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https://cookpad.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
4
PASS
9
INFO
2

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

Mobile Desktop
66
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
70
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.
85
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.

2.94 s

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

7.23 s

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

110 ms

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

0.000

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

5.80 s

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

7.29 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
17
9 PASS 4 REVIEW 2 FIX
D
Third-Party Impact
Action
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (824.6 KiB of 844.3 KiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Info::
All images are well-optimized
18 images 421 KB
0 oversized -0 KB
5 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1014ms total JS execution
REVIEW
1014ms total JS execution
Warning::
https://global-web-assets.cpcdn.com/packs/js/appli...: 267ms CPU time
Info::
Unattributable: 235ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-V9HW...: 201ms CPU time
Info::
https://global-web-assets.cpcdn.com/packs/js/3629-...: 185ms CPU time
Info::
https://cookpad.com/es: 127ms CPU time
Warning::
Third-party scripts: 888ms (88% of total)

Main Thread Breakdown

Script Evaluation 48% Other 27% Style & Layout 15% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://global-web-assets.cpcdn.com/packs/js/application-fa35f85882f0bb5bf1b6.js267ms115ms5ms3rd
Unattributable235ms6ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-V9HWNDL45E201ms152ms40ms3rd
https://global-web-assets.cpcdn.com/packs/js/3629-e190b765d5062b956c9a.chunk.js185ms85ms6ms3rd
https://cookpad.com/es127ms43ms3ms1st
B
JS Bundles
30 scripts, 132 KB unused
REVIEW
30 scripts, 132 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-V9HW...: 89 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://global-web-assets.cpcdn.com/packs/js/9674-...: 22 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://global-web-assets.cpcdn.com/packs/js/3389-...: 21 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 132 KB
132 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-V9HWNDL45E175 KB89 KB (51%)✓3rd
https://global-web-assets.cpcdn.com/packs/js/9674-fd786247d3cad7ec5fb5.js39 KB22 KB (58%)✓3rd
https://global-web-assets.cpcdn.com/packs/js/3389-76e0fa31a0a626787f58.js25 KB21 KB (84%)✓3rd
https://global-web-assets.cpcdn.com/packs/js/2842-8b3fa291e8f59c0a1016.chunk.js1 KB—✓3rd
https://global-web-assets.cpcdn.com/packs/js/8924-111f4ffc0fbcf7a21c09.chunk.js2 KB—✓3rd
https://global-web-assets.cpcdn.com/packs/js/application-fa35f85882f0bb5bf1b6.js18 KB—✓3rd
https://global-web-assets.cpcdn.com/packs/js/cloudwatch_rum-7419805cd3f46aeb6902.js1 KB—✓3rd
https://global-web-assets.cpcdn.com/packs/js/8953-b6ca56ea592136e6cb67.chunk.js1 KB—✓3rd
https://global-web-assets.cpcdn.com/packs/js/356-f8692cb33e4d8d52c637.chunk.js1 KB—✓3rd
https://global-web-assets.cpcdn.com/packs/js/3079-4a6ea3a01164468bff90.chunk.js1 KB—✓3rd

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
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
844 KB transferred, 61 requests
PASS
844 KB transferred, 61 requests
Info::
Page weighs 1.7 MB (844 KB transferred)
Info::
61 HTTP requests
Info::
Estimated 0.17 g CO2 per page load
844 KB / 2.4 MB budget
844 KB transferred
61 requests
0.17 g CO2 per page load
Images 420.9 KiB 50%
JavaScript 334.9 KiB 40%
Fonts 35.8 KiB 4%
CSS 28.5 KiB 3%
HTML 16.7 KiB 2%
Other 4.8 KiB 1%
Other 1.6 KiB 0%
Other 1.2 KiB 0%
0 2.4 MB 4.9 MB
Under budget
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+
Font Loading
3 fonts (36 KB)
PASS
3 fonts (36 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

