codetv.dev/series/learn-with-jason/s8

https://codetv.dev/series/learn-with-jason/s8

Ranks Overall #1,104 Astro Showcase #96

Data from Oct 2, 2026, 6:50 AM UTC 16h old Measured once a month · 1 run since Oct 2, 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 Astro 7.2.2

Uses React

Hosted by Netlify

Lighthouse Scores LAB Simulated

Performance

no change

Accessibility

no change

Best Practices

no change

SEO

no change

Metrics LAB FIELD

Core Web Vitals: failing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-02 → 2026-09-29), origin-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	3.33 s needs work	— 3.33 s – 3.33 s	2.79 s needs work	70.4% 18.2% 11.4%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	—	—
CLS CWV Cumulative Layout Shift	0.022 good	— 0.022 – 0.022	0.010 good	95.8% 2.6% 1.6%
TBT Total Blocking Time	295 ms needs work	— 295 ms – 295 ms	n/a	—
FCP First Contentful Paint	2.88 s needs work	— 2.88 s – 2.88 s	2.14 s needs work	66.3% 19.1% 14.6%
Speed Index	2.88 s good	— 2.88 s – 2.88 s	n/a	—
TTFB Time to First Byte	606 ms good	— 606 ms – 606 ms	971 ms needs work	66.7% 24.1% 9.2%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

3.33 s needs work

— 3.33 s – 3.33 s

2.79 s needs work

70.4% 18.2% 11.4%

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

n/a

—

CLS CWV Cumulative Layout Shift

0.022 good

— 0.022 – 0.022

0.010 good

95.8% 2.6% 1.6%

TBT Total Blocking Time

295 ms needs work

— 295 ms – 295 ms

n/a

—

FCP First Contentful Paint

2.88 s needs work

— 2.88 s – 2.88 s

2.14 s needs work

66.3% 19.1% 14.6%

Speed Index

2.88 s good

— 2.88 s – 2.88 s

n/a

—

TTFB Time to First Byte

606 ms good

— 606 ms – 606 ms

971 ms needs work

66.7% 24.1% 9.2%

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 91 ms

resource load duration 25 ms

resource load delay 11 ms

time to first byte 7 ms

LCP LAB Simulated vs LCP FIELD

Lab 3.33 s

Field p75 2.79 s

The lab LCP is 1.19× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	2.24 MB	— 2.24 MB – 2.24 MB
Requests	63	— 63 – 63
Third-party Weight	1.97 MB	— 1.97 MB – 1.97 MB
Third-party CPU	113 ms	— 113 ms – 113 ms
Unused JS	217 kB	— 217 kB – 217 kB
Unused CSS	0 B	— 0 B – 0 B

Metric

Value

Change / range

Trend

Page Weight

2.24 MB

— 2.24 MB – 2.24 MB

Requests

— 63 – 63

Third-party Weight

1.97 MB

— 1.97 MB – 1.97 MB

Third-party CPU

113 ms

— 113 ms – 113 ms

Unused JS

217 kB

— 217 kB – 217 kB

Unused CSS

0 B

— 0 B – 0 B

By resource type

Type	Share	Size	Requests
image	72%	1.60 MB	24
script	22.3%	496 kB	21
font	4.4%	98.1 kB	1
document	0.6%	12.3 kB	1
other	0.4%	8.6 kB	8
stylesheet	0.4%	8.2 kB	5
Total		2.24 MB	63

Third parties 5 entities

Entity	Transfer	Size	Main thread Simulated
Cloudinary	image	1.60 MB	0 ms
Facebook	script	262 kB	110 ms
Google Fonts		98.8 kB	0 ms
Fathom Analytics		3.2 kB	3 ms
on.aws		214 B	0 ms
Total		1.97 MB	113 ms

Entity

Transfer

Size

Main thread Simulated

Cloudinary

image

1.60 MB

0 ms

Facebook

script

262 kB

110 ms

Google Fonts

98.8 kB

0 ms

Fathom Analytics

3.2 kB

3 ms

on.aws

214 B

0 ms

Total

1.97 MB

113 ms

Page health

Metric	Value	Change / range
Main Thread Work	1.64 s	— 1.64 s – 1.64 s
Long Tasks	6	— 6 – 6
DOM Elements	408	— 408 – 408
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	5	— 5 – 5
A11y Failures	3	— 3 – 3
A11y Failing Nodes	3	— 3 – 3

