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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
3
REVIEW
5
PASS
5
INFO
2

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

Mobile Desktop
91
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.
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.

1.00 s

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

1.61 s

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

31 ms

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

0.006

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.

1.76 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
5 PASS 5 REVIEW 3 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 (1.6 MiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
54 resources · 1.6 MB · 110 KB savings available
FIX
54 resources · 1.6 MB · 110 KB savings available
Warning::
Page weight 633 KB over 1MB target
Got: 1.6 MB Expected: ≤ 1 MB
Info::
~110 KB of savings available
Warning::
53 third-party resources (100% of weight)
Info::
1 resources over 200KB
54 resources · 1.6 MiB · 53 third-party 633.0 KiB over 1MB target
Image 36% · 591.5 KiB
Font 34% · 556.6 KiB
JavaScript 15% · 245.2 KiB
CSS 14% · 230.3 KiB
Document 2% · 32.4 KiB
Other 0% · 1.1 KiB

~110.4 KiB of savings available

Remove unused JavaScript: 110.4 KiB
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.

C
Page Weight Budget
Action
1.6 MB transferred, 54 requests
REVIEW
1.6 MB transferred, 54 requests
Info::
Page weighs 3.1 MB (1.6 MB transferred)
Info::
Fonts are 435 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 435 KB
Info::
CSS is 230 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 230 KB
Info::
54 HTTP requests
Info::
Estimated 0.34 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
54 requests
0.34 g CO2 per page load
Images 576.8 KiB 35%
Fonts 434.7 KiB 26%
JavaScript 245.2 KiB 15%
CSS 230.3 KiB 14%
Other 135.2 KiB 8%
HTML 32.3 KiB 2%
Other 1.8 KiB 0%
Other 776 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

C
Image Optimization
Action
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
https://www.telekom.com/resource/image/1104046/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1081512/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/639656/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1103346/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1102904/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1066812/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/417548/land... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1103908/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1103678/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1102938/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1096698/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.telekom.com/resource/image/1055158/lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 577 KB
0 oversized -0 KB
26 legacy format
12 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

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

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

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

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

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

B
JS Execution Cost
524ms total JS execution
REVIEW
524ms total JS execution
Info::
https://www.telekom.com/resource/themes/com/js/com...: 214ms CPU time
Info::
https://www.telekom.com/: 160ms CPU time
Info::
https://tags-eu.tiqcdn.com/utag/telekom/com/prod/u...: 89ms CPU time
Info::
Unattributable: 61ms CPU time
Warning::
Third-party scripts: 524ms (100% of total)

Main Thread Breakdown

Script Evaluation 31% Other 29% Style & Layout 27% Rendering 5% Parse HTML & CSS 5% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://www.telekom.com/resource/themes/com/js/com-1021766-18.js214ms124ms10ms3rd
https://www.telekom.com/160ms1ms0ms3rd
https://tags-eu.tiqcdn.com/utag/telekom/com/prod/utag.js89ms23ms5ms3rd
Unattributable61ms1ms0ms3rd
B
JS Bundles
7 scripts, 110 KB unused
REVIEW
7 scripts, 110 KB unused
Warning::
https://www.telekom.com/resource/themes/com/js/com...: 86 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tags-eu.tiqcdn.com/utag/telekom/com/prod/u...: 24 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 110 KB
110 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.telekom.com/resource/themes/com/js/com-1021766-18.js134 KB86 KB (65%)✓3rd
https://tags-eu.tiqcdn.com/utag/telekom/com/prod/utag.js61 KB24 KB (40%)✓3rd
https://f1-eu.readspeaker.com/script/4779/ReadSpeaker.js?pids=embhl&jit=14 KB—✓3rd
https://www.telekom.com/resource/themes/com/js/chunkPathById-1021764-40.js2 KB—✓3rd
https://www.telekom.com/resource/themes/com/js/commons-1021768-12.js37 KB—✓3rd
https://tags-eu.tiqcdn.com/utag/telekom/com/prod/utag.15.js?utv=ut4.52.2026032309438 KB—✓3rd
https://tags-eu.tiqcdn.com/utag/telekom/com/prod/utag.v.js?a=telekom/com/202603300956&cb=17769012065230 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

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
11 fonts (557 KB)
PASS
11 fonts (557 KB)
Info::
11 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

