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.
11.74 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
23.97 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
926 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.
15.79 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.
24.66 s
Page Load Progression
FPage Weight BudgetAction6.4 MB transferred, 58 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
FJS Execution CostAction5839ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://adr.org/common.js?async | 2276ms | 2183ms | 32ms | 1st |
| Unattributable | 771ms | 15ms | 0ms | 3rd |
| https://adr.org/ | 588ms | 19ms | 4ms | 1st |
| https://adr.org/assets/index-hf5uQyB3.js | 524ms | 461ms | 5ms | 1st |
| https://cmp.osano.com/6orHSTEE9zcK1aZK/88e10f9e-cd04-4a60-b5d0-bc971b5649af/osano.js | 409ms | 353ms | 24ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-2NJ0HVM6YV&cx=c>m=4e64k0 | 380ms | 318ms | 58ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NGKJQ5B | 296ms | 249ms | 41ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-617207326&cx=c>m=4e64k0 | 249ms | 213ms | 33ms | 3rd |
| https://forms.adr.org/a4flkt7l2b/z9gd/7348e447-1b00-4242-9c5a-669142f8ada2/adr.org/jsonp/z?cb=1776890116015&callback=__dgogctc40abub | 221ms | 211ms | 0ms | 3rd |
| https://forms.adr.org/w37htfhcq2/vendor/7348e447-1b00-4242-9c5a-669142f8ada2/main.js?cb=8DCB3ECB413095BC01D1B29BF4757228 | 125ms | 81ms | 35ms | 3rd |
FJS BundlesAction22 scripts, 1.3 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://adr.org/assets/index-hf5uQyB3.js | 1764 KB | 1034 KB (59%) | ✓ | 1st |
| https://forms.adr.org/w37htfhcq2/vendor/7348e447-1b00-4242-9c5a-669142f8ada2/main.js?cb=8DCB3ECB413095BC01D1B29BF4757228 | 116 KB | 68 KB (58%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NGKJQ5B | 148 KB | 64 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-617207326&cx=c>m=4e64k0 | 144 KB | 61 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-2NJ0HVM6YV&cx=c>m=4e64k0 | 178 KB | 59 KB (33%) | ✓ | 3rd |
| https://cmp.osano.com/6orHSTEE9zcK1aZK/88e10f9e-cd04-4a60-b5d0-bc971b5649af/osano.js | 93 KB | 32 KB (35%) | ✓ | 3rd |
| https://forms.adr.org/w37htfhcq2/vendor/7348e447-1b00-4242-9c5a-669142f8ada2/custom.js?cb=68529BFAD5E577AD07C91A5AA8D7EE58 | 16 KB | — | ✓ | 3rd |
| https://forms.adr.org/w37htfhcq2/vendor/7348e447-1b00-4242-9c5a-669142f8ada2/lightbox/4b06d18d-1c00-40c3-be1e-19e047d73c7f/effects.js?cb=639123938278700000 | 2 KB | — | ✓ | 3rd |
| https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js | 17 KB | — | ✓ | 3rd |
| https://adr.org/js/site.js | 2 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
FPage Weight InventoryAction58 resources · 6.4 MB · 1.3 MB savings availableFIX
~1.3 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 58 resources | 6.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization13 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact11% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (99 KB)PASS
Web fonts
4
99 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints3 hints, 0 missing preconnectsPASS
Current Resource Hints
3 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall58 requests over 9464msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 771ms | 0 KB | — | €8/mo | Costly |
cmp.osano.com cmp.osano.com | Other | 409ms | 93 KB | 35% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 380ms | 178 KB | 33% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 296ms | 148 KB | 43% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 249ms | 144 KB | 42% | €3/mo | Costly |
forms.adr.org forms.adr.org | Other | 221ms | 1 KB | — | €2/mo | Costly |
forms.adr.org forms.adr.org | Other | 125ms | 116 KB | 58% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 771ms and costs ~€8/month
- cmp.osano.com adds 409ms and costs ~€4/month
- Google Tag Manager adds 380ms and costs ~€4/month
- Google Tag Manager adds 296ms and costs ~€3/month
- Google Tag Manager adds 249ms and costs ~€3/month
- forms.adr.org adds 221ms and costs ~€2/month
42% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Unattributable takes 771ms 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
cmp.osano.com takes 409ms 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
Google Tag Manager takes 380ms 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
Google Tag Manager takes 296ms 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
Google Tag Manager takes 249ms 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
forms.adr.org takes 221ms 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 forms.adr.org'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