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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
4
REVIEW
2
PASS
7
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
67
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
74
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.20 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

3.18 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

8 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.

3.38 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

520 ms
1.0 s
1.6 s
2.1 s
2.6 s
3.1 s
3.6 s
4.2 s
Checks
15
7 PASS 2 REVIEW 4 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.6 MiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
27 scripts, 388 KB unused
FIX
27 scripts, 388 KB unused
Warning::
https://build.cargo.site/u/e455a0/static/chunks/ch...: 104 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://build.cargo.site/u/e455a0/static/chunks/ch...: 84 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-LM5C...: 69 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KM9...: 62 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://build.cargo.site/u/e455a0/static/chunks/ch...: 48 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 388 KB
388 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://build.cargo.site/u/e455a0/static/chunks/chunk-FVPG55TC.js125 KB104 KB (83%)✓3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-QFLMRDER.js150 KB84 KB (56%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-LM5C32ZS12&cx=c&gtm=4e64h1176 KB69 KB (40%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KM9HDTX122 KB62 KB (51%)✓3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-4ETB22RS.js94 KB48 KB (51%)✓3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-6DZMMV72.js23 KB21 KB (94%)✓3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-MAPOXVQW.js8 KB—✓3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-Q6DDHESK.js2 KB—✓3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-7DFQTRTO.js2 KB—✓3rd
https://build.cargo.site/u/e455a0/index.js1 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

D
Page Weight Inventory
Action
40 resources · 1.6 MB · 388 KB savings available
FIX
40 resources · 1.6 MB · 388 KB savings available
Warning::
Page weight 616 KB over 1MB target
Got: 1.6 MB Expected: ≤ 1 MB
Info::
~388 KB of savings available
Warning::
39 third-party resources (100% of weight)
Info::
2 resources over 200KB
40 resources · 1.6 MiB · 39 third-party 616.3 KiB over 1MB target
JavaScript 47% · 764.0 KiB
Font 23% · 381.8 KiB
Other 20% · 322.4 KiB
Image 6% · 96.3 KiB
CSS 4% · 66.2 KiB
Document 1% · 9.6 KiB

~387.9 KiB of savings available

Remove unused JavaScript: 387.9 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Page Weight Budget
Action
1.6 MB transferred, 40 requests
REVIEW
1.6 MB transferred, 40 requests
Info::
Page weighs 3.9 MB (1.6 MB transferred)
Warning::
JavaScript is 764 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 764 KB
Info::
Fonts are 382 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 382 KB
Info::
40 HTTP requests
Info::
Estimated 0.34 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
40 requests
0.34 g CO2 per page load
JavaScript 764.0 KiB 47%
Fonts 381.8 KiB 23%
Other 323.2 KiB 20%
CSS 66.2 KiB 4%
Images 61.9 KiB 4%
Other 34.6 KiB 2%
HTML 8.4 KiB 1%
Other 215 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A
Image Optimization
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Warning::
https://build.cargo.site/u/e455a0/images/dinamo-gr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 62 KB
0 oversized -0 KB
2 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

A+
JS Execution Cost
382ms total JS execution
PASS
382ms total JS execution
Info::
https://build.cargo.site/u/e455a0/static/chunks/ch...: 128ms CPU time
Info::
Unattributable: 83ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-LM5C...: 67ms CPU time
Info::
https://build.cargo.site/u/e455a0/static/chunks/ch...: 53ms CPU time
Info::
https://build.cargo.site/u/e455a0/static/chunks/ch...: 52ms CPU time
Warning::
Third-party scripts: 382ms (100% of total)

Main Thread Breakdown

Script Evaluation 57% Other 24% Style & Layout 9% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://build.cargo.site/u/e455a0/static/chunks/chunk-FVPG55TC.js128ms82ms0ms3rd
Unattributable83ms9ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-LM5C32ZS12&cx=c&gtm=4e64h167ms54ms13ms3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-4ETB22RS.js53ms50ms0ms3rd
https://build.cargo.site/u/e455a0/static/chunks/chunk-MAPOXVQW.js52ms47ms0ms3rd
A+
Font Loading
1 fonts (382 KB)
PASS
1 fonts (382 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

382 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.2 s LCP 3.2 shttps://static.cargo.site/assets/C3/fonts/diatype-24/CargoDiatypePlusVariable.woff2CargoDiatypePlusVariabl... https://static.cargo.site/assets/C3/fonts/diatype-24/CargoDiatypePlusVariable.woff2 — 381.8 KiB — 19 ms — font-display: swap
CargoDiatypePlusVariabl... woff2 swap
Size 382 KB
Load time 19 ms
Start 703 ms
Risk FOUT — text flashes from fallback to web font
  • 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 ~191 KB and ~382 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
40 requests over 1396ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 2.2 s LCP 3.2 shttps://cargocollective.com// https://cargocollective.com/ — 302 — 167 B — 292 ms — h2https://cargo.site/cargo.site/ https://cargo.site/ — 200 — 8.4 KiB — 310 ms — h2https://build.cargo.site/u/e455a0/css/cargo-static.cssbuild.cargo.site/u/e455a0/css/cargo... https://build.cargo.site/u/e455a0/css/cargo-static.css — 200 — 1.0 KiB — 20 ms — h2https://build.cargo.site/u/e455a0/index.cssbuild.cargo.site/u/e455a0/index.css https://build.cargo.site/u/e455a0/index.css — 200 — 65.2 KiB — 52 ms — h2https://build.cargo.site/u/e455a0/images/dinamo-green.jpgbuild.cargo.site/u/e455a0/images/di... https://build.cargo.site/u/e455a0/images/dinamo-green.jpg — 200 — 61.3 KiB — 22 ms — h2https://build.cargo.site/u/e455a0/index.jsbuild.cargo.site/u/e455a0/index.js https://build.cargo.site/u/e455a0/index.js — 200 — 728 B — 26 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-QFLMRDER.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-QFLMRDER.js — 200 — 149.8 KiB — 67 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-MRW4Z3NQ.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-MRW4Z3NQ.js — 200 — 1.2 KiB — 27 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-HP6MMHVX.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-HP6MMHVX.js — 200 — 5.7 KiB — 22 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-FVPG55TC.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-FVPG55TC.js — 200 — 125.4 KiB — 60 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-HKNTBZRZ.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-HKNTBZRZ.js — 200 — 669 B — 26 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-MAPOXVQW.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-MAPOXVQW.js — 200 — 8.5 KiB — 36 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-NEYOUAQW.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-NEYOUAQW.js — 200 — 1.6 KiB — 26 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-7DFQTRTO.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-7DFQTRTO.js — 200 — 1.9 KiB — 24 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-6DZMMV72.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-6DZMMV72.js — 200 — 22.6 KiB — 51 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-HJGL6F7U.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-HJGL6F7U.js — 200 — 3.8 KiB — 30 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-3R6GNNIW.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-3R6GNNIW.js — 200 — 8.8 KiB — 28 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-GHWWH4VH.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-GHWWH4VH.js — 200 — 2.2 KiB — 36 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-ESOCNCT6.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-ESOCNCT6.js — 200 — 5.1 KiB — 29 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-VY7SD22C.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-VY7SD22C.js — 200 — 1.2 KiB — 31 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-46RNJYIO.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-46RNJYIO.js — 200 — 1.3 KiB — 24 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-CCQWBFV2.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-CCQWBFV2.js — 200 — 1.9 KiB — 34 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-Q6DDHESK.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-Q6DDHESK.js — 200 — 2.5 KiB — 32 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-4ETB22RS.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-4ETB22RS.js — 200 — 94.0 KiB — 56 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-KVFMBSNE.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-KVFMBSNE.js — 200 — 1.8 KiB — 35 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-AZZ6TGRN.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-AZZ6TGRN.js — 200 — 3.8 KiB — 36 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-YVUDCMPI.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-YVUDCMPI.js — 200 — 1.3 KiB — 37 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-KM9HDTXwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-KM9HDTX — 200 — 122.4 KiB — 159 ms — h2https://static.cargo.site/assets/C3/fonts/diatype-24/CargoDiatypePlusVariable.woff2static.cargo.site/assets/C3/fonts/d... https://static.cargo.site/assets/C3/fonts/diatype-24/CargoDiatypePlusVariable.woff2 — 200 — 381.8 KiB — 19 ms — h2https://api.cargo.site/sentry/tunnelapi.cargo.site/sentry/tunnel https://api.cargo.site/sentry/tunnel — 200 — 982 B — 400 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 2.2 s LCP 3.2 shttps://cargocollective.com// https://cargocollective.com/ — 302 — 167 B — 292 ms — h2https://cargo.site/cargo.site/ https://cargo.site/ — 200 — 8.4 KiB — 310 ms — h2https://build.cargo.site/u/e455a0/css/cargo-static.cssbuild.cargo.site/u/e455a0/css/cargo... https://build.cargo.site/u/e455a0/css/cargo-static.css — 200 — 1.0 KiB — 20 ms — h2https://build.cargo.site/u/e455a0/index.cssbuild.cargo.site/u/e455a0/index.css https://build.cargo.site/u/e455a0/index.css — 200 — 65.2 KiB — 52 ms — h2https://build.cargo.site/u/e455a0/images/dinamo-green.jpgbuild.cargo.site/u/e455a0/images/di... https://build.cargo.site/u/e455a0/images/dinamo-green.jpg — 200 — 61.3 KiB — 22 ms — h2https://build.cargo.site/u/e455a0/index.jsbuild.cargo.site/u/e455a0/index.js https://build.cargo.site/u/e455a0/index.js — 200 — 728 B — 26 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-QFLMRDER.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-QFLMRDER.js — 200 — 149.8 KiB — 67 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-MRW4Z3NQ.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-MRW4Z3NQ.js — 200 — 1.2 KiB — 27 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-HP6MMHVX.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-HP6MMHVX.js — 200 — 5.7 KiB — 22 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-FVPG55TC.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-FVPG55TC.js — 200 — 125.4 KiB — 60 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-HKNTBZRZ.jsbuild.cargo.site/u/e455a0/static/ch... https://build.cargo.site/u/e455a0/static/chunks/chunk-HKNTBZRZ.js — 200 — 669 B — 26 ms — h2https://build.cargo.site/u/e455a0/static/chunks/chunk-MAPOXVQW.jsbuild.cargo.site/u/e455a0/static/ch... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 382ms · 404KB · $5/mo
build.cargo.site
Other
Optional
Execution 128ms
Transfer 125 KB
Unused 83%
Monthly Cost $2/mo
Unattributable
Other
Optional
Execution 83ms
Transfer 0 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 67ms
Transfer 176 KB
Unused 40%
Monthly Cost $1/mo
build.cargo.site
Other
Optional
Execution 53ms
Transfer 94 KB
Unused 51%
Monthly Cost $1/mo
build.cargo.site
Other
Optional
Execution 52ms
Transfer 8 KB
Monthly Cost $1/mo

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

83% of build.cargo.site's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

51% of build.cargo.site's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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