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https://www.adidas.co.uk/men-trainers

Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
5
PASS
17
INFO
3

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

62
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
63
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
80
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.

3.39 s

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

5.31 s

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

435 ms

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

0.017

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

3.39 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.

7.80 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
27
17 PASS 5 REVIEW 2 FIX
D
JS Execution Cost
Action
3454ms total JS execution
FIX
3454ms total JS execution
Warning::
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1...: 1509ms CPU time
Warning::
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1...: 892ms CPU time
Warning::
Unattributable: 402ms CPU time
Info::
https://www.adidas.co.uk/gofipamo/gtag/js: 213ms CPU time
Info::
https://tags.tiqcdn.com/utag/adidas/adidasglobal/p...: 205ms CPU time
Info::
Third-party scripts: 263ms (8% of total)

Main Thread Breakdown

Script Evaluation 79% Other 10% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taVbEcY55G/N0twWkgCAw/UnZ/bBzFUU08Z?v=3234ab01-ea37-cd83-4afe-9a4a5a8b0211&t=174704821509ms1407ms54ms1st
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg892ms750ms63ms1st
Unattributable402ms124ms0ms1st
https://www.adidas.co.uk/gofipamo/gtag/js213ms150ms61ms1st
https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.js205ms175ms27ms3rd
https://www.adidas.co.uk/men-trainers175ms87ms3ms1st
https://se.monetate.net/js/2/a-24f48522/d/adidas.uk.test/custom.js59ms38ms21ms3rd
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: max-age=0, no-cache, no-store
Info::
ETag present — enables conditional (304) responses
Cache-Control

max-age=0, no-cache, no-store

DirectiveValueMeaning
max-age0Cache for 0 seconds
no-cache—Cache but always revalidate first
no-store—Never cache this response
C
JS Bundles
Action
12 scripts, 251 KB unused
REVIEW
12 scripts, 251 KB unused
Warning::
https://www.adidas.co.uk/gofipamo/gtag/js: 99 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://se.monetate.net/js/2/a-24f48522/d/adidas.u...: 50 KB unused (79%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1...: 38 KB unused (20%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1...: 38 KB unused (21%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tags.tiqcdn.com/utag/adidas/adidasglobal/p...: 26 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 251 KB
251 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.adidas.co.uk/gofipamo/gtag/js180 KB99 KB (55%)✓1st
https://se.monetate.net/js/2/a-24f48522/d/adidas.uk.test/custom.js63 KB50 KB (79%)✓3rd
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg194 KB38 KB (20%)✓1st
https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taVbEcY55G/N0twWkgCAw/UnZ/bBzFUU08Z?v=3234ab01-ea37-cd83-4afe-9a4a5a8b0211&t=17470482180 KB38 KB (21%)✓1st
https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.js70 KB26 KB (37%)✓3rd
blob:https://www.adidas.co.uk/4680a3f1-9959-4995-b88d-f7535c93f2550 KB—✓3rd
blob:https://www.adidas.co.uk/2b55c941-e1f6-44be-a348-492c30b71bef0 KB—✓3rd
https://tags.tiqcdn.com/utag/tiqapp/utag.currency.js?utv=ut4.52.2026110412212 KB—✓3rd
https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.349.js?utv=ut4.52.2026030912432 KB—✓3rd
https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.v.js?a=adidas/adidasglobal/202611031334&cb=17938854751500 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

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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
B
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
811 KB transferred, 24 requests
PASS
811 KB transferred, 24 requests
Info::
Page weighs 2.3 MB (811 KB transferred)
Warning::
JavaScript is 693 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 693 KB
Info::
24 HTTP requests
Info::
Estimated 0.17 g CO2 per page load
811 KB / 2.4 MB budget
811 KB transferred
24 requests
0.17 g CO2 per page load
JavaScript 692.9 KiB 85%
Fonts 105.5 KiB 13%
HTML 7.2 KiB 1%
Other 2.1 KiB 0%
CSS 1.4 KiB 0%
Other 1.3 KiB 0%
Other 113 B 0%
0 2.4 MB 4.9 MB
Under 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

A
Third-Party Impact
30% third-party, 0 ms blocking
PASS
30% third-party, 0 ms blocking
Info::
Third-party code accounts for 30% of page weight (246.0 KiB of 810.6 KiB)
Info::
Third-party blocking time is low (0 ms)
70%
30%
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+
Image Optimization
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
3 fonts (106 KB)
PASS
3 fonts (106 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

