10)
1. a[href$="code/"] > .ml-1.text-muted-foreground
```
(73)
```
2. a[href$="google%20workspace/"] > .ml-1.text-muted-foreground
```
(36)
```
3. a[href$="google/"] > .ml-1.text-muted-foreground
```
(32)
```
4. a[href$="google-apps-script/"] > .ml-1.text-muted-foreground
```
(27)
```
5. a[href$="run/"] > .ml-1.text-muted-foreground
```
(19)
```

moderate heading-order — Heading levels should only increase by one 2 nodes

Offending elements

article:nth-child(1) > h4

<h4 class="text-xl font-bold mb-2 leading-snug hover:underline"><a href="/posts/2026-san-juan-softie-race-plan/" style="view-transition-name: post-title-2026-san-juan-softie-race-plan;">My 2026 San J…

article:nth-child(6) > h4

<h4 class="text-xl font-bold mb-2 leading-snug hover:underline"><a href="/posts/rewrite-your-cli-for-ai-agents/" style="view-transition-name: post-title-rewrite-your-cli-for-ai-agents;">You Need to R…

Accessibility failures 2 of 28 audits

color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 10 nodes
heading-order — Heading elements are not in a sequentially-descending order 2 nodes

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending	LCP	INP	CLS	FCP	TTFB
2026-08-01 → 2026-09-26	No data — 9 weeks under the CrUX reporting threshold
2026-07-25	1.27 s	—	0	1.11 s	605 ms
2026-07-18	1.52 s	173 ms	0	986 ms	505 ms
2026-07-11	1.52 s	173 ms	0	986 ms	505 ms
2026-07-04	1.35 s	162 ms	0	957 ms	491 ms
2026-06-27	1.52 s	162 ms	0	971 ms	499 ms
2026-05-09 → 2026-06-20	No data — 7 weeks under the CrUX reporting threshold
2026-05-02	981 ms	—	0	826 ms	396 ms
2026-04-25	1.06 s	—	0	1.03 s	469 ms
2026-04-18	1.13 s	—	0	1.04 s	454 ms
2026-04-11	1.18 s	—	0	1.14 s	523 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-08-01 → 2026-09-26

No data — 9 weeks under the CrUX reporting threshold

2026-07-25

1.27 s

—

1.11 s

605 ms

2026-07-18

1.52 s

173 ms

986 ms

505 ms

2026-07-11

1.52 s

173 ms

986 ms

505 ms

2026-07-04

1.35 s

162 ms

957 ms

491 ms

2026-06-27

1.52 s

162 ms

971 ms

499 ms

2026-05-09 → 2026-06-20

No data — 7 weeks under the CrUX reporting threshold

2026-05-02

981 ms

—

826 ms

396 ms

2026-04-25

1.06 s

—

1.03 s

469 ms

2026-04-18

1.13 s

—

1.04 s

454 ms

2026-04-11

1.18 s

—

1.14 s

523 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 4, 2026, 4:29 AM UTC	64	3.47 s	1.41 s	604 kB	3/3	±13	2,480 0%	37.1s	Wayback
Sep 27, 2026, 12:16 AM UTC	68	3.34 s	1.10 s	603 kB	3/3	±15	2,996 +21%	35.5s	Wayback
Sep 19, 2026, 7:17 PM UTC	69	3.32 s	1.03 s	602 kB	3/3	±1	2,949 +19%	30.9s	Wayback
Sep 12, 2026, 6:15 PM UTC	64	3.52 s	1.50 s	601 kB	3/3	±10	2,476 0%	33.7s	Wayback
Sep 5, 2026, 5:57 PM UTC	65	3.36 s	1.49 s	549 kB	3/3	±5	2,244 -10%	33.9s	Wayback
Aug 29, 2026, 5:00 PM UTC	67	3.22 s	1.30 s	549 kB	3/3	±19	2,667 +7%	34.1s	Wayback
Aug 21, 2026, 3:03 AM UTC	66	3.30 s	1.31 s	548 kB	3/3	±24	2,337 -6%	35.3s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB

LCP Subparts LAB 🐇 Unthrottled

Page weight

By resource type

Third parties 1 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 2 of 28 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled