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.
1.10 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.23 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
344 ms
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.
1.63 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.
3.18 s
Page Load Progression
750 ms 1.5 s
2.3 s
3.0 s
3.8 s 4.5 s 5.3 s
6.0 sFPage Weight BudgetAction4.1 MB transferred, 303 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 Execution CostAction2824ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://chatgpt.com/cdn/assets/1a7ebd5f-g6n5e509emapasuy.js | 1718ms | 1502ms | 7ms | 1st |
| Unattributable | 643ms | 107ms | 0ms | 3rd |
| https://chatgpt.com/ | 208ms | 28ms | 2ms | 1st |
| https://chatgpt.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 102ms | 94ms | 1ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-9SHBSK2D9J | 89ms | 75ms | 14ms | 3rd |
| https://chatgpt.com/cdn/assets/4813494d-d9qm8ro3bsv5p9vf.js | 63ms | 47ms | 7ms | 1st |
FJS BundlesAction258 scripts, 1.8 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://chatgpt.com/cdn/assets/1a7ebd5f-g6n5e509emapasuy.js | 1743 KB | 1141 KB (65%) | ✓ | 1st |
| https://chatgpt.com/cdn/assets/97f4f1ec-ommg07qwlpqb4gqa.js | 432 KB | 346 KB (80%) | ✓ | 1st |
| https://chatgpt.com/cdn/assets/b533a235-mgtrzmjlrm12cnrx.js | 106 KB | 92 KB (88%) | ✓ | 1st |
| https://chatgpt.com/cdn/assets/4813494d-d9qm8ro3bsv5p9vf.js | 106 KB | 70 KB (66%) | ✓ | 1st |
| https://accounts.google.com/gsi/client | 96 KB | 69 KB (72%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-9SHBSK2D9J | 157 KB | 45 KB (40%) | ✓ | 3rd |
| https://chatgpt.com/cdn/assets/e693f6f9-eu93u5s1g3qt102g.js | 34 KB | 31 KB (95%) | ✓ | 1st |
| https://chatgpt.com/cdn/assets/38b1cb71-erspvxhbydwpjtil.js | 32 KB | 26 KB (84%) | ✓ | 1st |
| https://chatgpt.com/cdn/assets/089c718c-ovnt1zczjkrekrau.js | 27 KB | 25 KB (94%) | ✓ | 1st |
| https://chatgpt.com/cdn/assets/e21b3b3f-n3peyl1agcoxtuec.js | 63 KB | 22 KB (36%) | ✓ | 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 InventoryAction303 resources · 4.1 MB · 1.8 MB savings availableFIX
~1.8 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 303 resources | 4.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
A+Third-Party Impact7% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization2 images, 0 KB saveablePASS
A+Font Loading1 fonts (50 KB)PASS
Web fonts
1
50 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
Network Waterfall303 requests over 3894msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 643ms | 0 KB | — | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 89ms | 157 KB | 40% | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 643ms and costs ~$9/month
Unattributable takes 643ms 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