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https://whiterabbitpress.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
1
REVIEW
4
PASS
8
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
84
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

670 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.22 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.135

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

670 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.25 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
8 PASS 4 REVIEW 1 FIX
D
Page Weight Budget
Action
2.4 MB transferred, 65 requests
FIX
2.4 MB transferred, 65 requests
Warning::
Page weighs 3.3 MB (2.4 MB transferred)
Warning::
Images are 2.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.0 MB
Info::
65 HTTP requests
Info::
Estimated 0.51 g CO2 per page load
2.4 MB / 2.4 MB budget
2.4 MB transferred
65 requests
0.51 g CO2 per page load
Images 2.0 MiB 82%
JavaScript 315.2 KiB 13%
Fonts 91.5 KiB 4%
HTML 19.3 KiB 1%
Other 16.8 KiB 1%
CSS 1.8 KiB 0%
Other 764 B 0%
Other 467 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

C
Image Optimization
Action
10 images, 0 KB saveable
REVIEW
10 images, 0 KB saveable
Warning::
https://whiterabbitpress.com/_nuxt/kana-cards.67ad... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/graded-readers.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/kana-poster.ae9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/kanji-poster.62... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/kanji-cards.ac2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/kana-category.d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/kanji-category.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://whiterabbitpress.com/_nuxt/hero.ec2d4d04.j... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
10 images 1.8 MB
0 oversized -0 KB
8 legacy format
8 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Bundles
Action
28 scripts, 179 KB unused
REVIEW
28 scripts, 179 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=G-HCHDC...: 91 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://whiterabbitpress.com/_nuxt/entry.c65a1877....: 33 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://whiterabbitpress.com/_nuxt/en.296ee664.js: 28 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://whiterabbitpress.com/_nuxt/en.296ee664.js: 28 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 179 KB
179 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtm.js?id=G-HCHDC5E8VQ&l=dataLayer173 KB91 KB (52%)✓3rd
https://whiterabbitpress.com/_nuxt/entry.c65a1877.js96 KB33 KB (35%)✓1st
https://whiterabbitpress.com/_nuxt/en.296ee664.js11 KB28 KB (73%)✓1st
https://whiterabbitpress.com/_nuxt/en.296ee664.js0 KB28 KB (73%)✓1st
https://whiterabbitpress.com/_nuxt/zh.2d1da8e3.js1 KB—✓1st
https://whiterabbitpress.com/_nuxt/error-component.f9a3dcb5.js1 KB—✓1st
https://whiterabbitpress.com/_nuxt/layout.9fdcbd1b.js1 KB—✓1st
https://whiterabbitpress.com/_nuxt/main.8cc9239b.js3 KB—✓1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 KB—✓3rd
https://whiterabbitpress.com/_nuxt/composables.ab654c87.js1 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Page Weight Inventory
Action
65 resources · 2.4 MB · 179 KB savings available
REVIEW
65 resources · 2.4 MB · 179 KB savings available
Warning::
Page weight 1.4 MB over 1MB target
Got: 2.4 MB Expected: ≤ 1 MB
Info::
~179 KB of savings available
Info::
11 third-party resources (11% of weight)
Info::
5 resources over 200KB
65 resources · 2.4 MiB · 11 third-party 1.4 MiB over 1MB target
Image 82% · 2.0 MiB
JavaScript 13% · 330.1 KiB
Font 4% · 91.5 KiB
Document 1% · 19.3 KiB
CSS 0% · 1.8 KiB
Other 0% · 1.2 KiB

~179.5 KiB of savings available

Remove unused JavaScript: 179.5 KiB
B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Third-Party Impact
11% third-party, 0 ms blocking
PASS
11% third-party, 0 ms blocking
Info::
Third-party code accounts for 11% of page weight (277.1 KiB of 2.4 MiB)
Info::
Third-party blocking time is low (0 ms)
89%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
JS Execution Cost
476ms total JS execution
PASS
476ms total JS execution
Info::
Unattributable: 171ms CPU time
Info::
https://whiterabbitpress.com/: 171ms CPU time
Info::
https://whiterabbitpress.com/_nuxt/entry.c65a1877....: 72ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=G-HCHDC...: 61ms CPU time
Info::
Third-party scripts: 233ms (49% of total)

