Performance
· 22 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.
646 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
963 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
738 ms
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.
1.68 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.
2.48 s
Page Load Progression
DJS Execution CostAction3129ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://productshotai.app/ | 876ms | 45ms | 16ms | 1st |
| https://umami.bestvid.net/recorder.js | 706ms | 645ms | 6ms | 3rd |
| https://productshotai.app/_next/static/chunks/4bd1b696-f785427dddbba9fb.js | 420ms | 48ms | 6ms | 1st |
| https://productshotai.app/_next/static/chunks/1255-32f0b2a4c4d3a714.js | 349ms | 325ms | 9ms | 1st |
| Unattributable | 282ms | 47ms | 0ms | 1st |
| https://productshotai.app/_next/static/chunks/1274-9f866282c24598b3.js | 196ms | 18ms | 5ms | 1st |
| https://productshotai.app/cdn-cgi/challenge-platform/scripts/jsd/main.js | 133ms | 128ms | 1ms | 1st |
| https://productshotai.app/_next/static/chunks/webpack-87099ceb4a46d92a.js | 87ms | 87ms | 0ms | 1st |
| https://scripts.clarity.ms/0.8.69/clarity.js | 80ms | 67ms | 3ms | 3rd |
DHTTP CachingActionno-store (uncacheable)FIX
private, no-cache, no-store, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
BPage Weight Budget1.2 MB transferred, 105 requestsREVIEW
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
CJS BundlesAction26 scripts, 180 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://accounts.google.com/gsi/client | 97 KB | 72 KB (75%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-EB61P8TMB1 | 168 KB | 69 KB (41%) | ✓ | 3rd |
| https://umami.bestvid.net/recorder.js | 58 KB | 38 KB (67%) | ✓ | 3rd |
| https://productshotai.app/_next/static/chunks/1839-c98fe4086448e41f.js | 5 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/373-f60d03bb8d602460.js | 5 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/4bd1b696-f785427dddbba9fb.js | 54 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/1255-32f0b2a4c4d3a714.js | 44 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/main-app-3f1cb8baf2b06fbe.js | 1 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/6091-30a78ac1d17f693e.js | 13 KB | — | ✓ | 1st |
| https://productshotai.app/_next/static/chunks/176-c399f18851485fd7.js | 4 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
BPage Weight Inventory105 resources · 1.2 MB · 180 KB savings availableREVIEW
~179.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 105 resources | 1.2 MiB | ||||||
AThird-Party Impact34% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization32 images, 0 KB saveablePASS
A+Font Loading2 fonts (74 KB)PASS
Web fonts
2
74 KB total
Render-blocking
0
of 2
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+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall105 requests over 8129msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
umami.bestvid.net umami.bestvid.net | Other | 706ms | 58 KB | 67% | €4/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 80ms | 25 KB | — | €0/mo | Optional |
These scripts may cost more than they're worth
- umami.bestvid.net adds 706ms and costs ~€4/month
umami.bestvid.net takes 706ms 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 umami.bestvid.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
Image Optimization119 images, 1281 KB total, 467 KB wastedINFO
Image Optimization Audit
Total Images
119
Total Size
1281 KB
Oversized
29
Wasted
467 KB