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https://sika.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
0
PASS
11
INFO
2

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

0
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
77
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
69
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.

4.20 s

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

0 ms

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.

0.000

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

10.54 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.

0 ms

Page Load Progression

492 ms
984 ms
1.5 s
2.0 s
2.5 s
3.0 s
3.4 s
3.9 s
Checks
17
11 PASS 4 FIX
F
Page Weight Budget
Action
16.3 MB transferred, 75 requests
FIX
16.3 MB transferred, 75 requests
Critical::
Page weighs 34.4 MB (16.3 MB transferred)
Warning::
JavaScript is 4.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 4.3 MB
Info::
75 HTTP requests
Info::
Estimated 3.4 g CO2 per page load
16.3 MB / 2.4 MB budget
16.3 MB transferred
75 requests
3.4 g CO2 per page load
Other 11.0 MiB 67%
JavaScript 4.3 MiB 27%
Images 628.0 KiB 4%
CSS 184.4 KiB 1%
Fonts 124.8 KiB 1%
HTML 24.0 KiB 0%
Other 5.1 KiB 0%
Other 1.3 KiB 0%
Other 130 B 0%
0 2.4 MB 4.9 MB
Over budget

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 (16.3 MiB of 16.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5323ms total JS execution
FIX
5323ms total JS execution
Warning::
https://www.sika.com/etc.clientlibs/sika/clientlib...: 3403ms CPU time
Warning::
https://www.sika.com/: 776ms CPU time
Warning::
Unattributable: 581ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5JM...: 563ms CPU time
Warning::
Third-party scripts: 5323ms (100% of total)

Main Thread Breakdown

Script Parsing & Compilation 40% Script Evaluation 26% Other 14% Style & Layout 12% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-base.lc-f02ab505dffcf3ff1c54c773778c3f6d-lc.min.js3403ms854ms2048ms3rd
https://www.sika.com/776ms43ms4ms3rd
Unattributable581ms13ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5JM3WCQM563ms457ms94ms3rd
D
Page Weight Inventory
Action
75 resources · 16.3 MB · 0 KB savings available
FIX
75 resources · 16.3 MB · 0 KB savings available
Warning::
Page weight 15.3 MB over 1MB target
Got: 16.3 MB Expected: ≤ 1 MB
Warning::
74 third-party resources (100% of weight)
Info::
3 resources over 200KB
75 resources · 16.3 MiB · 74 third-party 15.3 MiB over 1MB target
Media 67% · 11.0 MiB
JavaScript 27% · 4.3 MiB
Image 4% · 629.1 KiB
CSS 1% · 184.4 KiB
Font 1% · 124.8 KiB
Document 0% · 24.1 KiB
Other 0% · 5.3 KiB
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
Image Optimization
15 images, 0 KB saveable
PASS
15 images, 0 KB saveable
Warning::
https://sika.scene7.com/is/image/sika/Sika_NoClaim... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://sika.scene7.com/is/image/sikacs/glo-hero-j... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
15 images 628 KB
0 oversized -0 KB
1 legacy format
2 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

A+
Font Loading
4 fonts (125 KB)
PASS
4 fonts (125 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

125 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 1.0 s 2.0 s 3.0 s 4.0 s FCP 4.2 shttps://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicRegular.woffKlavikaWebBasicRegular.... https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicRegular.woff — 31.1 KiB — 111 ms — font-display: swaphttps://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicLight.woffKlavikaWebBasicLight.woff https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicLight.woff — 31.6 KiB — 111 ms — font-display: swaphttps://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicMedium.woffKlavikaWebBasicMedium.woff https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicMedium.woff — 30.5 KiB — 110 ms — font-display: swaphttps://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicLightItalic.woffKlavikaWebBasicLightIta... https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui/resources/fonts/KlavikaWebBasicLightItalic.woff — 31.6 KiB — 39 ms — font-display: swap
KlavikaWebBasicRegular.... woff swap
Size 31 KB
Load time 111 ms
Start 399 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
KlavikaWebBasicLight.woff woff swap
Size 32 KB
Load time 111 ms
Start 400 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
KlavikaWebBasicMedium.woff woff swap
Size 30 KB
Load time 110 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
KlavikaWebBasicLightIta... woff swap
Size 32 KB
Load time 39 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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)

Fixing the unchecked items could save ~37 KB and ~74 ms

A+
JS Bundles
15 scripts, 0 KB unused
PASS
15 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js0 KB3rd
https://www.sika.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js1 KB3rd
https://www.sika.com/content/dam/media/corp/corp-microsite/jquery-3.7.1.min.js31 KB3rd
https://tools.euroland.com/tools/common/eurolandiframeautoheight/eurolandtoolsintegrationobject.js5 KB3rd
https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-base.lc-f02ab505dffcf3ff1c54c773778c3f6d-lc.min.js4211 KB3rd
https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c12417176891760157 KB3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5JM3WCQM194 KB3rd
https://tools.eurolandir.com/tools/common/EurolandIFrameAutoHeight/EurolandToolAutoSizeObject.js0 KB3rd
https://tools.eurolandir.com/tools/ticker/bundles/static.js?v=5mr27QMv8PIAJ6bYNHPA93C88FTktzvceBXBz0hg9lY10 KB3rd
https://tools.eurolandir.com/tools/ticker/Scripts/ScrollingTicker/realtime.extension.js0 KB3rd
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+
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
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

A
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=3600

DirectiveValueMeaning
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
75 requests over 1655ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 4.2 shttps://sika.com// https://sika.com/ — 301 — 152 B — 69 ms — h2https://www.sika.com/www.sika.com/ https://www.sika.com/ — 200 — 16.9 KiB — 104 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — -1 — 0 B — 68 ms — https://www.sika.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.jswww.sika.com/.rum/@adobe/helix-rum-... https://www.sika.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js — 200 — 1011 B — 97 ms — h2https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-base.lc-ced1d4dd5dd9dc0a10be5b081943543d-lc.min.csswww.sika.com/etc.clientlibs/sika/cl... https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-base.lc-ced1d4dd5dd9dc0a10be5b081943543d-lc.min.css — 200 — 66.5 KiB — 48 ms — h2https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui.lc-68b29f5d7ab71b29f0497786bf9eb162-lc.min.csswww.sika.com/etc.clientlibs/sika/cl... https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-sika-ui.lc-68b29f5d7ab71b29f0497786bf9eb162-lc.min.css — 200 — 107.9 KiB — 68 ms — h2https://www.sika.com/content/dam/media/corp/corp-microsite/css/animate.csswww.sika.com/content/dam/media/corp... https://www.sika.com/content/dam/media/corp/corp-microsite/css/animate.css — 200 — 5.4 KiB — 67 ms — h2https://www.sika.com/content/dam/media/corp/corp-microsite/css/custom.csswww.sika.com/content/dam/media/corp... https://www.sika.com/content/dam/media/corp/corp-microsite/css/custom.css — 200 — 524 B — 66 ms — h2https://www.sika.com/content/dam/media/corp/corp-microsite-v2/css/business-block-2026.csswww.sika.com/content/dam/media/corp... https://www.sika.com/content/dam/media/corp/corp-microsite-v2/css/business-block-2026.css — 200 — 4.1 KiB — 45 ms — h2https://www.sika.com/content/dam/media/corp/corp-microsite/jquery-3.7.1.min.jswww.sika.com/content/dam/media/corp... https://www.sika.com/content/dam/media/corp/corp-microsite/jquery-3.7.1.min.js — 200 — 31.0 KiB — 66 ms — h2https://sika.scene7.com/is/image/sika/Sika_NoClaim_pos_rgb_mobile?wid=320&hei=277&fit=crop%2C1&fmt=webp-alphasika.scene7.com/is/image/sika/Sika_... https://sika.scene7.com/is/image/sika/Sika_NoClaim_pos_rgb_mobile?wid=320&hei=277&fit=crop%2C1&fmt=webp-alpha — 200 — 10.1 KiB — 223 ms — h2https://sika.scene7.com/is/image/sikacs/glo-hero-january-2026-05443557?wid=960&hei=540&fit=crop%2C1&fmt=webp-alphasika.scene7.com/is/image/sikacs/glo... https://sika.scene7.com/is/image/sikacs/glo-hero-january-2026-05443557?wid=960&hei=540&fit=crop%2C1&fmt=webp-alpha — 200 — 67.3 KiB — 332 ms — h2https://www.sika.com/content/dam/media/corp/financial-reports/annual-report-2025/glo-ar-25-marienhof-muenchen-cover-DSC1939.jpg.adaptive.768.jpgwww.sika.com/content/dam/media/corp... https://www.sika.com/content/dam/media/corp/financial-reports/annual-report-2025/glo-ar-25-marienhof-muenchen-cover-DSC1939.jpg.adaptive.768.jpg — 200 — 296.6 KiB — 122 ms — h2https://sika.scene7.com/is/image/sika/glo-strategy-2028-beyond-the-expected?wid=960&hei=719&fit=crop%2C1&fmt=webp-alphasika.scene7.com/is/image/sika/glo-s... https://sika.scene7.com/is/image/sika/glo-strategy-2028-beyond-the-expected?wid=960&hei=719&fit=crop%2C1&fmt=webp-alpha — 200 — 36.4 KiB — 193 ms — h2https://tools.euroland.com/tools/common/eurolandiframeautoheight/eurolandtoolsintegrationobject.jstools.euroland.com/tools/common/eur... https://tools.euroland.com/tools/common/eurolandiframeautoheight/eurolandtoolsintegrationobject.js — 200 — 5.0 KiB — 258 ms — h2https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-base.lc-f02ab505dffcf3ff1c54c773778c3f6d-lc.min.jswww.sika.com/etc.clientlibs/sika/cl... https://www.sika.com/etc.clientlibs/sika/clientlibs/clientlib-base.lc-f02ab505dffcf3ff1c54c773778c3f6d-lc.min.js — 200 — 4.1 MiB — 284 ms — h2https://sika.scene7.com/is/image/sikacs/glo-ar-2023-wind-farm-sustainability-01880794?wid=960&hei=640&fit=crop%2C1&fmt=webp-alphasika.scene7.com/is/image/sikacs/glo... https://sika.scene7.com/is/image/sikacs/glo-ar-2023-wind-farm-sustainability-01880794?wid=960&hei=640&fit=crop%2C1&fmt=webp-alpha — 200 — 66.5 KiB — 183 ms — h2https://sika.scene7.com/is/image/sikacs/glo-SustainablySika-Diversity-250383-for-website-teaser-05603842?wid=960&hei=960&fit=crop%2C1&fmt=webp-alphasika.scene7.com/is/image/sikacs/glo... https://sika.scene7.com/is/image/sikacs/glo-SustainablySika-Diversity-250383-for-website-teaser-05603842?wid=960&hei=960&fit=crop%2C1&fmt=webp-alpha — 200 — 76.9 KiB — 195 ms — h2https://sika.scene7.com/is/image/sikacs/glo-ar-2023-battersea-power-station-london-01168122?wid=960&hei=640&fit=crop%2C1&fmt=webp-alphasika.scene7.com/is/image/sikacs/glo... https://sika.scene7.com/is/image/sikacs/glo-ar-2023-battersea-power-station-london-01168122?wid=960&hei=640&fit=crop%2C1&fmt=webp-alpha — 200 — 74.0 KiB — 228 ms — h2https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015 — 200 — 6.9 KiB — 108 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-5JM3WCQMwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-5JM3WCQM — 200 — 194.4 KiB — 181 ms — h2data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzODQwIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzODQwIiBoZ… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMjEyIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMjEyIiBoZ… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxODAwIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxODAwIiBoZ… — 200 — 0 B — 0 ms — datahttps://tools.eurolandir.com/tools/ticker/html/?companycode=ch-sik&v=r2025&lang=en-GBtools.eurolandir.com/tools/ticker/h... https://tools.eurolandir.com/tools/ticker/html/?companycode=ch-sik&v=r2025&lang=en-GB — 200 — 3.5 KiB — 261 ms — h2https://sika.scene7.com/is/content/sikacs/glo-hero-january-2026-05841731sika.scene7.com/is/content/sikacs/g... https://sika.scene7.com/is/content/sikacs/glo-hero-january-2026-05841731 — 206 — 11.0 MiB — 7 ms — h2data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=… — 200 — 0 B — 0 ms — datadata:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height=… — 200 — 0 B — 0 ms — data
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data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2MjI0IiBoZ… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAwIiBoZ… — 200 — 0 B — 0 ms — data
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 5323ms · 4422KB · CHF81/mo
www.sika.com
Other
Costly
Execution 3403ms
Transfer 4211 KB
Monthly Cost CHF52/mo
www.sika.com
Other
Costly
Execution 776ms
Transfer 17 KB
Monthly Cost CHF12/mo
Unattributable
Other
Costly
Execution 581ms
Transfer 0 KB
Monthly Cost CHF9/mo
Google Tag Manager
Tag Manager
Costly
Execution 563ms
Transfer 194 KB
Monthly Cost CHF9/mo

These scripts may cost more than they're worth

  • www.sika.com adds 3403ms and costs ~CHF52/month
  • www.sika.com adds 776ms and costs ~CHF12/month
  • Unattributable adds 581ms and costs ~CHF9/month
  • Google Tag Manager adds 563ms and costs ~CHF9/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.sika.com takes 3403ms 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.sika.com takes 776ms 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 581ms 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 563ms 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

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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