Main Thread Breakdown

Script Evaluation 38% Style & Layout 28% Other 26% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
Unattributable171ms66ms0ms3rd
https://whiterabbitpress.com/171ms3ms0ms1st
https://whiterabbitpress.com/_nuxt/entry.c65a1877.js72ms66ms1ms1st
https://www.googletagmanager.com/gtm.js?id=G-HCHDC5E8VQ&l=dataLayer61ms44ms17ms3rd
A+
Font Loading
3 fonts (91 KB)
PASS
3 fonts (91 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

91 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 670 ms LCP 2.2 shttps://use.typekit.net/af/efe4a5/00000000000000007735e609/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/efe4a5/00000000000000007735e609/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 29.8 KiB — 11 ms — font-display: swaphttps://use.typekit.net/af/2555e1/00000000000000007735e603/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/2555e1/00000000000000007735e603/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 30.6 KiB — 15 ms — font-display: swaphttps://use.typekit.net/af/3322cc/00000000000000007735e616/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3l https://use.typekit.net/af/3322cc/00000000000000007735e616/30/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=i4&v=3 — 31.1 KiB — 20 ms — font-display: swap
l woff2 swap
Size 30 KB
Load time 11 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 31 KB
Load time 15 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 31 KB
Load time 20 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
65 requests over 592ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 670 ms LCP 2.2 shttps://whiterabbitpress.com// https://whiterabbitpress.com/ — 200 — 18.9 KiB — 73 ms — h3https://whiterabbitpress.com/_payload.js/_payload.js https://whiterabbitpress.com/_payload.js — 200 — 591 B — 40 ms — h3https://whiterabbitpress.com/_nuxt/entry.6a6f6413.css/_nuxt/entry.6a6f6413.css https://whiterabbitpress.com/_nuxt/entry.6a6f6413.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/index.493919a9.css/_nuxt/index.493919a9.css https://whiterabbitpress.com/_nuxt/index.493919a9.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/button.242523a0.css/_nuxt/button.242523a0.css https://whiterabbitpress.com/_nuxt/button.242523a0.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/main.dfb85664.css/_nuxt/main.dfb85664.css https://whiterabbitpress.com/_nuxt/main.dfb85664.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/entry.c65a1877.js/_nuxt/entry.c65a1877.js https://whiterabbitpress.com/_nuxt/entry.c65a1877.js — 200 — 96.1 KiB — 99 ms — h3https://whiterabbitpress.com/_nuxt/index.213c3042.js/_nuxt/index.213c3042.js https://whiterabbitpress.com/_nuxt/index.213c3042.js — 200 — 14.2 KiB — 46 ms — h3https://whiterabbitpress.com/_nuxt/_plugin-vue_export-helper.a1a6add7.js/_nuxt/_plugin-vue_export-helper.a1... https://whiterabbitpress.com/_nuxt/_plugin-vue_export-helper.a1a6add7.js — 200 — 622 B — 42 ms — h3https://whiterabbitpress.com/_nuxt/composables.ab654c87.js/_nuxt/composables.ab654c87.js https://whiterabbitpress.com/_nuxt/composables.ab654c87.js — 200 — 664 B — 43 ms — h3https://whiterabbitpress.com/_nuxt/button.bd47a9c7.js/_nuxt/button.bd47a9c7.js https://whiterabbitpress.com/_nuxt/button.bd47a9c7.js — 200 — 1.1 KiB — 43 ms — h3https://whiterabbitpress.com/_nuxt/layout.9fdcbd1b.js/_nuxt/layout.9fdcbd1b.js https://whiterabbitpress.com/_nuxt/layout.9fdcbd1b.js — 200 — 1.1 KiB — 39 ms — h3https://whiterabbitpress.com/_nuxt/main.8cc9239b.js/_nuxt/main.8cc9239b.js https://whiterabbitpress.com/_nuxt/main.8cc9239b.js — 200 — 3.2 KiB — 52 ms — h3https://whiterabbitpress.com/_nuxt/hero.ec2d4d04.jpg/_nuxt/hero.ec2d4d04.jpg https://whiterabbitpress.com/_nuxt/hero.ec2d4d04.jpg — 200 — 114.9 KiB — 123 ms — h3https://whiterabbitpress.com/_nuxt/kana-cards.67ad6b77.png/_nuxt/kana-cards.67ad6b77.png https://whiterabbitpress.com/_nuxt/kana-cards.67ad6b77.png — 200 — 559.2 KiB — 191 ms — h3https://whiterabbitpress.com/_nuxt/kanji-cards.ac26d598.png/_nuxt/kanji-cards.ac26d598.png https://whiterabbitpress.com/_nuxt/kanji-cards.ac26d598.png — 200 — 203.5 KiB — 153 ms — h3https://whiterabbitpress.com/_nuxt/graded-readers.a7fd7752.png/_nuxt/graded-readers.a7fd7752.png https://whiterabbitpress.com/_nuxt/graded-readers.a7fd7752.png — 200 — 215.7 KiB — 156 ms — h3https://whiterabbitpress.com/_nuxt/kana-poster.ae965e0a.png/_nuxt/kana-poster.ae965e0a.png https://whiterabbitpress.com/_nuxt/kana-poster.ae965e0a.png — 200 — 198.4 KiB — 160 ms — h3https://whiterabbitpress.com/_nuxt/kanji-poster.62b53feb.png/_nuxt/kanji-poster.62b53feb.png https://whiterabbitpress.com/_nuxt/kanji-poster.62b53feb.png — 200 — 350.4 KiB — 176 ms — h3https://whiterabbitpress.com/_nuxt/kana-category.d7f766da.jpg/_nuxt/kana-category.d7f766da.jpg https://whiterabbitpress.com/_nuxt/kana-category.d7f766da.jpg — 200 — 333.2 KiB — 179 ms — h3https://whiterabbitpress.com/_nuxt/kanji-category.2e85658b.jpg/_nuxt/kanji-category.2e85658b.jpg https://whiterabbitpress.com/_nuxt/kanji-category.2e85658b.jpg — 200 — 81.7 KiB — 181 ms — h3data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8SEhEP…data:image/jpeg;base64,/9j/4AAQSkZJ... data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8SEhEP… — 200 — 0 B — 0 ms — datahttps://whiterabbitpress.com/_nuxt/eirini.8e6733f1.jpg/_nuxt/eirini.8e6733f1.jpg https://whiterabbitpress.com/_nuxt/eirini.8e6733f1.jpg — 200 — 4.5 KiB — 95 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 70 ms — h2data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8SEhEP…data:image/jpeg;base64,/9j/4AAQSkZJ... data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8SEhEP… — 200 — 0 B — 0 ms — datadata:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8SEhEP…data:image/jpeg;base64,/9j/4AAQSkZJ... data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8SEhEP… — 200 — 0 B — 0 ms — datahttps://whiterabbitpress.com/_nuxt/en.296ee664.js/_nuxt/en.296ee664.js https://whiterabbitpress.com/_nuxt/en.296ee664.js — 200 — 10.5 KiB — 98 ms — h3https://whiterabbitpress.com/_nuxt/de.b8a1c7e1.js/_nuxt/de.b8a1c7e1.js https://whiterabbitpress.com/_nuxt/de.b8a1c7e1.js — 200 — 676 B — 61 ms — h3https://whiterabbitpress.com/_nuxt/fr.e0fd437f.js/_nuxt/fr.e0fd437f.js https://whiterabbitpress.com/_nuxt/fr.e0fd437f.js — 200 — 644 B — 61 ms — h3https://whiterabbitpress.com/_nuxt/pt.0aaac69e.js/_nuxt/pt.0aaac69e.js https://whiterabbitpress.com/_nuxt/pt.0aaac69e.js — 200 — 694 B — 59 ms — h3
