Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
887 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.81 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
163 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.77 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.
2.44 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.2 MB transferred, 42 requestsREVIEW
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
BImage Optimization5 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BJS Execution Cost954ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk-finder-5579438-15.js | 356ms | 251ms | 5ms | 3rd |
| https://www.ihk.de/ | 316ms | 2ms | 1ms | 3rd |
| Unattributable | 87ms | 2ms | 0ms | 3rd |
| https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/gfilibs-5579434-17.js | 73ms | 44ms | 14ms | 3rd |
| https://ihk24.epccm19.com/app.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba151be83&domain=f82a90a | 66ms | 27ms | 4ms | 3rd |
| https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js | 55ms | 38ms | 7ms | 3rd |
CJS BundlesAction9 scripts, 156 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/gfilibs-5579434-17.js | 138 KB | 91 KB (70%) | ✓ | 3rd |
| https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js | 74 KB | 40 KB (60%) | ✓ | 3rd |
| https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk-finder-5579438-15.js | 57 KB | 25 KB (51%) | ✓ | 3rd |
| https://ihk24.epccm19.com/app.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba151be83&domain=f82a90a | 31 KB | — | ✓ | 3rd |
| https://www.ihk.de/blueprint/servlet/resource/system/defaults/patch-4179742-15.js | 7 KB | — | ✓ | 3rd |
| https://code.etracker.com/code/e.js | 31 KB | — | ✓ | 3rd |
| https://ihk24.epccm19.com/plugins/Ccm19ScriptPlaceholder/module.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba151be83&domain=f82a90a&gen=2&theme=53d6a80&lang=de_DE&v=1776808028 | 2 KB | — | ✓ | 3rd |
| https://code.etracker.com/t.js?v=ee485f6&et=1bxU6m | 6 KB | — | ✓ | 3rd |
| https://www.etracker.de/cntcc?&&et=1bxU6m&v=6.0&tc=17768181394296&pagename=%5BIHK_DE%20IHK24%5D%20Startseite%20%5B1-5246320%5D%20&ilevel=1&areas=IHK24%2FIHK_DE%2Fihkde_channel&et_se=1&et_source_url=https%3A%2F%2Fwww.ihk.de%2F&cc_ordercurr=EUR&cc_ordertype=lead&cc_baskettype=basket&et_seg2=%5Bnicht%20angemeldet%5D&block_cookies=true&respect_dnt=true&et_bs=1&code_source=https%3A%2F%2Fcode.etracker.com%2Fcode%2Fe.js&code_async=true&page_id=818139927&et_sbscr=0&coid=4ece667bb153285ae4dec7b47009f614&et_cblk=1&et_cd=www.ihk.de&dh=8ldca%2F1yDFiDkJBh4uso%2F9xK3BL5z75n&clt=24 | 0 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
CPage Weight InventoryAction42 resources · 1.2 MB · 156 KB savings availableREVIEW
~156.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 42 resources | 1.2 MiB | ||||||
A+Text CompressionAll text resources are compressedPASS
A+Font Loading13 fonts (414 KB)PASS
Web fonts
13
414 KB total
Render-blocking
0
of 13
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- 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 ~42 KB and ~84 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: OVHcloud
Network Waterfall42 requests over 2735msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.ihk.de www.ihk.de | Other | 356ms | 57 KB | 51% | €5/mo | Costly |
www.ihk.de www.ihk.de | Other | 316ms | 0 KB | — | €4/mo | Costly |
Unattributable Unattributable | Other | 87ms | 0 KB | — | €1/mo | Optional |
www.ihk.de www.ihk.de | Other | 73ms | 138 KB | 70% | €1/mo | Optional |
ihk24.epccm19.com ihk24.epccm19.com | Other | 66ms | 31 KB | — | €1/mo | Optional |
www.ihk.de www.ihk.de | Other | 55ms | 74 KB | 60% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.ihk.de adds 356ms and costs ~€5/month
- www.ihk.de adds 316ms and costs ~€4/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.ihk.de takes 356ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
51% of www.ihk.de's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
www.ihk.de takes 316ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
70% of www.ihk.de's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
60% of www.ihk.de's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev