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.
363 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.81 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.60 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.
4.08 s
Page Load Progression
FPage Weight BudgetAction7.7 MB transferred, 89 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
CImage OptimizationAction41 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
CJS Execution CostAction1367ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.supportkori.com/_next/static/chunks/919c0c1244a6a050.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 401ms | 268ms | 3ms | 1st |
| https://www.supportkori.com/ | 392ms | 9ms | 1ms | 1st |
| https://www.supportkori.com/_next/static/chunks/ae915874d34e9414.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 371ms | 107ms | 3ms | 1st |
| Unattributable | 141ms | 4ms | 0ms | 1st |
| https://www.supportkori.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 62ms | 57ms | 0ms | 1st |
CJS BundlesAction23 scripts, 153 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.supportkori.com/_next/static/chunks/abed7821fb19c0f2.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 109 KB | 91 KB (84%) | ✓ | 1st |
| https://connect.facebook.net/en_US/fbevents.js | 108 KB | 38 KB (36%) | ✓ | 3rd |
| https://www.supportkori.com/_next/static/chunks/919c0c1244a6a050.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 70 KB | 24 KB (34%) | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/d96012bcfc98706a.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 1 KB | — | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/0bf60c0dfd8797ff.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 4 KB | — | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/5a5025548a46274f.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 8 KB | — | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/turbopack-0122d89e026a31dd.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 5 KB | — | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/dcf968a0b8a29567.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 16 KB | — | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/0c1c25035f199904.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 9 KB | — | ✓ | 1st |
| https://www.supportkori.com/_next/static/chunks/c87efd6901b46c4e.js?dpl=dpl_4Kqo982yfNyMkqBU863zPiCTAGoQ | 11 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
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction89 resources · 7.7 MB · 153 KB savings availableREVIEW
~152.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 89 resources | 7.7 MiB | ||||||
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Third-Party Impact4% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (117 KB)PASS
Web fonts
3
117 KB total
Render-blocking
0
of 3
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 max-age=0 (≤ 5min) is appropriatePASS
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 Waterfall89 requests over 2496msINFO
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-07-23 — 2026-08-19)
LCP (p75)
2168 ms
81% good
INP (p75)
209 ms
74% good
CLS (p75)
0.140
66% good
FCP (p75)
2167 ms
TTFB (p75)
543 ms
Image Optimization1 images, 3 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
1
Total Size
3 KB