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 670 ms LCP 2.2 shttps://whiterabbitpress.com// https://whiterabbitpress.com/ — 200 — 18.9 KiB — 73 ms — h3https://whiterabbitpress.com/_payload.js/_payload.js https://whiterabbitpress.com/_payload.js — 200 — 591 B — 40 ms — h3https://whiterabbitpress.com/_nuxt/entry.6a6f6413.css/_nuxt/entry.6a6f6413.css https://whiterabbitpress.com/_nuxt/entry.6a6f6413.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/index.493919a9.css/_nuxt/index.493919a9.css https://whiterabbitpress.com/_nuxt/index.493919a9.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/button.242523a0.css/_nuxt/button.242523a0.css https://whiterabbitpress.com/_nuxt/button.242523a0.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/main.dfb85664.css/_nuxt/main.dfb85664.css https://whiterabbitpress.com/_nuxt/main.dfb85664.css — 200 — 0 B — 11 ms — h3https://whiterabbitpress.com/_nuxt/entry.c65a1877.js/_nuxt/entry.c65a1877.js https://whiterabbitpress.com/_nuxt/entry.c65a1877.js — 200 — 96.1 KiB — 99 ms — h3https://whiterabbitpress.com/_nuxt/index.213c3042.js/_nuxt/index.213c3042.js https://whiterabbitpress.com/_nuxt/index.213c3042.js — 200 — 14.2 KiB — 46 ms — h3https://whiterabbitpress.com/_nuxt/_plugin-vue_export-helper.a1a6add7.js/_nuxt/_plugin-vue_export-helper.a1... https://whiterabbitpress.com/_nuxt/_plugin-vue_export-helper.a1a6add7.js — 200 — 622 B — 42 ms — h3https://whiterabbitpress.com/_nuxt/composables.ab654c87.js/_nuxt/composables.ab654c87.js https://whiterabbitpress.com/_nuxt/composables.ab654c87.js — 200 — 664 B — 43 ms — h3https://whiterabbitpress.com/_nuxt/button.bd47a9c7.js/_nuxt/button.bd47a9c7.js https://whiterabbitpress.com/_nuxt/button.bd47a9c7.js — 200 — 1.1 KiB — 43 ms — h3https://whiterabbitpress.com/_nuxt/layout.9fdcbd1b.js/_nuxt/layout.9fdcbd1b.js https://whiterabbitpress.com/_nuxt/layout.9fdcbd1b.js — 200 — 1.1 KiB — 39 ms — h3https://whiterabbitpress.com/_nuxt/main.8cc9239b.js/_nuxt/main.8cc9239b.js https://whiterabbitpress.com/_nuxt/main.8cc9239b.js — 200 — 3.2 KiB — 52 ms — h3https://whiterabbitpress.com/_nuxt/hero.ec2d4d04.jpg/_nuxt/hero.ec2d4d04.jpg https://whiterabbitpress.com/_nuxt/hero.ec2d4d04.jpg — 200 — 114.9 KiB — 123 ms — h3https://whiterabbitpress.com/_nuxt/kana-cards.67ad6b77.png/_nuxt/kana-cards.67ad6b77.png https://whiterabbitpress.com/_nuxt/kana-cards.67ad6b77.png — 200 — 559.2 KiB — 191 ms — h3https://whiterabbitpress.com/_nuxt/kanji-cards.ac26d598.png/_nuxt/kanji-cards.ac26d598.png https://whiterabbitpress.com/_nuxt/kanji-cards.ac26d598.png — 200 — 203.5 KiB — 153 ms — h3https://whiterabbitpress.com/_nuxt/graded-readers.a7fd7752.png/_nuxt/graded-readers.a7fd7752.png https://whiterabbitpress.com/_nuxt/graded-readers.a7fd7752.png — 200 — 215.7 KiB — 156 ms — h3https://whiterabbitpress.com/_nuxt/kana-poster.ae965e0a.png/_nuxt/kana-poster.ae965e0a.png 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
49% of JavaScript execution is third-party
First-party Third-party 233ms · 173KB · $3/mo
Unattributable
Other
Optional
Execution 171ms
Transfer 0 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 61ms
Transfer 173 KB
Unused 52%
Monthly Cost $1/mo

49% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

52% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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