11

557 KB total

Render-blocking

0

of 11

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 1.0 s LCP 1.6 shttps://www.telekom.com/resource/crblob/1021682/ad396e353ff1ea0eccc2c156e663238e/teleneo-thin-woff-data.woffteleneo-thin-woff-data.... https://www.telekom.com/resource/crblob/1021682/ad396e353ff1ea0eccc2c156e663238e/teleneo-thin-woff-data.woff — 54.6 KiB — 71 ms — font-display: swaphttps://www.telekom.com/resource/crblob/1021674/cef4875f104fc282b3b458b2dcb80be9/teleneo-medium-woff-data.woffteleneo-medium-woff-dat... https://www.telekom.com/resource/crblob/1021674/cef4875f104fc282b3b458b2dcb80be9/teleneo-medium-woff-data.woff — 58.8 KiB — 340 ms — font-display: swaphttps://www.telekom.com/resource/crblob/1021666/4700ef9398ecb245df8891cadae919ab/teleneo-bold-woff-data.woffteleneo-bold-woff-data.... https://www.telekom.com/resource/crblob/1021666/4700ef9398ecb245df8891cadae919ab/teleneo-bold-woff-data.woff — 58.9 KiB — 404 ms — font-display: swaphttps://www.telekom.com/resource/crblob/1021670/9479a1f7ee32d142c54bb28c800b21f5/teleneo-extrabold-woff-data.woffteleneo-extrabold-woff-... https://www.telekom.com/resource/crblob/1021670/9479a1f7ee32d142c54bb28c800b21f5/teleneo-extrabold-woff-data.woff — 58.4 KiB — 404 ms — font-display: swaphttps://www.telekom.com/resource/crblob/1021680/2fc1bb68d9930f87ea79e48f87238a60/teleneo-regularitalic-woff-data.woffteleneo-regularitalic-w... https://www.telekom.com/resource/crblob/1021680/2fc1bb68d9930f87ea79e48f87238a60/teleneo-regularitalic-woff-data.woff — 60.7 KiB — 188 ms — font-display: swaphttps://www.telekom.com/resource/crblob/1021676/b467d6cdb9e76abd49532ecebfbe940b/teleneo-mediumitalic-woff-data.woffteleneo-mediumitalic-wo... https://www.telekom.com/resource/crblob/1021676/b467d6cdb9e76abd49532ecebfbe940b/teleneo-mediumitalic-woff-data.woff — 61.2 KiB — 187 ms — font-display: swapdata:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAFdwAAsAAAAAVyQAAQAAAAAAAAAAAAAAAAAAA…x-font-woff;charset=utf... data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAFdwAAsAAAAAVyQAAQAAAAAAAAAAAAAAAAAAA… — 21.9 KiB — 41 ms — font-display: swapdata:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAOYMABIAAAAB55gAAAAAAAAAAAAAAAAAAAAAA…x-font-woff;charset=utf... data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAOYMABIAAAAB55gAAAAAAAAAAAAAAAAAAAAAA… — 57.5 KiB — 41 ms — font-display: swapdata:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAE/cAAsAAAAAT5AAAQAAAAAAAAAAAAAAAAAAA…cAAsAAAAAT5AAAQAAAAAAAA... data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAE/cAAsAAAAAT5AAAQAAAAAAAAAAAAAAAAAAA… — 20.0 KiB — 114 ms — font-display: swaphttps://ebs10.telekom.de/opt-in/font/teleneo/teleneo-bold.woff2teleneo-bold.woff2 https://ebs10.telekom.de/opt-in/font/teleneo/teleneo-bold.woff2 — 52.5 KiB — 232 ms — font-display: swaphttps://ebs10.telekom.de/opt-in/font/teleneo/teleneo-regular.woff2teleneo-regular.woff2 https://ebs10.telekom.de/opt-in/font/teleneo/teleneo-regular.woff2 — 52.1 KiB — 230 ms — font-display: swap
teleneo-thin-woff-data.... woff swap
Size 55 KB
Load time 71 ms
Start 395 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
teleneo-medium-woff-dat... woff swap
Size 59 KB
Load time 340 ms
Start 396 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
teleneo-bold-woff-data.... woff swap
Size 59 KB
Load time 404 ms
Start 396 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
teleneo-extrabold-woff-... woff swap
Size 58 KB
Load time 404 ms
Start 396 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
teleneo-regularitalic-w... woff swap
Size 61 KB
Load time 188 ms
Start 854 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
teleneo-mediumitalic-wo... woff swap
Size 61 KB
Load time 187 ms
Start 855 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;charset=utf... woff swap
Size 22 KB
Load time 41 ms
Start 879 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;charset=utf... woff swap
Size 58 KB
Load time 41 ms
Start 880 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
cAAsAAAAAT5AAAQAAAAAAAA... woff swap
Size 20 KB
Load time 114 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
teleneo-bold.woff2 woff2 swap
Size 53 KB
Load time 232 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
teleneo-regular.woff2 woff2 swap
Size 52 KB
Load time 230 ms
Start 1.3 s
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)