Metric

Value

Change / range

Trend

Main Thread Work

1.64 s

— 1.64 s – 1.64 s

Long Tasks

— 6 – 6

DOM Elements

408

— 408 – 408

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

— 5 – 5

A11y Failures

— 3 – 3

A11y Failing Nodes

— 3 – 3

Main thread work

Task	Share	Duration Simulated
script evaluation	45%	736 ms
other	21%	352 ms
style layout	20%	329 ms
script parse compile	9%	155 ms
paint composite render	2%	39 ms
parse HTML	2%	26 ms
garbage collection	0%	3 ms
Total		1.64 s

Task

Time

Duration Simulated

script evaluation

45%

736 ms

other

21%

352 ms

style layout

20%

329 ms

script parse compile

155 ms

paint composite render

39 ms

parse HTML

26 ms

garbage collection

3 ms

Total

1.64 s

Axe violations axe-core 4.13.0, full rule set

5 violating nodes across 5 rules, 880 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

critical button-name — Buttons must have discernible text 1 node
Offending element
1. .menu-toggle
```
<button class="menu-toggle" data-astro-cid-4oan7hod="">
```
moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
Offending element
1. .middle > .links
```
<nav class="links" data-astro-cid-ddhozxeg="">
```
serious link-name — Links must have discernible text 1 node
Offending element
1. a[href="/"]
```
<a href="/" rel="home" data-astro-cid-4oan7hod="">
```
moderate page-has-heading-one — Page should contain a level-one heading 1 node
Offending element
1. html
```
<html lang="en" data-astro-cid-q6cgz77h="">
```

critical select-name — Select element must have an accessible name 1 node

Offending element

#collection-selector

<select id="collection-selector" style="--bg: url(https://res.cloudinary.com/jlengstorf/image/upload/q_auto/ar_16:9,c_fill,w_1280/lwj-card?_a=BAMAPqhM0);" data-astro-cid-ljfvu7sp="">

Accessibility failures 3 of 16 audits

button-name — Buttons do not have an accessible name 1 node
link-name — Links do not have a discernible name 1 node
select-name — Select elements do not have associated label elements. 1 node

Best Practices failures 2 of 20 audits

image-size-responsive — Serves images with low resolution 1 item
errors-in-console — Browser errors were logged to the console 2 items

SEO failures 1 of 10 audits

meta-description — Document does not have a meta description

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 2 console errors

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
2026-09-26	2.88 s	—	0.010	2.28 s	1.02 s
2026-09-19	3.26 s	—	0.040	2.64 s	1.21 s
2026-09-12	3.23 s	214 ms	0.040	2.58 s	1.17 s
2026-09-05	3.15 s	185 ms	0.040	2.54 s	1.17 s
2026-08-29	2.95 s	189 ms	0.040	2.45 s	1.07 s
2026-08-22	2.87 s	180 ms	0.040	2.36 s	1.13 s
2026-08-15	2.52 s	175 ms	0.030	2.00 s	1.04 s
2026-08-08	2.72 s	189 ms	0.040	2.25 s	1.15 s
2026-08-01	2.64 s	165 ms	0.020	2.21 s	1.15 s
2026-07-25	2.57 s	152 ms	0.020	2.11 s	1.08 s
2026-07-18	2.77 s	164 ms	0.020	2.28 s	1.16 s
2026-07-11	2.56 s	232 ms	0.030	2.11 s	1.03 s

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

2.88 s

—

0.010

2.28 s

1.02 s

2026-09-19

3.26 s

—

0.040

2.64 s

1.21 s

2026-09-12

3.23 s

214 ms

0.040

2.58 s

1.17 s

2026-09-05

3.15 s

185 ms

0.040

2.54 s

1.17 s

2026-08-29

2.95 s

189 ms

0.040

2.45 s

1.07 s

2026-08-22

2.87 s

180 ms

0.040

2.36 s

1.13 s

2026-08-15

2.52 s

175 ms

0.030

2.00 s

1.04 s

2026-08-08

2.72 s

189 ms

0.040

2.25 s

1.15 s

2026-08-01

2.64 s

165 ms

0.020

2.21 s

1.15 s

2026-07-25

2.57 s

152 ms

0.020

2.11 s

1.08 s

2026-07-18

2.77 s

164 ms

0.020

2.28 s

1.16 s

2026-07-11

2.56 s

232 ms

0.030

2.11 s

1.03 s

Runs

Every stored run for this URL, newest first.

When	Scores	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 2, 2026, 6:50 AM UTC		81	3.33 s	0.022	295 ms	2.24 MB	3/3	±20	2,477 0%	28.6s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐇 Unthrottled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Third parties 5 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 3 of 16 audits

Best Practices failures 2 of 20 audits

SEO failures 1 of 10 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD