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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
5
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
41
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.

1.41 s

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

2.42 s

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

450 ms

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

0.305

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

2.95 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.

3.01 s

Page Load Progression

527 ms
1.1 s
1.6 s
2.1 s
2.6 s
3.2 s
3.7 s
4.2 s
Checks
15
6 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
2.9 MB transferred, 55 requests
FIX
2.9 MB transferred, 55 requests
Warning::
Page weighs 7.2 MB (2.9 MB transferred)
Warning::
Images are 1.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.5 MB
Warning::
JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Info::
55 HTTP requests
Info::
Estimated 0.61 g CO2 per page load
2.9 MB / 2.4 MB budget
2.9 MB transferred
55 requests
0.61 g CO2 per page load
Images 1.5 MiB 51%
JavaScript 1.0 MiB 36%
Fonts 136.8 KiB 5%
Other 92.7 KiB 3%
HTML 83.7 KiB 3%
CSS 80.1 KiB 3%
Other 2.7 KiB 0%
Other 2.7 KiB 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

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.9 MiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
3806ms total JS execution
FIX
3806ms total JS execution
Warning::
https://www.basf.com/main.a2401690b64a7e50.js: 2538ms CPU time
Warning::
https://www.basf.com/sg/en: 604ms CPU time
Warning::
Unattributable: 325ms CPU time
Info::
https://www.basf.com/polyfills.46b4b402e725ddee.js: 244ms CPU time
Info::
https://cdn.cookielaw.org/scripttemplates/202508.2...: 94ms CPU time
Warning::
Third-party scripts: 3806ms (100% of total)

Main Thread Breakdown

Script Evaluation 38% Parse HTML & CSS 37% Other 10% Style & Layout 9% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.basf.com/main.a2401690b64a7e50.js2538ms1226ms10ms3rd
https://www.basf.com/sg/en604ms2ms0ms3rd
Unattributable325ms57ms0ms3rd
https://www.basf.com/polyfills.46b4b402e725ddee.js244ms73ms0ms3rd
https://cdn.cookielaw.org/scripttemplates/202508.2.0/otBannerSdk.js94ms58ms16ms3rd
F
JS Bundles
Action
14 scripts, 515 KB unused
FIX
14 scripts, 515 KB unused
Warning::
https://www.basf.com/main.a2401690b64a7e50.js: 453 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202508.2...: 62 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 515 KB
515 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.basf.com/main.a2401690b64a7e50.js864 KB453 KB (53%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202508.2.0/otBannerSdk.js121 KB62 KB (51%)✓3rd
https://www.basf.com/7907.b93b0963c6abfb96.js4 KB—✓3rd
https://blackberry.basf.com/wxp/prod/utag.js27 KB—✓3rd
https://www.basf.com/common.35c790705008dd57.js11 KB—✓3rd
https://www.basf.com/131.21a6094f7626eb56.js2 KB—✓3rd
https://www.basf.com/runtime.a8191b0c48a9578c.js4 KB—✓3rd
https://www.basf.com/8945.f4b86e4d988369f6.js4 KB—✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js9 KB—✓3rd
https://blackberry.basf.com/wxp/prod/utag.v.js?a=basf/wxp/202604130842&cb=17768109051250 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

F
Page Weight Inventory
Action
55 resources · 2.9 MB · 515 KB savings available
FIX
55 resources · 2.9 MB · 515 KB savings available
Warning::
Page weight 1.9 MB over 1MB target
Got: 2.9 MB Expected: ≤ 1 MB
Info::
~515 KB of savings available
Warning::
54 third-party resources (100% of weight)
Info::
4 resources over 200KB
55 resources · 2.9 MiB · 54 third-party 1.9 MiB over 1MB target
Image 51% · 1.5 MiB
JavaScript 36% · 1.0 MiB
Font 5% · 136.8 KiB
Other 3% · 90.5 KiB
Document 3% · 84.8 KiB
CSS 3% · 84.6 KiB

~515.1 KiB of savings available

Remove unused JavaScript: 515.1 KiB
B
Image Optimization
14 images, 0 KB saveable
REVIEW
14 images, 0 KB saveable
Info::
All images are well-optimized
14 images 1.5 MB
0 oversized -0 KB
4 legacy format
0 missing dimensions CLS risk
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
4 fonts (137 KB)
PASS
4 fonts (137 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

137 KB total

Render-blocking

0

of 4

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 2.5 s FCP 1.4 s LCP 2.4 shttps://www.basf.com/6b43fb6d-89b8-4c64-a8e0-c8fb1f66f40f.b6d9e19f61ba7e29.woff26b43fb6d-89b8-4c64-a8e0... https://www.basf.com/6b43fb6d-89b8-4c64-a8e0-c8fb1f66f40f.b6d9e19f61ba7e29.woff2 — 42.5 KiB — 10 ms — font-display: swaphttps://www.basf.com/800da3b0-675f-465f-892d-d76cecbdd5b1.9ef1925145b9501e.woff2800da3b0-675f-465f-892d... https://www.basf.com/800da3b0-675f-465f-892d-d76cecbdd5b1.9ef1925145b9501e.woff2 — 29.0 KiB — 17 ms — font-display: swaphttps://www.basf.com/assets/fonts/wxp/ac7a478a4cfbfffdd61cf962698af0ce/wxp-icons.woff2?ba3e1f5f2cb667030dfb9fed6576ec77wxp-icons.woff2 https://www.basf.com/assets/fonts/wxp/ac7a478a4cfbfffdd61cf962698af0ce/wxp-icons.woff2?ba3e1f5f2cb667030dfb9fed6576ec77 — 23.4 KiB — 18 ms — font-display: swaphttps://www.basf.com/5ab020b6-67c6-4666-95ee-09cce0e39f2f.b6b90157904bef74.woff25ab020b6-67c6-4666-95ee... https://www.basf.com/5ab020b6-67c6-4666-95ee-09cce0e39f2f.b6b90157904bef74.woff2 — 42.0 KiB — 13 ms — font-display: swap
6b43fb6d-89b8-4c64-a8e0... woff2 swap
Size 42 KB
Load time 10 ms
Start 890 ms
Risk FOUT — text flashes from fallback to web font
800da3b0-675f-465f-892d... woff2 swap
Size 29 KB
Load time 17 ms
Start 890 ms
Risk FOUT — text flashes from fallback to web font
wxp-icons.woff2 woff2 swap
Size 23 KB
Load time 18 ms
Start 891 ms
Risk FOUT — text flashes from fallback to web font
5ab020b6-67c6-4666-95ee... woff2 swap
Size 42 KB
Load time 13 ms
Start 895 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
HTTP Caching
max-age=300 (5 minutes)
PASS
max-age=300 (5 minutes)
Info::
Cache-Control header is set
Got: max-age=300
Info::
Effective TTL: 5 minutes (max-age=300)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=300

DirectiveValueMeaning
max-age300Cache for 5 minutes
Effective TTL: 300 seconds
Network Waterfall
55 requests over 5126ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 1.4 s LCP 2.4 shttps://basf.com// https://basf.com/ — 308 — 80 B — 482 ms — h2https://www.basf.com/www.basf.com/ https://www.basf.com/ — 308 — 1.1 KiB — 196 ms — h2https://www.basf.com/sg/enwww.basf.com/sg/en https://www.basf.com/sg/en — 200 — 83.7 KiB — 15 ms — h2https://www.basf.com/runtime.a8191b0c48a9578c.jswww.basf.com/runtime.a8191b0c48a957... https://www.basf.com/runtime.a8191b0c48a9578c.js — 200 — 4.2 KiB — 17 ms — h3https://www.basf.com/polyfills.46b4b402e725ddee.jswww.basf.com/polyfills.46b4b402e725... https://www.basf.com/polyfills.46b4b402e725ddee.js — 200 — 13.3 KiB — 18 ms — h3https://www.basf.com/main.a2401690b64a7e50.jswww.basf.com/main.a2401690b64a7e50.... https://www.basf.com/main.a2401690b64a7e50.js — 200 — 864.1 KiB — 92 ms — h3https://www.basf.com/grid-angular.2cbb09b329304d0b.csswww.basf.com/grid-angular.2cbb09b32... https://www.basf.com/grid-angular.2cbb09b329304d0b.css — 200 — 5.3 KiB — 28 ms — h3https://www.basf.com/wxp-commerce.fcb043ecc401cb6a.csswww.basf.com/wxp-commerce.fcb043ecc... https://www.basf.com/wxp-commerce.fcb043ecc401cb6a.css — 200 — 6.2 KiB — 36 ms — h3https://www.basf.com/atoms-core.1a6071f8698cb027.csswww.basf.com/atoms-core.1a6071f8698... https://www.basf.com/atoms-core.1a6071f8698cb027.css — 200 — 60.4 KiB — 46 ms — h3https://www.basf.com/wxp-core.8e464d336f414c19.csswww.basf.com/wxp-core.8e464d336f414... https://www.basf.com/wxp-core.8e464d336f414c19.css — 200 — 5.2 KiB — 37 ms — h3https://www.basf.com/wxp-theme.024e05bdea0085c4.csswww.basf.com/wxp-theme.024e05bdea00... https://www.basf.com/wxp-theme.024e05bdea0085c4.css — 200 — 2.9 KiB — 34 ms — h3https://www.basf.com/assets/logo.v1.svgwww.basf.com/assets/logo.v1.svg https://www.basf.com/assets/logo.v1.svg — 200 — 4.7 KiB — 16 ms — h3https://www.basf.com/6b43fb6d-89b8-4c64-a8e0-c8fb1f66f40f.b6d9e19f61ba7e29.woff2www.basf.com/6b43fb6d-89b8-4c64-a8e... https://www.basf.com/6b43fb6d-89b8-4c64-a8e0-c8fb1f66f40f.b6d9e19f61ba7e29.woff2 — 200 — 42.5 KiB — 10 ms — h3https://www.basf.com/800da3b0-675f-465f-892d-d76cecbdd5b1.9ef1925145b9501e.woff2www.basf.com/800da3b0-675f-465f-892... https://www.basf.com/800da3b0-675f-465f-892d-d76cecbdd5b1.9ef1925145b9501e.woff2 — 200 — 29.0 KiB — 17 ms — h3https://www.basf.com/assets/fonts/wxp/ac7a478a4cfbfffdd61cf962698af0ce/wxp-icons.woff2?ba3e1f5f2cb667030dfb9fed6576ec77www.basf.com/assets/fonts/wxp/ac7a4... https://www.basf.com/assets/fonts/wxp/ac7a478a4cfbfffdd61cf962698af0ce/wxp-icons.woff2?ba3e1f5f2cb667030dfb9fed6576ec77 — 200 — 23.4 KiB — 18 ms — h3https://www.basf.com/5ab020b6-67c6-4666-95ee-09cce0e39f2f.b6b90157904bef74.woff2www.basf.com/5ab020b6-67c6-4666-95e... https://www.basf.com/5ab020b6-67c6-4666-95ee-09cce0e39f2f.b6b90157904bef74.woff2 — 200 — 42.0 KiB — 13 ms — h3https://blackberry.basf.com/wxp/prod/utag.jsblackberry.basf.com/wxp/prod/utag.j... https://blackberry.basf.com/wxp/prod/utag.js — 200 — 26.9 KiB — 219 ms — h2https://www.basf.com/assets/i18n/commerce/en-US.jsonwww.basf.com/assets/i18n/commerce/e... https://www.basf.com/assets/i18n/commerce/en-US.json — 200 — 31.9 KiB — 34 ms — h3https://www.basf.com/assets/i18n/common/en.jsonwww.basf.com/assets/i18n/common/en.... https://www.basf.com/assets/i18n/common/en.json — 200 — 8.3 KiB — 32 ms — h3https://www.basf.com/assets/i18n/en.jsonwww.basf.com/assets/i18n/en.json https://www.basf.com/assets/i18n/en.json — 200 — 1.1 KiB — 29 ms — h3https://www.basf.com/assets/i18n/commerce/en-US.jsonwww.basf.com/assets/i18n/commerce/e... https://www.basf.com/assets/i18n/commerce/en-US.json — 200 — 1.0 KiB — 21 ms — h3https://www.basf.com/assets/i18n/common/en.jsonwww.basf.com/assets/i18n/common/en.... https://www.basf.com/assets/i18n/common/en.json — 200 — 1.0 KiB — 19 ms — h3https://www.basf.com/assets/i18n/en.jsonwww.basf.com/assets/i18n/en.json https://www.basf.com/assets/i18n/en.json — 200 — 1.0 KiB — 16 ms — h3https://www.basf.com/api/content/geo/v1/switch/basf/www/sg/enwww.basf.com/api/content/geo/v1/swi... https://www.basf.com/api/content/geo/v1/switch/basf/www/sg/en — 200 — 3.4 KiB — 10 ms — h3https://www.basf.com/common.35c790705008dd57.jswww.basf.com/common.35c790705008dd5... https://www.basf.com/common.35c790705008dd57.js — 200 — 11.1 KiB — 11 ms — h3https://www.basf.com/131.21a6094f7626eb56.jswww.basf.com/131.21a6094f7626eb56.j... https://www.basf.com/131.21a6094f7626eb56.js — 200 — 1.8 KiB — 7 ms — h3https://www.basf.com/7907.b93b0963c6abfb96.jswww.basf.com/7907.b93b0963c6abfb96.... https://www.basf.com/7907.b93b0963c6abfb96.js — 200 — 4.1 KiB — 10 ms — h3https://www.basf.com/8945.f4b86e4d988369f6.jswww.basf.com/8945.f4b86e4d988369f6.... https://www.basf.com/8945.f4b86e4d988369f6.js — 200 — 4.2 KiB — 10 ms — h3https://www.basf.com/api/imaging/focalarea/16x9/414x/dam/jcr%3A1e6c45a6-f66b-4974-bb00-42c5a70cac08/teaser-fy-2025.png?vid=bxQeFU7gmO4hNZhfPNYCBSpJ.UjnGBf5www.basf.com/api/imaging/focalarea/... https://www.basf.com/api/imaging/focalarea/16x9/414x/dam/jcr%3A1e6c45a6-f66b-4974-bb00-42c5a70cac08/teaser-fy-2025.png?vid=bxQeFU7gmO4hNZhfPNYCBSpJ.UjnGBf5 — 200 — 18.9 KiB — 12 ms — h3https://www.basf.com/api/imaging/focalarea/16x9/414x/dam/jcr%3A5115b19f-1531-438d-a0f4-094c77a8e17e/teaser-strategy.jpg?vid=H1SRr.Gw3raGuCYQS.gmLI8gambjmbUhwww.basf.com/api/imaging/focalarea/... https://www.basf.com/api/imaging/focalarea/16x9/414x/dam/jcr%3A5115b19f-1531-438d-a0f4-094c77a8e17e/teaser-strategy.jpg?vid=H1SRr.Gw3raGuCYQS.gmLI8gambjmbUh — 200 — 33.2 KiB — 12 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 1.4 s LCP 2.4 shttps://basf.com// https://basf.com/ — 308 — 80 B — 482 ms — h2https://www.basf.com/www.basf.com/ https://www.basf.com/ — 308 — 1.1 KiB — 196 ms — h2https://www.basf.com/sg/enwww.basf.com/sg/en https://www.basf.com/sg/en — 200 — 83.7 KiB — 15 ms — h2https://www.basf.com/runtime.a8191b0c48a9578c.jswww.basf.com/runtime.a8191b0c48a957... https://www.basf.com/runtime.a8191b0c48a9578c.js — 200 — 4.2 KiB — 17 ms — h3https://www.basf.com/polyfills.46b4b402e725ddee.jswww.basf.com/polyfills.46b4b402e725... https://www.basf.com/polyfills.46b4b402e725ddee.js — 200 — 13.3 KiB — 18 ms — h3https://www.basf.com/main.a2401690b64a7e50.jswww.basf.com/main.a2401690b64a7e50.... https://www.basf.com/main.a2401690b64a7e50.js — 200 — 864.1 KiB — 92 ms — h3https://www.basf.com/grid-angular.2cbb09b329304d0b.csswww.basf.com/grid-angular.2cbb09b32... https://www.basf.com/grid-angular.2cbb09b329304d0b.css — 200 — 5.3 KiB — 28 ms — h3https://www.basf.com/wxp-commerce.fcb043ecc401cb6a.csswww.basf.com/wxp-commerce.fcb043ecc... https://www.basf.com/wxp-commerce.fcb043ecc401cb6a.css — 200 — 6.2 KiB — 36 ms — h3https://www.basf.com/atoms-core.1a6071f8698cb027.csswww.basf.com/atoms-core.1a6071f8698... https://www.basf.com/atoms-core.1a6071f8698cb027.css — 200 — 60.4 KiB — 46 ms — h3https://www.basf.com/wxp-core.8e464d336f414c19.csswww.basf.com/wxp-core.8e464d336f414... https://www.basf.com/wxp-core.8e464d336f414c19.css — 200 — 5.2 KiB — 37 ms — h3https://www.basf.com/wxp-theme.024e05bdea0085c4.csswww.basf.com/wxp-theme.024e05bdea00... https://www.basf.com/wxp-theme.024e05bdea0085c4.css — 200 — 2.9 KiB — 34 ms — h3https://www.basf.com/assets/logo.v1.svgwww.basf.com/assets/logo.v1.svg https://www.basf.com/assets/logo.v1.svg — 200 — 4.7 KiB — 16 ms — h3https://www.basf.com/6b43fb6d-89b8-4c64-a8e0-c8fb1f66f40f.b6d9e19f61ba7e29.woff2www.basf.com/6b43fb6d-89b8-4c64-a8e... https://www.basf.com/6b43fb6d-89b8-4c64-a8e0-c8fb1f66f40f.b6d9e19f61ba7e29.woff2 — 200 — 42.5 KiB — 10 ms — h3https://www.basf.com/800da3b0-675f-465f-892d-d76cecbdd5b1.9ef1925145b9501e.woff2www.basf.com/800da3b0-675f-465f-892... https://www.basf.com/800da3b0-675f-465f-892d-d76cecbdd5b1.9ef1925145b9501e.woff2 — 200 — 29.0 KiB — 17 ms — h3https://www.basf.com/assets/fonts/wxp/ac7a478a4cfbfffdd61cf962698af0ce/wxp-icons.woff2?ba3e1f5f2cb667030dfb9fed6576ec77www.basf.com/assets/fonts/wxp/ac7a4... https://www.basf.com/assets/fonts/wxp/ac7a478a4cfbfffdd61cf962698af0ce/wxp-icons.woff2?ba3e1f5f2cb667030dfb9fed6576ec77 — 200 — 23.4 KiB — 18 ms — h3https://www.basf.com/5ab020b6-67c6-4666-95ee-09cce0e39f2f.b6b90157904bef74.woff2www.basf.com/5ab020b6-67c6-4666-95e... https://www.basf.com/5ab020b6-67c6-4666-95ee-09cce0e39f2f.b6b90157904bef74.woff2 — 200 — 42.0 KiB — 13 ms — h3https://blackberry.basf.com/wxp/prod/utag.jsblackberry.basf.com/wxp/prod/utag.j... 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— 501 B — 15 ms — h2https://cdn.cookielaw.org/logos/c2865ede-f680-4064-81ba-dd4275d53582/cf7700ac-b240-4d71-bdd2-b974dc2b220a/769f7ccc-4565-4279-84b2-36c8d9e260f3/BASF_Logo_BLUE_OneTrust.jpgcdn.cookielaw.org/logos/c2865ede-f6... https://cdn.cookielaw.org/logos/c2865ede-f680-4064-81ba-dd4275d53582/cf7700ac-b240-4d71-bdd2-b974dc2b220a/769f7ccc-4565-4279-84b2-36c8d9e260f3/BASF_Logo_BLUE_OneTrust.jpg — 200 — 59.0 KiB — 20 ms — h2https://cdn.cookielaw.org/logos/static/powered_by_logo.svgcdn.cookielaw.org/logos/static/powe... https://cdn.cookielaw.org/logos/static/powered_by_logo.svg — 200 — 2.5 KiB — 14 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 3806ms · 1082KB · $51/mo
www.basf.com
Other
Costly
Execution 2538ms
Transfer 864 KB
Unused 53%
Monthly Cost $34/mo
www.basf.com
Other
Costly
Execution 604ms
Transfer 84 KB
Monthly Cost $8/mo
Unattributable
Other
Costly
Execution 325ms
Transfer 0 KB
Monthly Cost $4/mo
www.basf.com
Other
Costly
Execution 244ms
Transfer 13 KB
Monthly Cost $3/mo
OneTrust
Consent
Essential
Execution 94ms
Transfer 121 KB
Unused 51%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.basf.com adds 2538ms and costs ~$34/month
  • www.basf.com adds 604ms and costs ~$8/month
  • Unattributable adds 325ms and costs ~$4/month
  • www.basf.com adds 244ms and costs ~$3/month

100% 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

www.basf.com takes 2538ms 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

53% of www.basf.com'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

www.basf.com takes 604ms 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 325ms 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

www.basf.com takes 244ms 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 OneTrust'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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