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.
1.80 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.63 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
279 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.094
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.63 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.
8.54 s
Page Load Progression
785 ms
1.6 s
2.4 s
3.1 s
3.9 s
4.7 s
5.5 s
6.3 sFPage Weight BudgetAction54.3 MB transferred, 133 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
DJS Execution CostAction2682ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.zebra.com/br/pt.html | 610ms | 33ms | 2ms | 3rd |
| Unattributable | 525ms | 30ms | 0ms | 3rd |
| https://www.zebra.com/etc.clientlibs/zebra-web/clientlibs/clientlib-rebrand.lc-2bbe809cd3e2a8aa475561783ae28cd9-lc.min.js | 238ms | 143ms | 73ms | 3rd |
| https://www.zebra.com/etc.clientlibs/zebra-web/clientlibs/clientlib-dependencies.lc-3367a958b7a0195880bd0c555080d3b9-lc.min.js | 193ms | 145ms | 20ms | 3rd |
| https://use.typekit.net/lmt3sxe.js | 171ms | 156ms | 4ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/6.37.0/otBannerSdk.js | 126ms | 75ms | 20ms | 3rd |
| https://cdn.evgnet.com/beacon/zebra/engage/scripts/evergage.min.js | 117ms | 105ms | 9ms | 3rd |
| https://assets.adobedtm.com/f4072c74f4f2/b25370a5d269/launch-168524f53052.min.js | 104ms | 83ms | 11ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6HBKMX7V92&l=gtagDataLayer&cx=c>m=4e64k0 | 99ms | 80ms | 18ms | 3rd |
| https://app.gatedcontent.com/scripts/67770621/app.js | 90ms | 64ms | 22ms | 3rd |
Showing top 10 of 16 scripts
FJS BundlesAction37 scripts, 1003 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.zebra.com/etc.clientlibs/zebra-web/clientlibs/clientlib-rebrand.lc-2bbe809cd3e2a8aa475561783ae28cd9-lc.min.js | 557 KB | 461 KB (84%) | ✓ | 3rd |
| https://static.cloud.coveo.com/searchui/v2.10121/1/js/CoveoJsSearch.Lazy.min.js | 211 KB | 101 KB (50%) | ✓ | 3rd |
| https://www.zebra.com/etc.clientlibs/zebra-web/clientlibs/clientlib-dependencies.lc-3367a958b7a0195880bd0c555080d3b9-lc.min.js | 124 KB | 96 KB (77%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-6HBKMX7V92&l=gtagDataLayer&cx=c>m=4e64k0 | 176 KB | 78 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-8221410&l=gtagDataLayer&cx=c>m=4e64k0 | 129 KB | 61 KB (47%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-15056454&l=gtagDataLayer | 130 KB | 54 KB (42%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/6.37.0/otBannerSdk.js | 87 KB | 45 KB (52%) | ✓ | 3rd |
| https://app.gatedcontent.com/scripts/67770621/app.js | 64 KB | 44 KB (68%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 43 KB (45%) | ✓ | 3rd |
| https://connect.facebook.net/signals/config/1367227660441670?v=2.9.303&r=stable&domain=www.zebra.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 | 45 KB | 21 KB (46%) | ✓ | 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 InventoryAction133 resources · 54.3 MB · 1003 KB savings availableFIX
~1003.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 133 resources | 54.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction32 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
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
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 Loading13 fonts (927 KB)PASS
Web fonts
13
927 KB total
Render-blocking
0
of 13
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
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~461 KB and ~922 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall133 requests over 6143msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.zebra.com www.zebra.com | Other | 610ms | 37 KB | — | $3/mo | Costly |
Unattributable Unattributable | Other | 525ms | 0 KB | — | $3/mo | Costly |
www.zebra.com www.zebra.com | Other | 238ms | 557 KB | 84% | $1/mo | Costly |
www.zebra.com www.zebra.com | Other | 193ms | 124 KB | 77% | $1/mo | Optional |
Adobe Fonts use.typekit.net | Font | 171ms | 95 KB | — | $1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 126ms | 87 KB | 52% | $1/mo | Essential |
cdn.evgnet.com cdn.evgnet.com | Other | 117ms | 53 KB | — | $1/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 104ms | 74 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 99ms | 176 KB | 44% | $1/mo | Optional |
app.gatedcontent.com app.gatedcontent.com | Other | 90ms | 64 KB | 68% | $1/mo | Optional |
static.cloud.coveo.com static.cloud.coveo.com | Other | 89ms | 211 KB | 50% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 83ms | 130 KB | 42% | $0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 64ms | 129 KB | 47% | $0/mo | Optional |
app.gatedcontent.com app.gatedcontent.com | Other | 61ms | 64 KB | — | $0/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 60ms | 45 KB | 46% | $0/mo | Optional |
static.cloud.coveo.com static.cloud.coveo.com | Other | 51ms | 12 KB | — | $0/mo | Optional |
These scripts may cost more than they're worth
- www.zebra.com adds 610ms and costs ~$3/month
- Unattributable adds 525ms and costs ~$3/month
- www.zebra.com adds 238ms and costs ~$1/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.zebra.com takes 610ms 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 525ms 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.zebra.com takes 238ms 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
84% of www.zebra.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.zebra.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
52% of OneTrust'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
68% of app.gatedcontent.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