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.
7.29 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
9.11 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
5.96 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.006
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.29 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.
21.22 s
Page Load Progression
FPage Weight BudgetAction14.4 MB transferred, 107 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction12824ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.hikvision.com/etc.clientlibs/hiknow/clientlibs/clientlib-site/dependencies.min.e0e24d46966d0b9d128091e12819a487.js | 7141ms | 666ms | 17ms | 3rd |
| https://www.hikvision.com/en/?C3VK=7cc681 | 1372ms | 74ms | 14ms | 3rd |
| Unattributable | 998ms | 46ms | 0ms | 3rd |
| https://www.hikvision.com/etc.clientlibs/clientlibs/granite/jquery.min.f670cad9b49f6e0179cfb6bd07a99b09.js | 730ms | 571ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-PG3HDW12RB&cx=c>m=4e64k1h2 | 699ms | 621ms | 69ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MSGBK2H | 451ms | 379ms | 63ms | 3rd |
| https://connect.facebook.net/signals/config/579708877049878?v=2.9.303&r=stable&domain=www.hikvision.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168 | 222ms | 152ms | 24ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 186ms | 136ms | 48ms | 3rd |
| https://www.hikvision.com/etc.clientlibs/hiknow/clientlibs/clientlib-before.min.c4689a4019bedcad149e65728ed8aeea.js | 184ms | 112ms | 50ms | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 180ms | 149ms | 28ms | 3rd |
Showing top 10 of 17 scripts
FJS BundlesAction21 scripts, 525 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.hikvision.com/etc.clientlibs/hiknow/components/structure/home-page/clientlibs/dependencies.min.c833cd807d1cc99eb0f420b1e62fb6b5.js | 168 KB | 126 KB (75%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MSGBK2H | 150 KB | 63 KB (42%) | ✓ | 3rd |
| https://www.hikvision.com/etc.clientlibs/hiknow/clientlibs/clientlib-before.min.c4689a4019bedcad149e65728ed8aeea.js | 117 KB | 60 KB (52%) | ✗ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-PG3HDW12RB&cx=c>m=4e64k1h2 | 178 KB | 52 KB (29%) | ✓ | 3rd |
| https://www.hikvision.com/etc.clientlibs/hiknow/components/structure/home-page/clientlibs/components.min.32888f9b7cd653dbc7ec7184ba09bb29.js | 63 KB | 47 KB (77%) | ✗ | 3rd |
| https://www.hikvision.com/etc.clientlibs/hiknow/clientlibs/clientlib-in-page.min.1984d9c443d8688ff9c460eb0280ff8c.js | 57 KB | 44 KB (78%) | ✗ | 3rd |
| https://www.hikvision.com/etc.clientlibs/hiknow/clientlibs/clientlib-base.min.b7dad676def7b140a846330be87d9498.js | 45 KB | 39 KB (88%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 38 KB (67%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 34 KB (35%) | ✓ | 3rd |
| https://www.hikvision.com/etc.clientlibs/hiknow/clientlibs/clientlib-site/dependencies.min.e0e24d46966d0b9d128091e12819a487.js | 39 KB | 23 KB (61%) | ✗ | 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
FPage Weight InventoryAction107 resources · 14.4 MB · 525 KB savings availableFIX
~524.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 107 resources | 14.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization46 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (336 KB)PASS
Web fonts
5
336 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~101 KB and ~202 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints10 hints, 0 missing preconnectsPASS
Current Resource Hints
10 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall107 requests over 4825msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.hikvision.com www.hikvision.com | Other | 7141ms | 39 KB | 61% | ¥881/mo | Costly |
www.hikvision.com www.hikvision.com | Other | 1372ms | 71 KB | — | ¥169/mo | Costly |
Unattributable Unattributable | Other | 998ms | 0 KB | — | ¥123/mo | Costly |
www.hikvision.com www.hikvision.com | Other | 730ms | 41 KB | — | ¥90/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 699ms | 178 KB | 29% | ¥86/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 451ms | 150 KB | 42% | ¥56/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 222ms | 45 KB | — | ¥27/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 186ms | 97 KB | 35% | ¥23/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 184ms | 117 KB | 52% | ¥23/mo | Optional |
Hotjar script.hotjar.com | Session Replay | 180ms | 57 KB | 67% | ¥22/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 148ms | 168 KB | 75% | ¥18/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 135ms | 6 KB | — | ¥17/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 105ms | 45 KB | 88% | ¥13/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 73ms | 61 KB | — | ¥9/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 72ms | 57 KB | 78% | ¥9/mo | Optional |
tag.aticdn.net tag.aticdn.net | Other | 70ms | 27 KB | — | ¥9/mo | Optional |
www.hikvision.com www.hikvision.com | Other | 57ms | 63 KB | 77% | ¥7/mo | Optional |
These scripts may cost more than they're worth
- www.hikvision.com adds 7141ms and costs ~¥881/month
- www.hikvision.com adds 1372ms and costs ~¥169/month
- Unattributable adds 998ms and costs ~¥123/month
- www.hikvision.com adds 730ms and costs ~¥90/month
- Google Tag Manager adds 699ms and costs ~¥86/month
- Google Tag Manager adds 451ms and costs ~¥56/month
- Facebook Pixel adds 222ms and costs ~¥27/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
www.hikvision.com takes 7141ms 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
61% of www.hikvision.com'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
www.hikvision.com takes 1372ms 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 998ms 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
www.hikvision.com takes 730ms 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 699ms 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 451ms 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
Facebook Pixel takes 222ms 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
52% of www.hikvision.com'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
67% of Hotjar'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
75% of www.hikvision.com'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
88% of www.hikvision.com'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
78% of www.hikvision.com'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
77% of www.hikvision.com'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