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.
13.05 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
478 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.046
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.07 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.
15.09 s
Page Load Progression
375 ms
750 ms
1.1 s 1.5 s 1.9 s 2.2 s 2.6 s 3.0 sDPage Weight BudgetAction2.4 MB transferred, 119 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
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
FJS Execution CostAction3658ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://petapixel.com/ | 805ms | 45ms | 2ms | 1st |
| https://cmp.inmobi.com/tcfv2/60/cmp2ui-en.js | 501ms | 271ms | 37ms | 3rd |
| Unattributable | 440ms | 6ms | 0ms | 3rd |
| https://cmp.inmobi.com/tcfv2/60/cmp2.js?referer=petapixel.com | 429ms | 313ms | 44ms | 3rd |
| https://petapixel.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js | 327ms | 233ms | 13ms | 1st |
| https://cdn.viglink.com/api/vglnk.js | 302ms | 248ms | 5ms | 3rd |
| https://petapixel.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 254ms | 244ms | 3ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-4GYB6ZWHEC | 205ms | 168ms | 35ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KZ3KDMNP | 137ms | 105ms | 28ms | 3rd |
| https://petapixel.com/wp-content/plugins/post-carousel/public/assets/js/swiper-bundle.min.js?ver=3.0.13 | 70ms | 19ms | 15ms | 1st |
Showing top 10 of 13 scripts
DJS BundlesAction25 scripts, 410 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-4GYB6ZWHEC&cx=c>m=4e64h1 | 153 KB | 107 KB (70%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KZ3KDMNP | 114 KB | 63 KB (56%) | ✓ | 3rd |
| https://cmp.inmobi.com/tcfv2/60/cmp2.js?referer=petapixel.com | 130 KB | 63 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-4GYB6ZWHEC | 153 KB | 62 KB (41%) | ✓ | 3rd |
| https://cmp.inmobi.com/tcfv2/60/cmp2ui-en.js | 123 KB | 57 KB (46%) | ✓ | 3rd |
| https://commerce-js.sovrn.co/commerce-js.iife.js | 49 KB | 30 KB (62%) | ✓ | 3rd |
| https://petapixel.com/wp-content/plugins/post-carousel/public/assets/js/swiper-bundle.min.js?ver=3.0.13 | 50 KB | 28 KB (56%) | ✓ | 1st |
| https://petapixel.com/wp-content/plugins/post-carousel/public/assets/js/scripts.min.js?ver=3.0.13 | 2 KB | — | ✓ | 1st |
| https://petapixel.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 31 KB | — | ✓ | 1st |
| https://cmp.inmobi.com/choice/16iVe7IhjkhDo/petapixel.com/choice.js?tag_version=V3 | 2 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 InventoryAction119 resources · 2.4 MB · 410 KB savings availableFIX
~409.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 119 resources | 2.4 MiB | ||||||
BImage Optimization55 images, 0 KB saveableREVIEW
AThird-Party Impact40% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (22 KB)PASS
Web fonts
1
22 KB total
Render-blocking
0
of 1
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 Hints9 hints, 0 missing preconnectsPASS
Current Resource Hints
9 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
A+HTTP Cachingmax-age=600 (10 minutes)PASS
max-age=600, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 600 | Cache for 10 minutes |
| must-revalidate | — | Must recheck with server after expiry |
Network Waterfall119 requests over 3297msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cmp.inmobi.com cmp.inmobi.com | Other | 501ms | 123 KB | 46% | €5/mo | Costly |
Unattributable Unattributable | Other | 440ms | 0 KB | — | €5/mo | Costly |
cmp.inmobi.com cmp.inmobi.com | Other | 429ms | 130 KB | 49% | €5/mo | Costly |
cdn.viglink.com cdn.viglink.com | Other | 302ms | 29 KB | — | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 205ms | 153 KB | 41% | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 137ms | 114 KB | 56% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 65ms | 153 KB | 70% | €1/mo | Optional |
commerce-js.sovrn.co commerce-js.sovrn.co | Other | 62ms | 49 KB | 62% | €1/mo | Optional |
b-code.liadm.com b-code.liadm.com | Other | 60ms | 47 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- cmp.inmobi.com adds 501ms and costs ~€5/month
- Unattributable adds 440ms and costs ~€5/month
- cmp.inmobi.com adds 429ms and costs ~€5/month
- cdn.viglink.com adds 302ms and costs ~€3/month
- Google Tag Manager adds 205ms and costs ~€2/month
60% 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
cmp.inmobi.com takes 501ms 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 440ms 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.inmobi.com takes 429ms 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
cdn.viglink.com takes 302ms 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 205ms 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
56% 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
70% 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
62% of commerce-js.sovrn.co'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