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https://gmx.net

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
81
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.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
58
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.

3.32 s

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

3.81 s

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

56 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.

4.06 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.

8.62 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
10 PASS 3 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 (695.5 KiB of 695.6 KiB)
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
6 images, 0 KB saveable
REVIEW
6 images, 0 KB saveable
Info::
All images are well-optimized
6 images 78 KB
0 oversized -0 KB
6 legacy format
0 missing dimensions CLS risk
B
JS Execution Cost
944ms total JS execution
REVIEW
944ms total JS execution
Warning::
Unattributable: 378ms CPU time
Warning::
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.mi...: 309ms CPU time
Info::
https://dl.gmx.net/tcf/live/v1/js/tcf-api.js: 100ms CPU time
Info::
https://s.uicdn.com/t/prod/iq/mam/beige/daq.js: 94ms CPU time
Info::
https://plus.gmx.net/lt?wpt=x&nw=42&accmod=1&lt=po...: 63ms CPU time
Warning::
Third-party scripts: 944ms (100% of total)

Main Thread Breakdown

Script Evaluation 52% Other 34% Style & Layout 5% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
Unattributable378ms28ms0ms3rd
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js309ms215ms18ms3rd
https://dl.gmx.net/tcf/live/v1/js/tcf-api.js100ms76ms12ms3rd
https://s.uicdn.com/t/prod/iq/mam/beige/daq.js94ms86ms7ms3rd
https://plus.gmx.net/lt?wpt=x&nw=42&accmod=1&lt=portal%28gmx%29category%28magazine%29section%28landingpage%29tagid%28permission%29layoutclass%28b%29&ref=https%253A%252F%252Fwww.gmx.net&prf%5Bportal%5D=gmx&prf%5Bstage%5D=live&prf%5Bcategory%5D=magazine&prf%5Bsection%5D=landingpage&prf%5Btagid%5D=permission&prf%5Blayoutclass%5D=b&prf%5Bversion%5D=1.102.0&external_uid=null&uid_stable=0&prf%5Bexternal_uid%5D=&prf%5Bpermission_layer%5D=tcf_v2&prf%5Bhist_items_count%5D=0&wi=63591436763ms44ms3ms3rd
B
JS Bundles
22 scripts, 90 KB unused
REVIEW
22 scripts, 90 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://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: 90 KB
90 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://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js33 KB23 KB (72%)✓3rd
https://s.uicdn.com/fd/sentry/v7/bundle.tracing.min.js0 KB23 KB (72%)✓3rd
https://s.uicdn.com/uimag/7.10655.0/assets/consent/main.js3 KB—✓3rd
https://s.uicdn.com/uimag/7.10655.0/assets/consent/sentry.bundle.min.js20 KB—✓3rd
https://dl.gmx.net/tcf/live/v1/js/tcf-api.js19 KB—✓3rd
https://s.uicdn.com/uimag/7.10655.0/assets/consent/webvitals.js2 KB—✓3rd
https://s.uicdn.com/uimag/7.10655.0/assets/consent/web.vitals.bundle.min.js2 KB—✓3rd
https://s.uicdn.com/uimag/7.10655.0/assets/consent/shared-functions.js2 KB—✓3rd
https://s.uicdn.com/tcf/live/v1/js/tcf-stub.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

A+
Page Weight Budget
696 KB transferred, 57 requests
PASS
696 KB transferred, 57 requests
Info::
Page weighs 2.7 MB (696 KB transferred)
Info::
57 HTTP requests
Info::
Estimated 0.14 g CO2 per page load
696 KB / 2.4 MB budget
696 KB transferred
57 requests
0.14 g CO2 per page load
JavaScript 235.2 KiB 34%
Fonts 139.0 KiB 20%
HTML 116.6 KiB 17%
Other 99.0 KiB 14%
Images 78.3 KiB 11%
Other 15.0 KiB 2%
CSS 6.6 KiB 1%
Other 5.9 KiB 1%
Other 0 B 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
7 fonts (139 KB)
PASS
7 fonts (139 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