36 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 2.9 s LCP 7.2 shttps://use.typekit.net/af/e5635b/00000000000000007735b98f/30/l?primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&fvd=n6&v=3l https://use.typekit.net/af/e5635b/00000000000000007735b98f/30/l?primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&fvd=n6&v=3 — 11.9 KiB — 19 ms — font-display: swaphttps://use.typekit.net/af/74b049/00000000000000007735b97f/30/l?primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&fvd=n4&v=3l https://use.typekit.net/af/74b049/00000000000000007735b97f/30/l?primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&fvd=n4&v=3 — 11.9 KiB — 23 ms — font-display: swaphttps://use.typekit.net/af/9edcf7/00000000000000007735b988/30/l?primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&fvd=n5&v=3l https://use.typekit.net/af/9edcf7/00000000000000007735b988/30/l?primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&fvd=n5&v=3 — 11.9 KiB — 20 ms — font-display: swap
l woff2 swap
Size 12 KB
Load time 19 ms
Start 542 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 12 KB
Load time 23 ms
Start 542 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 12 KB
Load time 20 ms
Start 542 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
2
preload
—
dns-prefetch
—
prefetch
—

2 resource hints configured

A
Page Weight Inventory
61 resources · 844 KB · 132 KB savings available
PASS
61 resources · 844 KB · 132 KB savings available
Info::
Within 1MB page-weight target
Got: 844 KB
Info::
~132 KB of savings available
Warning::
56 third-party resources (98% of weight)
61 resources · 844.3 KiB · 56 third-party Within 1MB page-weight target
Image 50% · 425.4 KiB
JavaScript 40% · 334.9 KiB
Font 4% · 35.8 KiB
CSS 3% · 28.5 KiB
Document 2% · 18.3 KiB
Other 0% · 1.4 KiB

~131.6 KiB of savings available

Remove unused JavaScript: 131.6 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
61 requests over 1612ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 2.9 s LCP 7.2 shttps://cookpad.com// https://cookpad.com/ — 302 — 204 B — 10 ms — h2https://cookpad.com/es/es https://cookpad.com/es — 200 — 16.7 KiB — 262 ms — h2https://global-web-assets.cpcdn.com/packs/css/application-v2-1fc10fb9.cssglobal-web-assets.cpcdn.com/packs/c... https://global-web-assets.cpcdn.com/packs/css/application-v2-1fc10fb9.css — 200 — 26.2 KiB — 108 ms — h3https://global-web-assets.cpcdn.com/packs/css/print-4bd48ce3.cssglobal-web-assets.cpcdn.com/packs/c... https://global-web-assets.cpcdn.com/packs/css/print-4bd48ce3.css — 200 — 1.1 KiB — 73 ms — h3https://global-web-assets.cpcdn.com/packs/js/runtime-aa718064cb24b23a16a7.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/runtime-aa718064cb24b23a16a7.js — 200 — 7.1 KiB — 101 ms — h3https://global-web-assets.cpcdn.com/packs/js/9674-fd786247d3cad7ec5fb5.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/9674-fd786247d3cad7ec5fb5.js — 200 — 39.3 KiB — 119 ms — h3https://global-web-assets.cpcdn.com/packs/js/cloudwatch_rum-7419805cd3f46aeb6902.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/cloudwatch_rum-7419805cd3f46aeb6902.js — 200 — 1.2 KiB — 80 ms — h3https://use.typekit.net/zbz2cyk.cssuse.typekit.net/zbz2cyk.css https://use.typekit.net/zbz2cyk.css — 200 — 1.0 KiB — 15 ms — h2https://global-web-assets.cpcdn.com/assets/premium/premium_feature/hall_of_fame_recipes-c88c0c3e9b0a9baec1fcd84c066cc9c78eb79f44d4848ba4bac890e5e90e3786.webpglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/premium/premium_feature/hall_of_fame_recipes-c88c0c3e9b0a9baec1fcd84c066cc9c78eb79f44d4848ba4bac890e5e90e3786.webp — 200 — 85.3 KiB — 144 ms — h3https://p.typekit.net/p.css?s=1&k=zbz2cyk&ht=tk&f=40409.40410.40411.40412.40413.40414&a=63657241&app=typekit&e=cssp.typekit.net/p.css?s=1&k=zbz2cyk&h... https://p.typekit.net/p.css?s=1&k=zbz2cyk&ht=tk&f=40409.40410.40411.40412.40413.40414&a=63657241&app=typekit&e=css — 200 — 172 B — 7 ms — h2https://global-web-assets.cpcdn.com/assets/premium/premium_feature/access_rankings-a00e64c1f8635b8c1c34eaf988550afe8a389e92e5940ce77d5314833fdd5703.webpglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/premium/premium_feature/access_rankings-a00e64c1f8635b8c1c34eaf988550afe8a389e92e5940ce77d5314833fdd5703.webp — 200 — 123.8 KiB — 87 ms — h3https://cookpad.com/es/webapp_manifest/es/webapp_manifest https://cookpad.com/es/webapp_manifest — 200 — 1.2 KiB — 183 ms — h3https://global-web-assets.cpcdn.com/packs/js/5197-2c9b16242dfb340ebfe4.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/5197-2c9b16242dfb340ebfe4.js — 200 — 11.1 KiB — 43 ms — h3https://global-web-assets.cpcdn.com/packs/js/3389-76e0fa31a0a626787f58.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/3389-76e0fa31a0a626787f58.js — 200 — 25.1 KiB — 46 ms — h3https://global-web-assets.cpcdn.com/packs/js/application-fa35f85882f0bb5bf1b6.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/application-fa35f85882f0bb5bf1b6.js — 200 — 18.0 KiB — 46 ms — h3https://www.googletagmanager.com/gtag/js?id=G-V9HWNDL45Ewww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-V9HWNDL45E — 200 — 174.8 KiB — 201 ms — h2https://global-web-assets.cpcdn.com/assets/logo_circle-d106f02123de882fffdd2c06593eb2fd33f0ddf20418dd75ed72225bdb0e0ff7.pngglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/logo_circle-d106f02123de882fffdd2c06593eb2fd33f0ddf20418dd75ed72225bdb0e0ff7.png — 200 — 2.4 KiB — 44 ms — h3https://global-web-assets.cpcdn.com/assets/logo_text-da02013e64b510c60b109001fc44bcb7195f9e3105287817103b6cff4f8e0563.pngglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/logo_text-da02013e64b510c60b109001fc44bcb7195f9e3105287817103b6cff4f8e0563.png — 200 — 2.6 KiB — 44 ms — h3https://global-web-assets.cpcdn.com/assets/guest_user-411965b370bbbfc1433c4478633d4974e180b506f29555ff58032b0ab04c5b56.pngglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/guest_user-411965b370bbbfc1433c4478633d4974e180b506f29555ff58032b0ab04c5b56.png — 200 — 1.5 KiB — 43 ms — h3https://global-web-assets.cpcdn.com/packs/js/8953-b6ca56ea592136e6cb67.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/8953-b6ca56ea592136e6cb67.chunk.js — 200 — 1.5 KiB — 42 ms — h3https://global-web-assets.cpcdn.com/packs/js/356-f8692cb33e4d8d52c637.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/356-f8692cb33e4d8d52c637.chunk.js — 200 — 1.0 KiB — 39 ms — h3https://global-web-assets.cpcdn.com/packs/js/3079-4a6ea3a01164468bff90.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/3079-4a6ea3a01164468bff90.chunk.js — 200 — 1.0 KiB — 41 ms — h3https://global-web-assets.cpcdn.com/packs/js/5797-05c3874e87dc711952af.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/5797-05c3874e87dc711952af.chunk.js — 200 — 964 B — 44 ms — h3https://global-web-assets.cpcdn.com/packs/js/730-e3d48ae9d1f129c29c51.