Fixing the unchecked items could save ~136 KB and ~272 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
Network Waterfall
54 requests over 2280ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.0 s LCP 1.6 shttps://telekom.com// https://telekom.com/ — 301 — 85 B — 107 ms — h2https://www.telekom.com/www.telekom.com/ https://www.telekom.com/ — 200 — 32.3 KiB — 276 ms — h2https://www.telekom.com/resource/crblob/1021682/ad396e353ff1ea0eccc2c156e663238e/teleneo-thin-woff-data.woffwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021682/ad396e353ff1ea0eccc2c156e663238e/teleneo-thin-woff-data.woff — 200 — 54.6 KiB — 71 ms — h2https://www.telekom.com/resource/crblob/1021674/cef4875f104fc282b3b458b2dcb80be9/teleneo-medium-woff-data.woffwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021674/cef4875f104fc282b3b458b2dcb80be9/teleneo-medium-woff-data.woff — 200 — 58.8 KiB — 340 ms — h2https://www.telekom.com/resource/crblob/1021666/4700ef9398ecb245df8891cadae919ab/teleneo-bold-woff-data.woffwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021666/4700ef9398ecb245df8891cadae919ab/teleneo-bold-woff-data.woff — 200 — 58.9 KiB — 404 ms — h2https://www.telekom.com/resource/crblob/1021670/9479a1f7ee32d142c54bb28c800b21f5/teleneo-extrabold-woff-data.woffwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021670/9479a1f7ee32d142c54bb28c800b21f5/teleneo-extrabold-woff-data.woff — 200 — 58.4 KiB — 404 ms — h2https://www.telekom.com/resource/themes/com/css/com-1021854-20.csswww.telekom.com/resource/themes/com... https://www.telekom.com/resource/themes/com/css/com-1021854-20.css — 200 — 229.3 KiB — 440 ms — h2https://f1-eu.readspeaker.com/script/4779/ReadSpeaker.js?pids=embhl&jit=1f1-eu.readspeaker.com/script/4779/R... https://f1-eu.readspeaker.com/script/4779/ReadSpeaker.js?pids=embhl&jit=1 — 200 — 4.1 KiB — 98 ms — h2https://tags-eu.tiqcdn.com/utag/telekom/com/prod/utag.jstags-eu.tiqcdn.com/utag/telekom/com... https://tags-eu.tiqcdn.com/utag/telekom/com/prod/utag.js — 200 — 61.0 KiB — 10 ms — h2https://www.telekom.com/resource/themes/com/js/chunkPathById-1021764-40.jswww.telekom.com/resource/themes/com... https://www.telekom.com/resource/themes/com/js/chunkPathById-1021764-40.js — 200 — 1.5 KiB — 38 ms — h2https://www.telekom.com/resource/themes/com/js/commons-1021768-12.jswww.telekom.com/resource/themes/com... https://www.telekom.com/resource/themes/com/js/commons-1021768-12.js — 200 — 36.7 KiB — 40 ms — h2https://www.telekom.com/resource/themes/com/js/com-1021766-18.jswww.telekom.com/resource/themes/com... https://www.telekom.com/resource/themes/com/js/com-1021766-18.js — 200 — 133.9 KiB — 189 ms — h2https://www.telekom.com/resource/crblob/1021680/2fc1bb68d9930f87ea79e48f87238a60/teleneo-regularitalic-woff-data.woffwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021680/2fc1bb68d9930f87ea79e48f87238a60/teleneo-regularitalic-woff-data.woff — 200 — 60.7 KiB — 188 ms — h2https://www.telekom.com/resource/crblob/1021676/b467d6cdb9e76abd49532ecebfbe940b/teleneo-mediumitalic-woff-data.woffwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021676/b467d6cdb9e76abd49532ecebfbe940b/teleneo-mediumitalic-woff-data.woff — 200 — 61.2 KiB — 187 ms — h2https://f1-eu.readspeaker.com/script/4779/ReadSpeaker.Styles-Button.css?v=2.5.16.6672f1-eu.readspeaker.com/script/4779/R... https://f1-eu.readspeaker.com/script/4779/ReadSpeaker.Styles-Button.css?v=2.5.16.6672 — 200 — 943 B — 18 ms — h2data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAFdwAAsAAAAAVyQAAQAAAAAAAAAAAAAAAAAAA…data:application/x-font-woff;charse... data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAFdwAAsAAAAAVyQAAQAAAAAAAAAAAAAAAAAAA… — 200 — 21.9 KiB — 41 ms — datadata:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAOYMABIAAAAB55gAAAAAAAAAAAAAAAAAAAAAA…data:application/x-font-woff;charse... data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAOYMABIAAAAB55gAAAAAAAAAAAAAAAAAAAAAA… — 200 — 57.5 KiB — 41 ms — datadata:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAE/cAAsAAAAAT5AAAQAAAAAAAAAAAAAAAAAAA…data:application/x-font-woff;charse... data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAE/cAAsAAAAAT5AAAQAAAAAAAAAAAAAAAAAAA… — 200 — 20.0 KiB — 114 ms — datadata:image/gif;base64,R0lGODlheAB4AKIHAOPj466urtPT09zc3L6+vurq6srKygAAACH/C05FVFNDQVBFMi4wAwEAAAAh/…data:image/gif;base64,R0lGODlheAB4A... data:image/gif;base64,R0lGODlheAB4AKIHAOPj466urtPT09zc3L6+vurq6srKygAAACH/C05FVFNDQVBFMi4wAwEAAAAh/… — 200 — 0 B — 0 ms — datahttps://www.telekom.com/resource/image/1103796/landscape_ratio16x9/768/432/d79a7ef9fe42ca8ab0b2cf0ae529ebdf/BA3475395D14DC4BE24E03160141DE04/bi-20260401-dtag-hauptversammlung-02-en.jpgwww.telekom.com/resource/image/1103... 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https://www.telekom.com/resource/image/1102938/landscape_ratio4x3/320/240/abe55aff7f3df9c587dc1079cda96e8a/3FB6B33340F6C35AC7E372C84D73CAE7/bi-260303-agenten-sicherheit-en.jpg — 200 — 16.3 KiB — 56 ms — h2https://www.telekom.com/resource/image/1102904/landscape_ratio4x3/320/240/3454086fa6c6342941766030a295a76f/591387E803F98FD12B7776A7270F0A64/bi-260302-mwc-overall-en.jpgwww.telekom.com/resource/image/1102... https://www.telekom.com/resource/image/1102904/landscape_ratio4x3/320/240/3454086fa6c6342941766030a295a76f/591387E803F98FD12B7776A7270F0A64/bi-260302-mwc-overall-en.jpg — 200 — 22.8 KiB — 60 ms — h2https://www.telekom.com/resource/image/1096698/landscape_ratio4x3/320/240/fd07c1796f4a926480baaefc0009bfff/BDA005AB9EF89D20C5AAEC3329B8FE65/bi-net-zero.jpgwww.telekom.com/resource/image/1096... https://www.telekom.com/resource/image/1096698/landscape_ratio4x3/320/240/fd07c1796f4a926480baaefc0009bfff/BDA005AB9EF89D20C5AAEC3329B8FE65/bi-net-zero.jpg — 200 — 8.7 KiB — 48 ms — h2https://www.telekom.com/resource/image/1055158/landscape_ratio4x3/320/240/372e1f1fa677468f7169a987bdcea29c/67AC2ED563F6D900168F55D2226C82A6/bi-231207-ki-bei-der-telekom-en.jpgwww.telekom.com/resource/image/1055... https://www.telekom.com/resource/image/1055158/landscape_ratio4x3/320/240/372e1f1fa677468f7169a987bdcea29c/67AC2ED563F6D900168F55D2226C82A6/bi-231207-ki-bei-der-telekom-en.jpg — 200 — 10.3 KiB — 48 ms — h2https://www.telekom.com/dynamic/service/guid/64www.telekom.com/dynamic/service/gui... https://www.telekom.com/dynamic/service/guid/64 — 204 — 1.1 KiB — 42 ms — h2https://www.telekom.com/resource/crblob/1021450/05272d789be738a790edff915a075ec4/favicon-svg-data.svgwww.telekom.com/resource/crblob/102... https://www.telekom.com/resource/crblob/1021450/05272d789be738a790edff915a075ec4/favicon-svg-data.svg — 200 — 3.0 KiB — 38 ms — h2https://www.telekom.com/resource/crblob/1093970/f58449c3f626c8c3337949bfdfab0fab/favicon-ico-data.icowww.telekom.com/resource/crblob/109... https://www.telekom.com/resource/crblob/1093970/f58449c3f626c8c3337949bfdfab0fab/favicon-ico-data.ico — 200 — 10.2 KiB — 38 ms — h2https://www.telekom.com/resource/image/1102826/landscape_ratio16x9/768/432/61f592f72c8d7ab034b0395aa8f07e3e/7979AC65058F299B55FBE20C00C4D1E0/bi-260226-bpk-01-en.jpgwww.telekom.com/resource/image/1102... https://www.telekom.com/resource/image/1102826/landscape_ratio16x9/768/432/61f592f72c8d7ab034b0395aa8f07e3e/7979AC65058F299B55FBE20C00C4D1E0/bi-260226-bpk-01-en.jpg — 200 — 51.2 KiB — 40 ms — h2https://www.telekom.com/resource/image/1055158/landscape_ratio16x9/768/432/62798fc39f452fa1dc10831daf11a0a9/12139D371EA68616BB8D0F7F777453F8/bi-231207-ki-bei-der-telekom-en.jpgwww.telekom.com/resource/image/1055... https://www.telekom.com/resource/image/1055158/landscape_ratio16x9/768/432/62798fc39f452fa1dc10831daf11a0a9/12139D371EA68616BB8D0F7F777453F8/bi-231207-ki-bei-der-telekom-en.jpg — 200 — 29.6 KiB — 40 ms — h2https://www.telekom.com/resource/image/1081512/landscape_ratio4x3/320/240/6aa1291d30ca659e1fbf45e065fc7c49/D66F80E89FA0C2961FB9F74B472409CA/bi-symbolbild-hauptbild-ohne-text-en.jpgwww.telekom.com/resource/image/1081... https://www.telekom.com/resource/image/1081512/landscape_ratio4x3/320/240/6aa1291d30ca659e1fbf45e065fc7c49/D66F80E89FA0C2961FB9F74B472409CA/bi-symbolbild-hauptbild-ohne-text-en.jpg — 200 — 11.4 KiB — 49 ms — h2https://www.telekom.com/resource/image/639656/landscape_ratio4x3/320/240/ed95581b567bfc4659621b0486c37592/4DE6DAE5E9AC578F0BF587B0A28E8A7F/bi-211028-specials-teaserbild-en.jpgwww.telekom.com/resource/image/6396... https://www.telekom.com/resource/image/639656/landscape_ratio4x3/320/240/ed95581b567bfc4659621b0486c37592/4DE6DAE5E9AC578F0BF587B0A28E8A7F/bi-211028-specials-teaserbild-en.jpg — 200 — 24.0 KiB — 49 ms — h2https://hub.telekom.com/telekom/com/2/i.gifhub.telekom.com/telekom/com/2/i.gif https://hub.telekom.com/telekom/com/2/i.gif — 200 — 776 B — 30 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 524ms · 227KB · €6/mo
www.telekom.com
Other
Costly
Execution 214ms
Transfer 134 KB
Unused 65%
Monthly Cost €2/mo
www.telekom.com
Other
Optional
Execution 160ms
Transfer 32 KB
Monthly Cost €2/mo
tags-eu.tiqcdn.com
Other
Optional
Execution 89ms
Transfer 61 KB
Unused 40%
Monthly Cost €1/mo
Unattributable
Other
Optional
Execution 61ms
Transfer 0 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.telekom.com adds 214ms and costs ~€2/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.telekom.com takes 214ms 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

65% of www.telekom.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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