139 KB total

Render-blocking

0

of 7

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 FCP 3.3 s LCP 3.8 shttps://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-BoldItalic.woff2Roboto-BoldItalic.woff2 https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-BoldItalic.woff2 — 16.8 KiB — 73 ms — font-display: swaphttps://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Bold.woff2Roboto-Bold.woff2 https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Bold.woff2 — 15.6 KiB — 76 ms — font-display: swaphttps://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Italic.woff2Roboto-Italic.woff2 https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Italic.woff2 — 17.1 KiB — 78 ms — font-display: swaphttps://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Regular.woff2Roboto-Regular.woff2 https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Regular.woff2 — 15.5 KiB — 75 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 — 3 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 — 6 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
Roboto-BoldItalic.woff2 woff2 swap
Size 17 KB
Load time 73 ms
Start 249 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Bold.woff2 woff2 swap
Size 16 KB
Load time 76 ms
Start 250 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Italic.woff2 woff2 swap
Size 17 KB
Load time 78 ms
Start 250 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Regular.woff2 woff2 swap
Size 15 KB
Load time 75 ms
Start 250 ms
Risk FOUT — text flashes from fallback to web font
RobotoCondensed-Regular... woff swap
Size 25 KB
Load time 3 ms
Start 1.7 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 6 ms
Start 1.7 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 1.7 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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
—
preload
1
dns-prefetch
—
prefetch
—

1 resource hints configured

A
Page Weight Inventory
57 resources · 696 KB · 90 KB savings available
PASS
57 resources · 696 KB · 90 KB savings available
Info::
Within 1MB page-weight target
Got: 696 KB
Info::
~90 KB of savings available
Warning::
56 third-party resources (100% of weight)
57 resources · 695.6 KiB · 56 third-party Within 1MB page-weight target
JavaScript 34% · 235.2 KiB
Font 20% · 139.0 KiB
Document 17% · 116.7 KiB
Other 15% · 104.9 KiB
Image 13% · 93.2 KiB
CSS 1% · 6.6 KiB