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/730-e3d48ae9d1f129c29c51.chunk.js — 200 — 939 B — 49 ms — h3https://global-web-assets.cpcdn.com/packs/js/9930-cdec47b09b509eb12f00.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/9930-cdec47b09b509eb12f00.chunk.js — 200 — 970 B — 49 ms — h3https://global-web-assets.cpcdn.com/packs/js/1117-aee2704507fa870df466.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/1117-aee2704507fa870df466.chunk.js — 200 — 971 B — 48 ms — h3https://global-web-assets.cpcdn.com/packs/js/2842-8b3fa291e8f59c0a1016.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/2842-8b3fa291e8f59c0a1016.chunk.js — 200 — 1.3 KiB — 49 ms — h3https://global-web-assets.cpcdn.com/packs/js/1079-dff134db11389c3d1f5c.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/1079-dff134db11389c3d1f5c.chunk.js — 200 — 1.3 KiB — 69 ms — h3https://global-web-assets.cpcdn.com/packs/js/8924-111f4ffc0fbcf7a21c09.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/8924-111f4ffc0fbcf7a21c09.chunk.js — 200 — 2.1 KiB — 62 ms — h3https://global-web-assets.cpcdn.com/packs/js/8215-448e6743da6ade848ad2.chunk.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/8215-448e6743da6ade848ad2.chunk.js — 200 — 846 B — 70 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 2.9 s LCP 7.2 shttps://cookpad.com// https://cookpad.com/ — 302 — 204 B — 10 ms — h2https://cookpad.com/es/es https://cookpad.com/es — 200 — 16.7 KiB — 262 ms — h2https://global-web-assets.cpcdn.com/packs/css/application-v2-1fc10fb9.cssglobal-web-assets.cpcdn.com/packs/c... https://global-web-assets.cpcdn.com/packs/css/application-v2-1fc10fb9.css — 200 — 26.2 KiB — 108 ms — h3https://global-web-assets.cpcdn.com/packs/css/print-4bd48ce3.cssglobal-web-assets.cpcdn.com/packs/c... https://global-web-assets.cpcdn.com/packs/css/print-4bd48ce3.css — 200 — 1.1 KiB — 73 ms — h3https://global-web-assets.cpcdn.com/packs/js/runtime-aa718064cb24b23a16a7.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/runtime-aa718064cb24b23a16a7.js — 200 — 7.1 KiB — 101 ms — h3https://global-web-assets.cpcdn.com/packs/js/9674-fd786247d3cad7ec5fb5.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/9674-fd786247d3cad7ec5fb5.js — 200 — 39.3 KiB — 119 ms — h3https://global-web-assets.cpcdn.com/packs/js/cloudwatch_rum-7419805cd3f46aeb6902.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/cloudwatch_rum-7419805cd3f46aeb6902.js — 200 — 1.2 KiB — 80 ms — h3https://use.typekit.net/zbz2cyk.cssuse.typekit.net/zbz2cyk.css https://use.typekit.net/zbz2cyk.css — 200 — 1.0 KiB — 15 ms — h2https://global-web-assets.cpcdn.com/assets/premium/premium_feature/hall_of_fame_recipes-c88c0c3e9b0a9baec1fcd84c066cc9c78eb79f44d4848ba4bac890e5e90e3786.webpglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/premium/premium_feature/hall_of_fame_recipes-c88c0c3e9b0a9baec1fcd84c066cc9c78eb79f44d4848ba4bac890e5e90e3786.webp — 200 — 85.3 KiB — 144 ms — h3https://p.typekit.net/p.css?s=1&k=zbz2cyk&ht=tk&f=40409.40410.40411.40412.40413.40414&a=63657241&app=typekit&e=cssp.typekit.net/p.css?s=1&k=zbz2cyk&h... https://p.typekit.net/p.css?s=1&k=zbz2cyk&ht=tk&f=40409.40410.40411.40412.40413.40414&a=63657241&app=typekit&e=css — 200 — 172 B — 7 ms — h2https://global-web-assets.cpcdn.com/assets/premium/premium_feature/access_rankings-a00e64c1f8635b8c1c34eaf988550afe8a389e92e5940ce77d5314833fdd5703.webpglobal-web-assets.cpcdn.com/assets/... https://global-web-assets.cpcdn.com/assets/premium/premium_feature/access_rankings-a00e64c1f8635b8c1c34eaf988550afe8a389e92e5940ce77d5314833fdd5703.webp — 200 — 123.8 KiB — 87 ms — h3https://cookpad.com/es/webapp_manifest/es/webapp_manifest https://cookpad.com/es/webapp_manifest — 200 — 1.2 KiB — 183 ms — h3https://global-web-assets.cpcdn.com/packs/js/5197-2c9b16242dfb340ebfe4.jsglobal-web-assets.cpcdn.com/packs/j... https://global-web-assets.cpcdn.com/packs/js/5197-2c9b16242dfb340ebfe4.js — 200 — 11.1 KiB — 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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
88% of JavaScript execution is third-party
First-party Third-party 888ms · 219KB · €10/mo
global-web-assets.cpcdn.com
Other
Costly
Execution 267ms
Transfer 18 KB
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 235ms
Transfer 0 KB
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 201ms
Transfer 175 KB
Unused 51%
Monthly Cost €2/mo
global-web-assets.cpcdn.com
Other
Optional
Execution 185ms
Transfer 26 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • global-web-assets.cpcdn.com adds 267ms and costs ~€3/month
  • Unattributable adds 235ms and costs ~€3/month
  • Google Tag Manager adds 201ms and costs ~€2/month

88% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

global-web-assets.cpcdn.com takes 267ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 235ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 201ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

51% 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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