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.
5.98 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.68 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.36 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.70 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.
19.49 s
Page Load Progression
DPage Weight BudgetAction2.2 MB transferred, 96 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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction7324ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1298ms | 188ms | 0ms | 3rd |
| https://www.emerald.com/ | 610ms | 139ms | 74ms | 3rd |
| https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js | 605ms | 450ms | 153ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W9XTGPJQ | 582ms | 441ms | 78ms | 3rd |
| https://emerald.hum.works/js/main.js | 488ms | 333ms | 150ms | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js | 417ms | 152ms | 15ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6NDQQNRVPP&cx=c>m=4e64k0 | 370ms | 303ms | 64ms | 3rd |
| https://js.stripe.com/v3/ | 367ms | 223ms | 132ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-EMHYNRVMW9&cx=c>m=4e64k0 | 363ms | 297ms | 61ms | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 355ms | 283ms | 29ms | 3rd |
Showing top 10 of 21 scripts
FJS BundlesAction35 scripts, 821 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://js.stripe.com/v3/ | 226 KB | 164 KB (73%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 188 KB | 143 KB (76%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js | 252 KB | 122 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-EMHYNRVMW9&cx=c>m=4e64k0 | 157 KB | 67 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6NDQQNRVPP&cx=c>m=4e64k0 | 154 KB | 64 KB (42%) | ✓ | 3rd |
| https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/otBannerSdk.js | 120 KB | 62 KB (52%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W9XTGPJQ | 147 KB | 57 KB (39%) | ✓ | 3rd |
| https://emerald.hum.works/js/main.js | 104 KB | 46 KB (44%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 38 KB (67%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 32 KB (33%) | ✓ | 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
FPage Weight InventoryAction96 resources · 2.2 MB · 821 KB savings availableFIX
~821.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 96 resources | 2.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction10 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
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 Loading4 fonts (71 KB)PASS
Web fonts
4
71 KB total
Render-blocking
0
of 4
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 ~6 KB and ~12 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall96 requests over 4154msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1298ms | 0 KB | — | $17/mo | Costly |
www.emerald.com www.emerald.com | Other | 610ms | 13 KB | — | $8/mo | Costly |
jsDelivr cdn.jsdelivr.net | CDN | 605ms | 252 KB | 49% | $8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 582ms | 147 KB | 39% | $8/mo | Costly |
emerald.hum.works emerald.hum.works | Other | 488ms | 104 KB | 44% | $6/mo | Costly |
ajax.googleapis.com ajax.googleapis.com | Other | 417ms | 31 KB | — | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 370ms | 154 KB | 42% | $5/mo | Costly |
Stripe js.stripe.com | Payment | 367ms | 226 KB | 73% | $5/mo | Essential |
Google Tag Manager www.googletagmanager.com | Tag Manager | 363ms | 157 KB | 43% | $5/mo | Costly |
Hotjar script.hotjar.com | Session Replay | 355ms | 57 KB | 67% | $5/mo | Costly |
www.emerald.com www.emerald.com | Other | 343ms | 0 KB | — | $5/mo | Costly |
cookie-cdn.cookiepro.com cookie-cdn.cookiepro.com | Other | 335ms | 120 KB | 52% | $4/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 270ms | 188 KB | 76% | $4/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 245ms | 97 KB | 33% | $3/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 187ms | 47 KB | — | $2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 116ms | 34 KB | — | $2/mo | Optional |
platform-api.sharethis.com platform-api.sharethis.com | Other | 100ms | 13 KB | — | $1/mo | Optional |
platform-api.sharethis.com platform-api.sharethis.com | Other | 92ms | 47 KB | 57% | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 74ms | 19 KB | — | $1/mo | Optional |
play.cadmore.media play.cadmore.media | Other | 57ms | 5 KB | — | $1/mo | Optional |
cookie-cdn.cookiepro.com cookie-cdn.cookiepro.com | Other | 52ms | 9 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1298ms and costs ~$17/month
- www.emerald.com adds 610ms and costs ~$8/month
- jsDelivr adds 605ms and costs ~$8/month
- Google Tag Manager adds 582ms and costs ~$8/month
- emerald.hum.works adds 488ms and costs ~$6/month
- ajax.googleapis.com adds 417ms and costs ~$6/month
- Google Tag Manager adds 370ms and costs ~$5/month
- Google Tag Manager adds 363ms and costs ~$5/month
- Hotjar adds 355ms and costs ~$5/month
- www.emerald.com adds 343ms and costs ~$5/month
- cookie-cdn.cookiepro.com adds 335ms and costs ~$4/month
- securepubads.g.doubleclick.net adds 270ms and costs ~$4/month
- Facebook Pixel adds 245ms and costs ~$3/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
Unattributable takes 1298ms 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
www.emerald.com takes 610ms 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
jsDelivr takes 605ms 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 582ms 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
emerald.hum.works takes 488ms 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
ajax.googleapis.com takes 417ms 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 370ms 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
73% of Stripe'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 363ms 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
Hotjar takes 355ms 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
67% of Hotjar'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.emerald.com takes 343ms 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
cookie-cdn.cookiepro.com takes 335ms 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
52% of cookie-cdn.cookiepro.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 270ms 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
76% 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
Facebook Pixel takes 245ms 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
57% of platform-api.sharethis.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