~89.9 KiB of savings available

Remove unused JavaScript: 89.9 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+
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
57 requests over 1964ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 3.3 s LCP 3.8 shttps://gmx.net// https://gmx.net/ — 301 — 129 B — 113 ms — h2https://www.gmx.net/www.gmx.net/ https://www.gmx.net/ — 200 — 94.0 KiB — 231 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-BoldItalic.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-BoldItalic.woff2 — 200 — 16.8 KiB — 73 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Bold.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Bold.woff2 — 200 — 15.6 KiB — 76 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Italic.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Italic.woff2 — 200 — 17.1 KiB — 78 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Regular.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Regular.woff2 — 200 — 15.5 KiB — 75 ms — h2https://www.gmx.net/magazine/consent-management/www.gmx.net/magazine/consent-manage... https://www.gmx.net/magazine/consent-management/ — 200 — 943 B — 88 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/gmx/styles.csss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/gmx/styles.css — 200 — 952 B — 18 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 — 82 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 — 80 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/gmx/spinner.gifs.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/gmx/spinner.gif — 200 — 3.3 KiB — 10 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/sentry.bundle.min.jss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/sentry.bundle.min.js — 200 — 19.6 KiB — 8 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/shared-functions.jss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/shared-functions.js — 200 — 1.6 KiB — 7 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/consent-management.jss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/consent-management.js — 200 — 924 B — 7 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/main.jss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/main.js — 200 — 2.7 KiB — 4 ms — h2https://www.gmx.net/magazine/consent-management/event/visit?visits=0www.gmx.net/magazine/consent-manage... https://www.gmx.net/magazine/consent-management/event/visit?visits=0 — 202 — 39 B — 45 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/webvitals.jss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/webvitals.js — 200 — 2.0 KiB — 3 ms — h2https://s.uicdn.com/uimag/1/assets/logo/logo-gmx.svgs.uicdn.com/uimag/1/assets/logo/log... https://s.uicdn.com/uimag/1/assets/logo/logo-gmx.svg — 200 — 772 B — 38 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/gmx/GMX_content_smartphone.jpgs.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/gmx/GMX_content_smartphone.jpg — 200 — 70.2 KiB — 5 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/consent/web.vitals.bundle.min.jss.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/consent/web.vitals.bundle.min.js — 200 — 2.0 KiB — 4 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 — 643 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 — 13 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 — 9 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 — 10 ms — h2https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-core.min.jsdl.gmx.net/permission/live/portal/v... https://dl.gmx.net/permission/live/portal/v1/ppp/js/permission-core.min.js — 200 — 15.8 KiB — 6 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/favicon/gmx/favicon.icos.