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.
4.95 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.54 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.66 s
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.
4.95 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.
17.25 s
Page Load Progression
FPage Weight BudgetAction3.0 MB transferred, 54 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
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
FJS Execution CostAction7836ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://rss.com/_nuxt/e5c3d72.js | 3510ms | 2523ms | 648ms | 1st |
| https://rss.com/ | 991ms | 38ms | 55ms | 1st |
| https://ob.calderovian.com/i/945d535c7c89c696244fd56b63c598e3.js | 778ms | 672ms | 21ms | 3rd |
| Unattributable | 764ms | 24ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-H8T828D0JG&cx=c>m=4e64k0 | 593ms | 493ms | 92ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MJMDPRR>m_auth=eG1slwLxXT4Ot0vqraBpnw>m_preview=env-62>m_cookies_win=x | 523ms | 363ms | 95ms | 3rd |
| https://rss.com/_nuxt/5c2299f.js | 377ms | 22ms | 326ms | 1st |
| https://bat.bing.com/bat.js | 123ms | 74ms | 45ms | 3rd |
| https://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js | 110ms | 91ms | 15ms | 3rd |
| https://bat.bing.com/p/insights/s/0.8.59 | 66ms | 56ms | 7ms | 3rd |
FJS BundlesAction18 scripts, 543 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://rss.com/_nuxt/5c2299f.js | 487 KB | 344 KB (71%) | ✓ | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-MJMDPRR>m_auth=eG1slwLxXT4Ot0vqraBpnw>m_preview=env-62>m_cookies_win=x | 152 KB | 65 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-H8T828D0JG&cx=c>m=4e64k0 | 173 KB | 64 KB (37%) | ✓ | 3rd |
| https://rss.com/_nuxt/e5c3d72.js | 631 KB | 39 KB (6%) | ✓ | 1st |
| https://rss.com/_nuxt/7b8f4c9.js | 79 KB | 31 KB (40%) | ✓ | 1st |
| https://ob.calderovian.com/i/945d535c7c89c696244fd56b63c598e3.js | 45 KB | — | ✓ | 3rd |
| https://rss.com/_nuxt/2df93db.js | 9 KB | — | ✓ | 1st |
| https://rss.com/_nuxt/cca562e.js | 23 KB | — | ✓ | 1st |
| https://rss.com/_nuxt/7bb1630.js | 2 KB | — | ✓ | 1st |
| https://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js | 32 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 InventoryAction54 resources · 3.0 MB · 543 KB savings availableFIX
~542.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 54 resources | 3.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction19 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.
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
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 Impact18% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (107 KB)PASS
Web fonts
5
107 KB total
Render-blocking
0
of 5
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 HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall54 requests over 5271msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
ob.calderovian.com ob.calderovian.com | Other | 778ms | 45 KB | — | $10/mo | Costly |
Unattributable Unattributable | Other | 764ms | 0 KB | — | $10/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 593ms | 173 KB | 37% | $8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 523ms | 152 KB | 43% | $7/mo | Costly |
Bing UET bat.bing.com | Advertising | 123ms | 15 KB | — | $2/mo | Optional |
Mixpanel cdn.mxpnl.com | Analytics | 110ms | 32 KB | — | $1/mo | Optional |
Bing UET bat.bing.com | Advertising | 66ms | 16 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- ob.calderovian.com adds 778ms and costs ~$10/month
- Unattributable adds 764ms and costs ~$10/month
- Google Tag Manager adds 593ms and costs ~$8/month
- Google Tag Manager adds 523ms and costs ~$7/month
ob.calderovian.com takes 778ms 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 764ms 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 593ms 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 523ms 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