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.
1.15 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.87 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.14 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.072
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.51 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.
13.81 s
Page Load Progression
FPage Weight BudgetAction16.0 MB transferred, 100 requestsFIX
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
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
FJS Execution CostAction17063ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://doubleverify.com/ | 9516ms | 81ms | 8ms | 1st |
| Unattributable | 3231ms | 93ms | 0ms | 3rd |
| https://js.hs-analytics.net/analytics/1776359400000/46126064.js | 991ms | 670ms | 18ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-709822676 | 556ms | 494ms | 58ms | 3rd |
| https://acsbapp.com/apps/app/dist/js/app.js | 541ms | 380ms | 97ms | 3rd |
| https://doubleverify.com/_hcms/forms/v2.js | 521ms | 385ms | 77ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-N856K2BR7S | 347ms | 230ms | 69ms | 3rd |
| https://static.userback.io/widget/v1.js | 293ms | 196ms | 80ms | 3rd |
| https://snap.licdn.com/li.lms-analytics/insight.min.js | 233ms | 177ms | 7ms | 3rd |
| https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.js | 212ms | 94ms | 0ms | 3rd |
Showing top 10 of 15 scripts
FJS BundlesAction22 scripts, 544 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-N856K2BR7S&cx=c>m=4e64f0 | 177 KB | 115 KB (65%) | ✓ | 3rd |
| https://acsbapp.com/apps/app/dist/js/app.js | 222 KB | 114 KB (53%) | ✓ | 3rd |
| https://static.userback.io/widget/v1.js | 161 KB | 92 KB (58%) | ✓ | 3rd |
| https://doubleverify.com/_hcms/forms/v2.js | 201 KB | 78 KB (40%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-N856K2BR7S | 177 KB | 70 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-709822676 | 145 KB | 53 KB (37%) | ✓ | 3rd |
| https://consent.trustarc.com/asset/notice.js/v/v1.7-1729 | 36 KB | 23 KB (64%) | ✓ | 3rd |
| https://doubleverify.com/hs/hsstatic/content-cwv-embed/static-1.1293/embed.js | 5 KB | — | ✓ | 1st |
| https://js.hsforms.net/forms/embed/v2.js | 1 KB | — | ✓ | 3rd |
| https://consent.trustarc.com/notice?domain=doubleverify.com&c=teconsent&js=nj¬iceType=bb&text=true>m=1&pcookie | 13 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
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
DPage Weight InventoryAction100 resources · 16.0 MB · 544 KB savings availableFIX
~544.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 100 resources | 16.0 MiB | ||||||
CImage OptimizationAction49 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
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
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
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
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
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
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
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
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
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
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
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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact7% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (296 KB)PASS
Web fonts
6
296 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 ~23 KB and ~46 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints4 hints, 0 missing preconnectsPASS
Current Resource Hints
4 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+HTTP Cachingmax-age=5 (5 seconds)PASS
s-maxage=36000, max-age=5
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 36000 | CDN caches for 10 hours |
| max-age | 5 | Cache for 5 seconds |
Network Waterfall100 requests over 40930msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 3231ms | 0 KB | — | €35/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 991ms | 42 KB | — | €11/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 556ms | 145 KB | 37% | €6/mo | Costly |
acsbapp.com acsbapp.com | Other | 541ms | 222 KB | 53% | €6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 347ms | 177 KB | 40% | €4/mo | Costly |
static.userback.io static.userback.io | Other | 293ms | 161 KB | 58% | €3/mo | Costly |
LinkedIn Insight snap.licdn.com | Advertising | 233ms | 19 KB | — | €3/mo | Costly |
46126064.fs1.hubspotusercontent-na1.net 46126064.fs1.hubspotusercontent-na1.net | Other | 212ms | 0 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 209ms | 177 KB | 65% | €2/mo | Costly |
consent.trustarc.com consent.trustarc.com | Other | 179ms | 13 KB | — | €2/mo | Optional |
js.hubspot.com js.hubspot.com | Other | 90ms | 28 KB | — | €1/mo | Optional |
js.hs-banner.com js.hs-banner.com | Other | 86ms | 21 KB | — | €1/mo | Optional |
consent.trustarc.com consent.trustarc.com | Other | 58ms | 36 KB | 64% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 3231ms and costs ~€35/month
- HubSpot Analytics adds 991ms and costs ~€11/month
- Google Tag Manager adds 556ms and costs ~€6/month
- acsbapp.com adds 541ms and costs ~€6/month
- Google Tag Manager adds 347ms and costs ~€4/month
- static.userback.io adds 293ms and costs ~€3/month
- LinkedIn Insight adds 233ms and costs ~€3/month
- 46126064.fs1.hubspotusercontent-na1.net adds 212ms and costs ~€2/month
- Google Tag Manager adds 209ms and costs ~€2/month
41% 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 3231ms 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
HubSpot Analytics takes 991ms 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 556ms 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
acsbapp.com takes 541ms 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 acsbapp.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
Google Tag Manager takes 347ms 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
static.userback.io takes 293ms 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 static.userback.io'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
LinkedIn Insight takes 233ms 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
46126064.fs1.hubspotusercontent-na1.net takes 212ms 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 209ms 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
65% of Google Tag Manager'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
64% of consent.trustarc.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