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/favicon/gmx/favicon.ico — 200 — 14.9 KiB — 3 ms — h2https://plus.gmx.net/lt?wpt=x&nw=42&accmod=1&lt=portal%28gmx%29category%28magazine%29section%28landingpage%29tagid%28permission%29layoutclass%28b%29&ref=https%253A%252F%252Fwww.gmx.net&prf%5Bportal%5D=gmx&prf%5Bstage%5D=live&prf%5Bcategory%5D=magazine&prf%5Bsection%5D=landingpage&prf%5Btagid%5D=permission&prf%5Blayoutclass%5D=b&prf%5Bversion%5D=1.102.0&external_uid=null&uid_stable=0&prf%5Bexternal_uid%5D=&prf%5Bpermission_layer%5D=tcf_v2&prf%5Bhist_items_count%5D=0&wi=635914367plus.gmx.net/lt?wpt=x&nw=42&accmod=... https://plus.gmx.net/lt?wpt=x&nw=42&accmod=1&lt=portal%28gmx%29category%28magazine%29section%28landingpage%29tagid%28permission%29layoutclass%28b%29&ref=https%253A%252F%252Fwww.gmx.net&prf%5Bportal%5D=gmx&prf%5Bstage%5D=live&prf%5Bcategory%5D=magazine&prf%5Bsection%5D=landingpage&prf%5Btagid%5D=permission&prf%5Blayoutclass%5D=b&prf%5Bversion%5D=1.102.0&external_uid=null&uid_stable=0&prf%5Bexternal_uid%5D=&prf%5Bpermission_layer%5D=tcf_v2&prf%5Bhist_items_count%5D=0&wi=635914367 — 200 — 20.2 KiB — 280 ms — http/1.1https://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 — 0 B — 2 ms — h2https://dl.gmx.net/uim/permission/_auth/authlib.jsdl.gmx.net/uim/permission/_auth/aut... https://dl.gmx.net/uim/permission/_auth/authlib.js — 200 — 6.2 KiB — 17 ms — h2https://s.uicdn.com/permission/live/v1/ppp/js/permission-layer.min.jss.uicdn.com/permission/live/v1/ppp/... https://s.uicdn.com/permission/live/v1/ppp/js/permission-layer.min.js — 200 — 4.6 KiB — 3 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 3.3 s LCP 3.8 shttps://gmx.net// https://gmx.net/ — 301 — 129 B — 113 ms — h2https://www.gmx.net/www.gmx.net/ https://www.gmx.net/ — 200 — 94.0 KiB — 231 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-BoldItalic.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-BoldItalic.woff2 — 200 — 16.8 KiB — 73 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Bold.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Bold.woff2 — 200 — 15.6 KiB — 76 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Italic.woff2s.uicdn.com/uimag/7.10655.0/assets/... https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Italic.woff2 — 200 — 17.1 KiB — 78 ms — h2https://s.uicdn.com/uimag/7.10655.0/assets/webfonts/Roboto/Roboto-Regular.woff2s.uicdn.com/uimag/7.10655.0/assets/... 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https://plus.gmx.net/lt?wpt=x&nw=42&accmod=1&lt=portal%28gmx%29category%28magazine%29section%28landingpage%29tagid%28permission%29layoutclass%28b%29&ref=https%253A%252F%252Fwww.gmx.net&prf%5Bportal%5D=gmx&prf%5Bstage%5D=live&prf%5Bcategory%5D=magazine&prf%5Bsection%5D=landingpage&prf%5Btagid%5D=permission&prf%5Blayoutclass%5D=b&prf%5Bversion%5D=1.102.0&external_uid=null&uid_stable=0&prf%5Bexternal_uid%5D=&prf%5Bpermission_layer%5D=tcf_v2&prf%5Bhist_items_count%5D=0&wi=635914367 — 200 — 20.2 KiB — 280 ms — http/1.1https://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 — 0 B — 2 ms — h2https://dl.gmx.net/uim/permission/_auth/authlib.jsdl.gmx.net/uim/permission/_auth/aut... https://dl.gmx.net/uim/permission/_auth/authlib.js — 200 — 6.2 KiB — 17 ms — h2https://s.uicdn.com/permission/live/v1/ppp/js/permission-layer.min.jss.uicdn.com/permission/live/v1/ppp/... https://s.uicdn.com/permission/live/v1/ppp/js/permission-layer.min.js — 200 — 4.6 KiB — 3 ms — h2https://js.ui-portal.de/netid/cmp/release/v1/gmx/app.cssjs.ui-portal.de/netid/cmp/release/v... https://js.ui-portal.de/netid/cmp/release/v1/gmx/app.css — 200 — 5.7 KiB — 50 ms — h2https://js.ui-portal.de/netid/cmp/release/v1/gmx/app.jsjs.ui-portal.de/netid/cmp/release/v... https://js.ui-portal.de/netid/cmp/release/v1/gmx/app.js — 200 — 81.9 KiB — 53 ms — h2https://trace-proxy.mam.dev/advertisement/api/32/envelope/?sentry_key=ccc160289c5145a968bbffc7dd63af43&sentry_version=7&sentry_client=sentry.javascript.browser%2F7.103.0trace-proxy.mam.dev/advertisement/a... https://trace-proxy.mam.dev/advertisement/api/32/envelope/?sentry_key=ccc160289c5145a968bbffc7dd63af43&sentry_version=7&sentry_client=sentry.javascript.browser%2F7.103.0 — 200 — 236 B — 207 ms — h2https://js.ui-portal.de/netid/cmp/config/default/custom-purposes.jsonjs.ui-portal.de/netid/cmp/config/de... 