Performance
· 15 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.
478 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.09 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.018
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.12 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.
3.36 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 BudgetAction2.1 MB transferred, 112 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
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
DJS BundlesAction25 scripts, 404 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 | 64 KB (56%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-4GYB6ZWHEC | 153 KB | 63 KB (41%) | ✓ | 3rd |
| https://cmp.inmobi.com/tcfv2/60/cmp2.js?referer=petapixel.com | 114 KB | 57 KB (50%) | ✓ | 3rd |
| https://cmp.inmobi.com/tcfv2/60/cmp2ui-en.js | 123 KB | 56 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 (57%) | ✓ | 1st |
| https://sb.scorecardresearch.com/beacon.js | 7 KB | — | ✓ | 3rd |
| https://cdn.viglink.com/api/vglnk.js | 29 KB | — | ✓ | 3rd |
| https://petapixel.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 31 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 InventoryAction112 resources · 2.1 MB · 404 KB savings availableFIX
~404.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 112 resources | 2.1 MiB | ||||||
BThird-Party Impact43% third-party, 0 ms blockingREVIEW
BImage Optimization49 images, 0 KB saveableREVIEW
BJS Execution Cost835ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://petapixel.com/ | 261ms | 18ms | 0ms | 1st |
| Unattributable | 105ms | 2ms | 0ms | 3rd |
| https://petapixel.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js | 102ms | 74ms | 4ms | 1st |
| https://cmp.inmobi.com/tcfv2/60/cmp2ui-en.js | 99ms | 70ms | 10ms | 3rd |
| https://cmp.inmobi.com/tcfv2/60/cmp2.js?referer=petapixel.com | 86ms | 61ms | 10ms | 3rd |
| https://cdn.viglink.com/api/vglnk.js | 76ms | 61ms | 2ms | 3rd |
| https://petapixel.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 53ms | 51ms | 1ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-4GYB6ZWHEC | 53ms | 41ms | 10ms | 3rd |
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 HintsNo optimization neededPASS
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 Waterfall112 requests over 3110msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 105ms | 0 KB | — | €1/mo | Optional |
cmp.inmobi.com cmp.inmobi.com | Other | 99ms | 123 KB | 46% | €1/mo | Optional |
cmp.inmobi.com cmp.inmobi.com | Other | 86ms | 114 KB | 50% | €1/mo | Optional |
cdn.viglink.com cdn.viglink.com | Other | 76ms | 29 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 53ms | 153 KB | 41% | €1/mo | Optional |
50% 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