106 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 FCP 3.4 s LCP 5.3 shttps://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Regular.woffadineuePROCyr-Regular.woff https://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Regular.woff — 40.8 KiB — 61 ms — font-display: swaphttps://www.adidas.com/5280/WAFfailoverassets/fonts/icomoon.wofficomoon.woff https://www.adidas.com/5280/WAFfailoverassets/fonts/icomoon.woff — 15.3 KiB — 61 ms — font-display: swaphttps://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Bold.woffadineuePROCyr-Bold.woff https://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Bold.woff — 49.4 KiB — 61 ms — font-display: swap
adineuePROCyr-Regular.woff woff swap
Size 41 KB
Load time 61 ms
Start 1.8 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
icomoon.woff woff swap
Size 15 KB
Load time 61 ms
Start 1.8 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
adineuePROCyr-Bold.woff woff swap
Size 49 KB
Load time 61 ms
Start 1.8 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 ~32 KB and ~64 ms

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
—
preload
—
dns-prefetch
2
prefetch
—

2 resource hints configured

A
Asset Compression
1 of 1 asset host still on gzip
PASS
1 of 1 asset host still on gzip
Info::
tags.tiqcdn.com serves assets with gzip; brotli would be ~20% smaller (assets: 4)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
Got: tags.tiqcdn.com (application/javascript)
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: max-age=0, no-cache, no-store
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`ETag` present -- conditional GET supported
A
Page Weight Inventory
24 resources · 811 KB · 251 KB savings available
PASS
24 resources · 811 KB · 251 KB savings available
Info::
Within 1MB page-weight target
Got: 811 KB
Info::
~251 KB of savings available
Info::
14 third-party resources (30% of weight)
24 resources · 810.6 KiB · 14 third-party Within 1MB page-weight target
JavaScript 85% · 692.9 KiB
Font 13% · 105.5 KiB
Document 1% · 7.2 KiB
Other 0% · 2.2 KiB
CSS 0% · 1.4 KiB
Image 0% · 1.3 KiB

~250.9 KiB of savings available

Remove unused JavaScript: 250.9 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
A
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
1 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
24 requests over 2412ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 3.4 s LCP 5.3 shttps://www.adidas.co.uk/men-trainers/men-trainers https://www.adidas.co.uk/men-trainers — 200 — 4.1 KiB — 281 ms — h2https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taVbEcY55G/N0twWkgCAw/UnZ/bBzFUU08Z?v=3234ab01-ea37-cd83-4afe-9a4a5a8b0211&t=17470482/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taV... https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taVbEcY55G/N0twWkgCAw/UnZ/bBzFUU08Z?v=3234ab01-ea37-cd83-4afe-9a4a5a8b0211&t=17470482 — 200 — 179.5 KiB — 98 ms — h2https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaV... https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg — 200 — 194.2 KiB — 147 ms — h2https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaV... https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg — 201 — 1.2 KiB — 263 ms — h2https://www.adidas.co.uk/favicon.ico/favicon.ico https://www.adidas.co.uk/favicon.ico — 200 — 1.3 KiB — 133 ms — h2blob:https://www.adidas.co.uk/4680a3f1-9959-4995-b88d-f7535c93f255www.adidas.co.uk/4680a3f1-9959-4995... blob:https://www.adidas.co.uk/4680a3f1-9959-4995-b88d-f7535c93f255 — -1 — 0 B — 0 ms — https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taVbEcY55G/N0twWkgCAw/UnZ/bBzFUU08Z?t=17470482/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taV... https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/b8taVbEcY55G/N0twWkgCAw/UnZ/bBzFUU08Z?t=17470482 — 200 — 917 B — 85 ms — h2https://www.adidas.co.uk/men-trainers/men-trainers https://www.adidas.co.uk/men-trainers — 403 — 3.1 KiB — 138 ms — h2blob:https://www.adidas.co.uk/2b55c941-e1f6-44be-a348-492c30b71befwww.adidas.co.uk/2b55c941-e1f6-44be... blob:https://www.adidas.co.uk/2b55c941-e1f6-44be-a348-492c30b71bef — -1 — 0 B — 0 ms — https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaV... https://www.adidas.co.uk/GTyODP/MHlm_l/hmG/eVAq/s1rwD/iNtaVbEcY55GE77tX1/W2poWkgCAw/LC1/rIjEbXg — -1 — 0 B — 12 ms — https://www.adidas.com/5280/WAFfailoverassets/style.csswww.adidas.com/5280/WAFfailoverasse... https://www.adidas.com/5280/WAFfailoverassets/style.css — 200 — 1.4 KiB — 105 ms — h2https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.jstags.tiqcdn.com/utag/adidas/adidasg... https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.js — 200 — 70.2 KiB — 157 ms — h2https://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Regular.woffwww.adidas.com/5280/WAFfailoverasse... https://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Regular.woff — 200 — 40.8 KiB — 61 ms — h2https://www.adidas.com/5280/WAFfailoverassets/fonts/icomoon.woffwww.adidas.com/5280/WAFfailoverasse... https://www.adidas.com/5280/WAFfailoverassets/fonts/icomoon.woff — 200 — 15.3 KiB — 61 ms — h2https://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Bold.woffwww.adidas.com/5280/WAFfailoverasse... https://www.adidas.com/5280/WAFfailoverassets/fonts/adineuePROCyr-Bold.woff — 200 — 49.4 KiB — 61 ms — h2https://tags.tiqcdn.com/utag/tiqapp/utag.currency.js?utv=ut4.52.202611041221tags.tiqcdn.com/utag/tiqapp/utag.cu... https://tags.tiqcdn.com/utag/tiqapp/utag.currency.js?utv=ut4.52.202611041221 — 200 — 2.2 KiB — 27 ms — h2https://www.adidas.co.uk/gofipamo/gtag/js/gofipamo/gtag/js https://www.adidas.co.uk/gofipamo/gtag/js — 200 — 180.1 KiB — 98 ms — h2https://www.google.com/ccm/geowww.google.com/ccm/geo https://www.google.com/ccm/geo — 200 — 113 B — 67 ms — h3https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.349.js?utv=ut4.52.202603091243tags.tiqcdn.com/utag/adidas/adidasg... https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.349.js?utv=ut4.52.202603091243 — 200 — 1.7 KiB — 27 ms — h2https://www.adidas.co.uk/favicon.ico/favicon.ico https://www.adidas.co.uk/favicon.ico — 200 — 0 B — 1 ms — h2https://se.monetate.net/js/2/a-24f48522/d/adidas.uk.test/custom.jsse.monetate.net/js/2/a-24f48522/d/a... https://se.monetate.net/js/2/a-24f48522/d/adidas.uk.test/custom.js — 200 — 63.5 KiB — 62 ms — h2https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.v.js?a=adidas/adidasglobal/202611031334&cb=1793885475150tags.tiqcdn.com/utag/adidas/adidasg... https://tags.tiqcdn.com/utag/adidas/adidasglobal/prod/utag.v.js?a=adidas/adidasglobal/202611031334&cb=1793885475150 — 200 — 432 B — 28 ms — h2https://www.googletagmanager.com/gtag/js?id=G-4DGGV4HV95&gtg_health=1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-4DGGV4HV95&gtg_health=1 — 200 — 385 B — 115 ms — h2https://f.monetate.net/trk/4/s/a-24f48522/d/adidas.uk.test/2049087976-0?mr=t1753417694&mi=%272.282111132.1793885475234%27&cs=!t&e=!(viewPage,gr,gt)&pt=ERROR&r=%27https://www.adidas.co.uk/men-trainers%27&sw=412&sh=823&sc=24&j=!f&u=%27https://www.adidas.co.uk/men-trainers%27&fl=!f&hvc=!t&eoq=!tf.monetate.net/trk/4/s/a-24f48522/d... https://f.monetate.net/trk/4/s/a-24f48522/d/adidas.uk.test/2049087976-0?mr=t1753417694&mi=%272.282111132.1793885475234%27&cs=!t&e=!(viewPage,gr,gt)&pt=ERROR&r=%27https://www.adidas.co.uk/men-trainers%27&sw=412&sh=823&sc=24&j=!f&u=%27https://www.adidas.co.uk/men-trainers%27&fl=!f&hvc=!t&eoq=!t — 200 — 657 B — 191 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
8% of JavaScript execution is third-party
First-party Third-party 263ms · 134KB · €3/mo
tags.tiqcdn.com
Other
Costly
Execution 205ms
Transfer 70 KB
Unused 37%
Monthly Cost €2/mo
se.monetate.net
Other
Optional
Execution 59ms
Transfer 63 KB
Unused 79%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • tags.tiqcdn.com adds 205ms and costs ~€2/month

tags.tiqcdn.com takes 205ms 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

79% of se.monetate.net'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

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-10-07 — 2026-11-03)

LCP (p75)

1216 ms

94% good

INP (p75)

190 ms

77% good

CLS (p75)

0.030

89% good

FCP (p75)

1163 ms

TTFB (p75)

443 ms

This origin passes Core Web Vitals assessment
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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