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https://dl.gmx.net/tcf/live/v1/js/tcf-api.js — 200 — 0 B — 2 ms — h2https://s.uicdn.com/t/prod/iq/mam/beige/daq.jss.uicdn.com/t/prod/iq/mam/beige/daq... https://s.uicdn.com/t/prod/iq/mam/beige/daq.js — 200 — 16.7 KiB — 3 ms — h2https://s.uicdn.com/t/prod/iq/mam/beige/utag.22.js?utv=ut4.54.202603251024s.uicdn.com/t/prod/iq/mam/beige/uta... https://s.uicdn.com/t/prod/iq/mam/beige/utag.22.js?utv=ut4.54.202603251024 — 200 — 2.7 KiB — 3 ms — h2https://s.uicdn.com/t/prod/iq/mam/beige/utag.21.js?utv=ut4.54.202603251024s.uicdn.com/t/prod/iq/mam/beige/uta... https://s.uicdn.com/t/prod/iq/mam/beige/utag.21.js?utv=ut4.54.202603251024 — 200 — 2.5 KiB — 4 ms — h2https://s.uicdn.com/t/prod/iq/mam/beige/utag.v.js?a=mam/beige/202604140652&cb=1776894790295s.uicdn.com/t/prod/iq/mam/beige/uta... https://s.uicdn.com/t/prod/iq/mam/beige/utag.v.js?a=mam/beige/202604140652&cb=1776894790295 — 200 — 150 B — 2 ms — h2https://oauth2.gmx.net/tokenoauth2.gmx.net/token https://oauth2.gmx.net/token — 400 — 448 B — 120 ms — h2https://js.ui-portal.de/netid/cmp/config/gmx/config.json?p=79187878394js.ui-portal.de/netid/cmp/config/gm... https://js.ui-portal.de/netid/cmp/config/gmx/config.json?p=79187878394 — 200 — 950 B — 3 ms — h2https://permission-proxy.gmx.net/netid-user-status?q.tapp_id.eq=ef48100e-ab6f-41e8-9dbb-2c3c35b9c7f9&q.identifier.in=ETPID,TPIDpermission-proxy.gmx.net/netid-user... https://permission-proxy.gmx.net/netid-user-status?q.tapp_id.eq=ef48100e-ab6f-41e8-9dbb-2c3c35b9c7f9&q.identifier.in=ETPID,TPID — 400 — 441 B — 231 ms — h2https://einwilligungsspeicher.netid.de/netid-user-status?q.tapp_id.eq=ef48100e-ab6f-41e8-9dbb-2c3c35b9c7f9&q.identifier.in=TPID,ETPIDeinwilligungsspeicher.netid.de/neti... https://einwilligungsspeicher.netid.de/netid-user-status?q.tapp_id.eq=ef48100e-ab6f-41e8-9dbb-2c3c35b9c7f9&q.identifier.in=TPID,ETPID — 400 — 441 B — 204 ms — h2https://js.ui-portal.de/netid/consensu/v3/latest/vendor-list.jsonjs.ui-portal.de/netid/consensu/v3/l... https://js.ui-portal.de/netid/consensu/v3/latest/vendor-list.json — 200 — 89.1 KiB — 5 ms — h2https://js.ui-portal.de/netid/consensu/v3/latest/purposes-de.jsonjs.ui-portal.de/netid/consensu/v3/l... https://js.ui-portal.de/netid/consensu/v3/latest/purposes-de.json — 200 — 9.3 KiB — 3 ms — h2https://js.ui-portal.de/netid/cmp/assets/img/spinner.gifjs.ui-portal.de/netid/cmp/assets/im... https://js.ui-portal.de/netid/cmp/assets/img/spinner.gif — 200 — 3.3 KiB — 10 ms — h2https://img.ui-portal.de/cd/permissionlayer-prototype/brand/gmx.net/brand-logo.svgimg.ui-portal.de/cd/permissionlayer... https://img.ui-portal.de/cd/permissionlayer-prototype/brand/gmx.net/brand-logo.svg — 200 — 581 B — 3 ms — h2https://img.ui-portal.de/ci/gmx/global/fonts/roboto/RobotoCondensed-Regular-webfont.woffimg.ui-portal.de/ci/gmx/global/font... https://img.ui-portal.de/ci/gmx/global/fonts/roboto/RobotoCondensed-Regular-webfont.woff — 200 — 24.8 KiB — 3 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 944ms · 37KB · €10/mo
Unattributable
Other
Costly
Execution 378ms
Transfer 0 KB
Monthly Cost €4/mo
s.uicdn.com
Other
Costly
Execution 309ms
Transfer 0 KB
Unused 72%
Monthly Cost €3/mo
dl.gmx.net
Other
Optional
Execution 100ms
Transfer 0 KB
Monthly Cost €1/mo
s.uicdn.com
Other
Optional
Execution 94ms
Transfer 17 KB
Monthly Cost €1/mo
plus.gmx.net
Other
Optional
Execution 63ms
Transfer 20 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 378ms and costs ~€4/month
  • s.uicdn.com adds 309ms 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

Unattributable takes 378ms 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

s.uicdn.com takes 309ms 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

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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