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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
2
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

1.45 s

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

1.69 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.

1.000

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

1.45 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.

1.69 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
9 PASS 2 REVIEW 2 FIX
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 (1.0 MiB of 1.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
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
5 images, 0 KB saveable
REVIEW
5 images, 0 KB saveable
Warning::
https://i0.gmx.net/image/474/41652474,pd=4,h=1820,... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
5 images 53 KB
0 oversized -0 KB
4 legacy format
1 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

B
JS Bundles
30 scripts, 125 KB unused
REVIEW
30 scripts, 125 KB unused
Warning::
https://js.ui-portal.de/netid/cmp/release/v1/gmx/a...: 43 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://js.ui-portal.de/tamago/2.5.0/tamago.js?log...: 35 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.mi...: 23 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.mi...: 23 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 125 KB
125 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://js.ui-portal.de/netid/cmp/release/v1/gmx/app.js82 KB43 KB (53%)✓3rd
https://js.ui-portal.de/tamago/2.5.0/tamago.js?loglevel=error&view=automatic&tm=teal&stage=live&exclude=ppp&userEventLoad=partitialPageLoadDone68 KB35 KB (52%)✓3rd
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js0 KB23 KB (72%)✓3rd
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js33 KB23 KB (72%)✓3rd
https://dl.gmx.net/uim/live/config_homepage.js9 KB—✓3rd
https://img.ui-portal.de/pos-cdn/tracklib/4.7.3/tracklib.min.js10 KB—✓3rd
https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-vendors.bundle.js101 KB—✓3rd
https://dl.gmx.net/account-avatar/account-avatar.esm.js1 KB—✓3rd
https://s.uicdn.com/t/prod/iq/mam/purple/daq.js0 KB—✓3rd
https://dl.gmx.net/tcf/live/v1/js/tcf-api.js0 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

A
Page Weight Budget
1.0 MB transferred, 63 requests
PASS
1.0 MB transferred, 63 requests
Info::
Page weighs 3.9 MB (1.0 MB transferred)
Warning::
JavaScript is 522 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 522 KB
Info::
63 HTTP requests
Info::
Estimated 0.22 g CO2 per page load
1.0 MB / 2.4 MB budget
1.0 MB transferred
63 requests
0.22 g CO2 per page load
JavaScript 522.1 KiB 50%
CSS 161.6 KiB 15%
Other 99.0 KiB 9%
Fonts 90.1 KiB 9%
HTML 85.2 KiB 8%
Images 52.6 KiB 5%
Other 36.5 KiB 3%
Other 5.9 KiB 1%
Other 0 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+
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
182ms total JS execution
PASS
182ms total JS execution
Info::
Unattributable: 99ms CPU time
Info::
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.mi...: 83ms CPU time
Warning::
Third-party scripts: 182ms (100% of total)

Main Thread Breakdown

Script Evaluation 50% Other 32% Style & Layout 9% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
Unattributable99ms6ms0ms3rd
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js83ms57ms4ms3rd
A+
Font Loading
4 fonts (90 KB)
PASS
4 fonts (90 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

90 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 FCP 1.4 s LCP 1.7 sdata:application/font-woff2;charset=utf-8;base64,d09GMgABAAAAAD/gABIAAAAAkUgAAD92AAEAAAAAAAAAAAAAAA…gABIAAAAAkUgAAD92AAEAAA... data:application/font-woff2;charset=utf-8;base64,d09GMgABAAAAAD/gABIAAAAAkUgAAD92AAEAAAAAAAAAAAAAAA… — 16.0 KiB — 26 ms — font-display: swaphttps://img.ui-portal.de/ci/gmx/global/fonts/roboto/RobotoCondensed-Regular-webfont.woffRobotoCondensed-Regular... https://img.ui-portal.de/ci/gmx/global/fonts/roboto/RobotoCondensed-Regular-webfont.woff — 24.8 KiB — 5 ms — font-display: swaphttps://img.ui-portal.de/ci/gmx/global/fonts/roboto/Roboto-Medium-webfont.woffRoboto-Medium-webfont.woff https://img.ui-portal.de/ci/gmx/global/fonts/roboto/Roboto-Medium-webfont.woff — 24.6 KiB — 3 ms — font-display: swaphttps://img.ui-portal.de/ci/gmx/global/fonts/roboto/Roboto-Regular-webfont.woffRoboto-Regular-webfont.... https://img.ui-portal.de/ci/gmx/global/fonts/roboto/Roboto-Regular-webfont.woff — 24.6 KiB — 3 ms — font-display: swap
gABIAAAAAkUgAAD92AAEAAA... woff2 swap
Size 16 KB
Load time 26 ms
Start 599 ms
Risk FOUT — text flashes from fallback to web font
RobotoCondensed-Regular... woff swap
Size 25 KB
Load time 5 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Roboto-Medium-webfont.woff woff swap
Size 25 KB
Load time 3 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Roboto-Regular-webfont.... woff swap
Size 25 KB
Load time 3 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 ~22 KB and ~44 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Page Weight Inventory
63 resources · 1.0 MB · 125 KB savings available
PASS
63 resources · 1.0 MB · 125 KB savings available
Warning::
Page weight 29 KB over 1MB target
Got: 1.0 MB Expected: ≤ 1 MB
Info::
~125 KB of savings available
Warning::
62 third-party resources (100% of weight)
63 resources · 1.0 MiB · 62 third-party 29.0 KiB over 1MB target
JavaScript 50% · 522.1 KiB
CSS 15% · 161.6 KiB
Other 10% · 105.0 KiB
Font 9% · 90.1 KiB
Image 8% · 89.0 KiB
Document 8% · 85.3 KiB

~124.9 KiB of savings available

Remove unused JavaScript: 124.9 KiB
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: IONOS SE

Network Waterfall
63 requests over 1583ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.4 s LCP 1.7 shttps://gmx.net// https://gmx.net/ — 301 — 129 B — 106 ms — h2https://www.gmx.net/www.gmx.net/ https://www.gmx.net/ — 200 — 61.7 KiB — 400 ms — h2https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-common.cssjs.ui-portal.de/homepage/res/live/2... https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-common.css — 200 — 81.0 KiB — 29 ms — h2https://dl.gmx.net/account-avatar/account-avatar.esm.jsdl.gmx.net/account-avatar/account-a... https://dl.gmx.net/account-avatar/account-avatar.esm.js — 200 — 1.4 KiB — 25 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/daq.jss.uicdn.com/t/prod/iq/mam/purple/da... https://s.uicdn.com/t/prod/iq/mam/purple/daq.js — 200 — 16.9 KiB — 34 ms — h2https://dl.gmx.net/tcf/live/v1/js/tcf-api.jsdl.gmx.net/tcf/live/v1/js/tcf-api.j... https://dl.gmx.net/tcf/live/v1/js/tcf-api.js — 200 — 18.7 KiB — 17 ms — h2https://img.ui-portal.de/pos-cdn/tracklib/4.7.3/tracklib.min.jsimg.ui-portal.de/pos-cdn/tracklib/4... https://img.ui-portal.de/pos-cdn/tracklib/4.7.3/tracklib.min.js — 200 — 9.7 KiB — 28 ms — h2https://dl.gmx.net/uim/connector/live/v2/service.min.jsdl.gmx.net/uim/connector/live/v2/se... https://dl.gmx.net/uim/connector/live/v2/service.min.js — 200 — 41.8 KiB — 24 ms — h2https://js.ui-portal.de/homepage/res/live/2.16/gmx/page.bundle.jsjs.ui-portal.de/homepage/res/live/2... https://js.ui-portal.de/homepage/res/live/2.16/gmx/page.bundle.js — 200 — 59.4 KiB — 28 ms — h2https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-vendors.bundle.jsjs.ui-portal.de/homepage/res/live/2... https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-vendors.bundle.js — 200 — 101.0 KiB — 29 ms — h2https://www.gmx.net/consent-management/www.gmx.net/consent-management/ https://www.gmx.net/consent-management/ — 200 — 1.9 KiB — 57 ms — h2https://dl.gmx.net/uim/live/config_homepage.jsdl.gmx.net/uim/live/config_homepage... https://dl.gmx.net/uim/live/config_homepage.js — 200 — 8.9 KiB — 3 ms — h2https://js.ui-portal.de/consent-portal/2.0.0/consent.cssjs.ui-portal.de/consent-portal/2.0.... https://js.ui-portal.de/consent-portal/2.0.0/consent.css — 200 — 74.9 KiB — 12 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/daq.jss.uicdn.com/t/prod/iq/mam/purple/da... https://s.uicdn.com/t/prod/iq/mam/purple/daq.js — 200 — 0 B — 11 ms — h2https://dl.gmx.net/tcf/live/v1/js/tcf-api.jsdl.gmx.net/tcf/live/v1/js/tcf-api.j... https://dl.gmx.net/tcf/live/v1/js/tcf-api.js — 200 — 0 B — 11 ms — h2https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client.jsdl.gmx.net/permission/live/portal/v... https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client.js — 200 — 11.8 KiB — 8 ms — h2https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client-compat.jsdl.gmx.net/permission/live/portal/v... https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client-compat.js — 200 — 1.7 KiB — 6 ms — h2https://js.ui-portal.de/consent-portal/2.0.0/consent.jsjs.ui-portal.de/consent-portal/2.0.... https://js.ui-portal.de/consent-portal/2.0.0/consent.js — 200 — 1.6 KiB — 5 ms — h2https://img.ui-portal.de/homepage/tcf/gmx/spinner.gifimg.ui-portal.de/homepage/tcf/gmx/s... https://img.ui-portal.de/homepage/tcf/gmx/spinner.gif — 200 — 3.3 KiB — 8 ms — h2https://js.ui-portal.de/tamago/2.5.0/tamago.js?loglevel=error&view=automatic&tm=teal&stage=live&exclude=ppp&userEventLoad=partitialPageLoadDonejs.ui-portal.de/tamago/2.5.0/tamago... https://js.ui-portal.de/tamago/2.5.0/tamago.js?loglevel=error&view=automatic&tm=teal&stage=live&exclude=ppp&userEventLoad=partitialPageLoadDone — 200 — 68.0 KiB — 4 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/utag.81.js?utv=ut4.54.202603251028s.uicdn.com/t/prod/iq/mam/purple/ut... https://s.uicdn.com/t/prod/iq/mam/purple/utag.81.js?utv=ut4.54.202603251028 — 200 — 2.7 KiB — 8 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/utag.80.js?utv=ut4.54.202603251028s.uicdn.com/t/prod/iq/mam/purple/ut... https://s.uicdn.com/t/prod/iq/mam/purple/utag.80.js?utv=ut4.54.202603251028 — 200 — 2.5 KiB — 3 ms — h2data:application/font-woff2;charset=utf-8;base64,d09GMgABAAAAAD/gABIAAAAAkUgAAD92AAEAAAAAAAAAAAAAAA…data:application/font-woff2;charset... data:application/font-woff2;charset=utf-8;base64,d09GMgABAAAAAD/gABIAAAAAkUgAAD92AAEAAAAAAAAAAAAAAA… — 200 — 16.0 KiB — 26 ms — datahttps://i0.gmx.net/image/474/41652474,pd=4,h=1820,w=1108/homepage.webpi0.gmx.net/image/474/41652474,pd=4,... https://i0.gmx.net/image/474/41652474,pd=4,h=1820,w=1108/homepage.webp — 200 — 45.3 KiB — 4 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/utag.v.js?a=mam/purple/202603251028&cb=1776894803862s.uicdn.com/t/prod/iq/mam/purple/ut... https://s.uicdn.com/t/prod/iq/mam/purple/utag.v.js?a=mam/purple/202603251028&cb=1776894803862 — 200 — 150 B — 6 ms — h2https://tgw.gmx.net/eventstgw.gmx.net/events https://tgw.gmx.net/events — 200 — 0 B — 125 ms — h2https://dl.gmx.net/permission/live/portal/v1/ppp/core.htmldl.gmx.net/permission/live/portal/v... https://dl.gmx.net/permission/live/portal/v1/ppp/core.html — 200 — 644 B — 3 ms — h2https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.jss.uicdn.com/fd/sentry/v7/bundle.tra... https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js — 200 — 32.6 KiB — 9 ms — h2https://s.uicdn.com/tcf/live/v1/js/tcf-stub.jss.uicdn.com/tcf/live/v1/js/tcf-stub... https://s.uicdn.com/tcf/live/v1/js/tcf-stub.js — 200 — 1.4 KiB — 6 ms — h2https://img.ui-portal.de/pos-cdn/tracklib/4.3.0/tracklib.min.jsimg.ui-portal.de/pos-cdn/tracklib/4... https://img.ui-portal.de/pos-cdn/tracklib/4.3.0/tracklib.min.js — 200 — 9.9 KiB — 8 ms — h2
0 ms 500 ms 1.0 s 1.5 s FCP 1.4 s LCP 1.7 shttps://gmx.net// https://gmx.net/ — 301 — 129 B — 106 ms — h2https://www.gmx.net/www.gmx.net/ https://www.gmx.net/ — 200 — 61.7 KiB — 400 ms — h2https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-common.cssjs.ui-portal.de/homepage/res/live/2... https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-common.css — 200 — 81.0 KiB — 29 ms — h2https://dl.gmx.net/account-avatar/account-avatar.esm.jsdl.gmx.net/account-avatar/account-a... https://dl.gmx.net/account-avatar/account-avatar.esm.js — 200 — 1.4 KiB — 25 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/daq.jss.uicdn.com/t/prod/iq/mam/purple/da... https://s.uicdn.com/t/prod/iq/mam/purple/daq.js — 200 — 16.9 KiB — 34 ms — h2https://dl.gmx.net/tcf/live/v1/js/tcf-api.jsdl.gmx.net/tcf/live/v1/js/tcf-api.j... https://dl.gmx.net/tcf/live/v1/js/tcf-api.js — 200 — 18.7 KiB — 17 ms — h2https://img.ui-portal.de/pos-cdn/tracklib/4.7.3/tracklib.min.jsimg.ui-portal.de/pos-cdn/tracklib/4... https://img.ui-portal.de/pos-cdn/tracklib/4.7.3/tracklib.min.js — 200 — 9.7 KiB — 28 ms — h2https://dl.gmx.net/uim/connector/live/v2/service.min.jsdl.gmx.net/uim/connector/live/v2/se... https://dl.gmx.net/uim/connector/live/v2/service.min.js — 200 — 41.8 KiB — 24 ms — h2https://js.ui-portal.de/homepage/res/live/2.16/gmx/page.bundle.jsjs.ui-portal.de/homepage/res/live/2... https://js.ui-portal.de/homepage/res/live/2.16/gmx/page.bundle.js — 200 — 59.4 KiB — 28 ms — h2https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-vendors.bundle.jsjs.ui-portal.de/homepage/res/live/2... https://js.ui-portal.de/homepage/res/live/2.16/gmx/chunk-vendors.bundle.js — 200 — 101.0 KiB — 29 ms — h2https://www.gmx.net/consent-management/www.gmx.net/consent-management/ https://www.gmx.net/consent-management/ — 200 — 1.9 KiB — 57 ms — h2https://dl.gmx.net/uim/live/config_homepage.jsdl.gmx.net/uim/live/config_homepage... https://dl.gmx.net/uim/live/config_homepage.js — 200 — 8.9 KiB — 3 ms — h2https://js.ui-portal.de/consent-portal/2.0.0/consent.cssjs.ui-portal.de/consent-portal/2.0.... https://js.ui-portal.de/consent-portal/2.0.0/consent.css — 200 — 74.9 KiB — 12 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/daq.jss.uicdn.com/t/prod/iq/mam/purple/da... https://s.uicdn.com/t/prod/iq/mam/purple/daq.js — 200 — 0 B — 11 ms — h2https://dl.gmx.net/tcf/live/v1/js/tcf-api.jsdl.gmx.net/tcf/live/v1/js/tcf-api.j... https://dl.gmx.net/tcf/live/v1/js/tcf-api.js — 200 — 0 B — 11 ms — h2https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client.jsdl.gmx.net/permission/live/portal/v... https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client.js — 200 — 11.8 KiB — 8 ms — h2https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client-compat.jsdl.gmx.net/permission/live/portal/v... https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-client-compat.js — 200 — 1.7 KiB — 6 ms — h2https://js.ui-portal.de/consent-portal/2.0.0/consent.jsjs.ui-portal.de/consent-portal/2.0.... https://js.ui-portal.de/consent-portal/2.0.0/consent.js — 200 — 1.6 KiB — 5 ms — h2https://img.ui-portal.de/homepage/tcf/gmx/spinner.gifimg.ui-portal.de/homepage/tcf/gmx/s... https://img.ui-portal.de/homepage/tcf/gmx/spinner.gif — 200 — 3.3 KiB — 8 ms — h2https://js.ui-portal.de/tamago/2.5.0/tamago.js?loglevel=error&view=automatic&tm=teal&stage=live&exclude=ppp&userEventLoad=partitialPageLoadDonejs.ui-portal.de/tamago/2.5.0/tamago... https://js.ui-portal.de/tamago/2.5.0/tamago.js?loglevel=error&view=automatic&tm=teal&stage=live&exclude=ppp&userEventLoad=partitialPageLoadDone — 200 — 68.0 KiB — 4 ms — h2https://s.uicdn.com/t/prod/iq/mam/purple/utag.81.js?utv=ut4.54.202603251028s.uicdn.com/t/prod/iq/mam/purple/ut... https://s.uicdn.com/t/prod/iq/mam/purple/utag.81.js?utv=ut4.54.202603251028 — 200 — 2.7 KiB — 8 ms — 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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
100% of JavaScript execution is third-party
First-party Third-party 182ms · 0KB · €2/mo
Unattributable
Other
Optional
Execution 99ms
Transfer 0 KB
Monthly Cost €1/mo
s.uicdn.com
Other
Optional
Execution 83ms
Transfer 0 KB
Unused 72%
Monthly Cost €1/mo

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

72% of s.uicdn.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

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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