Performance
· 17 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.
3.42 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.82 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
965 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.
4.09 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.
10.06 s
Page Load Progression
DThird-Party ImpactAction94% third-party, 0 ms blockingFIX
DJS Execution CostAction3293ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://euobserver.com/ | 653ms | 32ms | 9ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-P4LQ59PQ47 | 519ms | 416ms | 73ms | 3rd |
| Unattributable | 502ms | 78ms | 0ms | 3rd |
| https://fundingchoicesmessages.google.com/i/10537508?ers=3 | 477ms | 450ms | 22ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 337ms | 261ms | 59ms | 3rd |
| https://beam.euobserver.com/assets/lib/js/remplib.js?v202506091445 | 206ms | 184ms | 18ms | 3rd |
| https://campaign.euobserver.com/assets/lib/js/banner.js?id=5930b87560cc6450ecb445e7ad9ef1af | 113ms | 85ms | 27ms | 3rd |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js | 112ms | 101ms | 10ms | 3rd |
| https://campaign.euobserver.com/assets/lib/js/remplib.js?v202506091445 | 93ms | 81ms | 10ms | 3rd |
| https://fundingchoicesmessages.google.com/f/AGSKWxXR3G6AvFtiCUXxANSRMFy3Rrsdx8PrUifNLjOZm0Nbr1HrnPFy6m_O22DLFhb1OjNgCHrbiaA2pFsMRKBmkD9aQe-dU82h9bR_24rkFp9jjEQDdpoi--mn4uM0EzmhGkR5n2FTqw==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODk5OTMyLDY4NDAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly9ldW9ic2VydmVyLmNvbS8iLG51bGwsW1s4LCJwU0prbzE5NklIMCJdLFs5LCJlbi1VUyJdLFsxOCwiW1tbbnVsbCwxMjIwXV1dIl0sWzM1LCIxNzc2ODk5OTMyIl0sWzI2LCI3Il0sWzE5LCIyIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyNSwiW1s5NTM4NjE5MF1dIl0sWzI5LCJmYWxzZSJdXV0 | 83ms | 66ms | 1ms | 3rd |
Showing top 10 of 13 scripts
DJS BundlesAction19 scripts, 314 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 109 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-P4LQ59PQ47 | 175 KB | 68 KB (39%) | ✓ | 3rd |
| https://beam.euobserver.com/assets/lib/js/remplib.js?v202506091445 | 137 KB | 66 KB (48%) | ✓ | 3rd |
| https://fundingchoicesmessages.google.com/i/10537508?ers=3 | 70 KB | 36 KB (53%) | ✓ | 3rd |
| https://campaign.euobserver.com/assets/lib/js/banner.js?id=5930b87560cc6450ecb445e7ad9ef1af | 72 KB | 35 KB (49%) | ✓ | 3rd |
| https://euobserver.com/wp-content/themes/eo-theme/build/theme-script.c7e66de8d4d76bcfedcb.js | 5 KB | — | ✓ | 1st |
| https://campaign.euobserver.com/vendor/campaign/showtime.php?data=%7B%22version%22%3A1%2C%22browserId%22%3A%2299140727-d83d-42ef-9e8d-481d92363ebd%22%2C%22language%22%3A%22en-US%22%2C%22url%22%3A%22https%3A%2F%2Feuobserver.com%2F%22%2C%22referer%22%3Anull%2C%22sessionReferer%22%3Anull%2C%22campaigns%22%3A%7B%7D%2C%22campaignsSession%22%3A%7B%7D%2C%22cache%22%3Anull%2C%22userAgent%22%3A%22Mozilla%2F5.0%20(Linux%3B%20Android%2011%3B%20moto%20g%20power%20(2022))%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F146.0.0.0%20Mobile%20Safari%2F537.36%22%2C%22usingAdblock%22%3Afalse%2C%22pageviewAttributes%22%3A%7B%22article%22%3A%220%22%7D%7D&callback=rempcampaign_callback_json0 | 4 KB | — | ✓ | 3rd |
| https://campaign.euobserver.com/assets/lib/js/remplib.js?v202506091445 | 24 KB | — | ✓ | 3rd |
| https://euobserver.com/wp-includes/js/dist/i18n.min.js?ver=c26c3dc7bed366793375 | 5 KB | — | ✓ | 1st |
| https://euobserver.com/wp-includes/js/dist/hooks.min.js?ver=dd5603f07f9220ed27f1 | 6 KB | — | ✓ | 1st |
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
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
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.1 MB transferred, 58 requestsREVIEW
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
BImage Optimization4 images, 0 KB saveableREVIEW
BPage Weight Inventory58 resources · 1.1 MB · 314 KB savings availableREVIEW
~313.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 58 resources | 1.1 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (131 KB)PASS
Web fonts
6
131 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~1 KB and ~2 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall58 requests over 3252msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 519ms | 175 KB | 39% | €6/mo | Costly |
Unattributable Unattributable | Other | 502ms | 0 KB | — | €5/mo | Costly |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 477ms | 70 KB | 53% | €5/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 337ms | 188 KB | 58% | €4/mo | Costly |
beam.euobserver.com beam.euobserver.com | Other | 206ms | 137 KB | 48% | €2/mo | Costly |
campaign.euobserver.com campaign.euobserver.com | Other | 113ms | 72 KB | 49% | €1/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 112ms | 34 KB | — | €1/mo | Optional |
campaign.euobserver.com campaign.euobserver.com | Other | 93ms | 24 KB | — | €1/mo | Optional |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 83ms | 1 KB | — | €1/mo | Optional |
ep2.adtrafficquality.google ep2.adtrafficquality.google | Other | 69ms | 8 KB | — | €1/mo | Optional |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 67ms | 4 KB | — | €1/mo | Optional |
/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.pSJko196IH0.es5.O/d=1/rs=AJlcJMwW9cECbTFkq4PRqOWQ0smSYbz1fw/m=kernel_loader,loader_js_executable /_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.pSJko196IH0.es5.O/d=1/rs=AJlcJMwW9cECbTFkq4PRqOWQ0smSYbz1fw/m=kernel_loader,loader_js_executable | Other | 63ms | 0 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- Google Tag Manager adds 519ms and costs ~€6/month
- Unattributable adds 502ms and costs ~€5/month
- fundingchoicesmessages.google.com adds 477ms and costs ~€5/month
- securepubads.g.doubleclick.net adds 337ms and costs ~€4/month
- beam.euobserver.com adds 206ms and costs ~€2/month
80% 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
Google Tag Manager takes 519ms 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
Unattributable takes 502ms 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
fundingchoicesmessages.google.com takes 477ms 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
53% of fundingchoicesmessages.google.com'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
securepubads.g.doubleclick.net takes 337ms 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
58% of securepubads.g.doubleclick.net'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
beam.euobserver.com takes 206ms 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