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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
38
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

1.21 s

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

3.96 s

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

952 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.001

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

11.44 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.

8.97 s

Page Load Progression

4.0 s
8.1 s
12.1 s
16.2 s
20.2 s
24.3 s
28.3 s
32.3 s
Checks
14
5 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
23.2 MB transferred, 573 requests
FIX
23.2 MB transferred, 573 requests
Critical::
Page weighs 33.0 MB (23.2 MB transferred)
Warning::
JavaScript is 4.8 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 4.8 MB
Warning::
Images are 1.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.0 MB
Info::
Fonts are 466 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 466 KB
Warning::
573 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 4.9 g CO2 per page load
23.2 MB / 2.4 MB budget
23.2 MB transferred
573 requests
4.9 g CO2 per page load
Other 8.8 MiB 38%
Other 7.7 MiB 33%
JavaScript 4.8 MiB 21%
Images 1.0 MiB 4%
Fonts 465.9 KiB 2%
CSS 167.3 KiB 1%
HTML 135.5 KiB 1%
Other 84.7 KiB 0%
Other 6.1 KiB 0%
Other 450 B 0%
Other 348 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

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 (23.2 MiB of 23.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
7345ms total JS execution
FIX
7345ms total JS execution
Warning::
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585...: 1410ms CPU time
Warning::
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585...: 867ms CPU time
Warning::
Unattributable: 835ms CPU time
Warning::
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585...: 719ms CPU time
Warning::
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585...: 445ms CPU time
Warning::
Third-party scripts: 7345ms (100% of total)

Main Thread Breakdown

Script Evaluation 56% Other 27% Script Parsing & Compilation 7% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/6546-8d040fa63ef7b49f.js1410ms349ms1ms3rd
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/framework-dbc4bb513a72eaeb.js867ms686ms3ms3rd
Unattributable835ms70ms0ms3rd
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/pages/index-c2aca32e70ba68db.js719ms500ms2ms3rd
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/pages/_app-3e6b26b2aca06c2f.js445ms292ms97ms3rd
https://rivian.com/386ms53ms0ms3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js383ms317ms25ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PZLGGN2336ms266ms60ms3rd
https://www.googletagmanager.com/gtag/js?id=G-ZK75JEL9E3&cx=c&gtm=4e6461h2280ms227ms48ms3rd
https://rivian.com/root/_next/static/chunks/5594-5003c8729c5c7e20.js234ms220ms4ms3rd

Showing top 10 of 20 scripts

F
JS Bundles
Action
126 scripts, 2.9 MB unused
FIX
126 scripts, 2.9 MB unused
Warning::
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585...: 731 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://sierra.chat/-/cdn/36S2kDpTX4v1ufbTnr_vNLgv...: 167 KB unused (74%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 2.9 MB
2933 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/pages/_app-3e6b26b2aca06c2f.js1150 KB731 KB (64%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://sierra.chat/-/cdn/36S2kDpTX4v1ufbTnr_vNLgvnjk.js0 KB167 KB (74%)✓3rd
https://sierra.chat/-/cdn/36S2kDpTX4v1ufbTnr_vNLgvnjk.js224 KB167 KB (74%)✓3rd
https://rivian.com/root/_next/static/chunks/edbf9cd1-2999e1af1adf3667.js130 KB127 KB (98%)✓3rd
https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js257 KB116 KB (45%)✓3rd
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/6491.fbad14ea7130bc3b.js125 KB75 KB (60%)✓3rd
https://rivian.com/.next-b2d3d96a37d81208b9a4cb585d760f002837d16d-2411410260/_next/static/chunks/ea88be26.375858f3cf93f50c.js76 KB66 KB (87%)✓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

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.

B
Image Optimization
38 images, 0 KB saveable
REVIEW
38 images, 0 KB saveable
Info::
All images are well-optimized
38 images 1.0 MB
0 oversized -0 KB
10 legacy format
0 missing dimensions CLS risk
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+
Font Loading
13 fonts (466 KB)
PASS
13 fonts (466 KB)
Info::
13 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

13

466 KB total

Render-blocking

0

of 13

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 4.0 s FCP 1.2 s LCP 4.0 shttps://assets.rivian.com/2md5qhoeajym/1Dv0kej9t7tDsPaJlXKU1J/09735d831d661afd8335a2cf9d36310c/Adventure-Regular.woff2Adventure-Regular.woff2 https://assets.rivian.com/2md5qhoeajym/1Dv0kej9t7tDsPaJlXKU1J/09735d831d661afd8335a2cf9d36310c/Adventure-Regular.woff2 — 33.4 KiB — 0 ms — font-display: swaphttps://assets.rivian.com/2md5qhoeajym/2KUubGptkAVAoZuBkZ01i8/8af6dfe3e22302422e0518934fc86679/Adventure-SemiBold.woff2Adventure-SemiBold.woff2 https://assets.rivian.com/2md5qhoeajym/2KUubGptkAVAoZuBkZ01i8/8af6dfe3e22302422e0518934fc86679/Adventure-SemiBold.woff2 — 32.4 KiB — 0 ms — font-display: swaphttps://assets.rivian.com/2md5qhoeajym/2KUubGptkAVAoZuBkZ01i8/812892ff786ddbd3305d16883d5a200b/Adventure-SemiBold.woff2Adventure-SemiBold.woff2 https://assets.rivian.com/2md5qhoeajym/2KUubGptkAVAoZuBkZ01i8/812892ff786ddbd3305d16883d5a200b/Adventure-SemiBold.woff2 — 32.4 KiB — 0 ms — font-display: swaphttps://assets.rivian.com/2md5qhoeajym/4LzEfmGSeWQppOcmiZuXlv/6445dc40baaa0706c8bb9603ec67e495/AdventureV1-Medium.otfAdventureV1-Medium.otf https://assets.rivian.com/2md5qhoeajym/4LzEfmGSeWQppOcmiZuXlv/6445dc40baaa0706c8bb9603ec67e495/AdventureV1-Medium.otf — 64.1 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/30f30b1f769d3a04-s.p.woff230f30b1f769d3a04-s.p.woff2 https://rivian.com/root/_next/static/media/30f30b1f769d3a04-s.p.woff2 — 35.5 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/330d5f793a65c589-s.p.woff2330d5f793a65c589-s.p.woff2 https://rivian.com/root/_next/static/media/330d5f793a65c589-s.p.woff2 — 32.7 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/5ce4453548831834-s.p.woff25ce4453548831834-s.p.woff2 https://rivian.com/root/_next/static/media/5ce4453548831834-s.p.woff2 — 33.0 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/8df70f690292c43d-s.p.woff28df70f690292c43d-s.p.woff2 https://rivian.com/root/_next/static/media/8df70f690292c43d-s.p.woff2 — 33.3 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/ac2519083dfd2fb4-s.p.woff2ac2519083dfd2fb4-s.p.woff2 https://rivian.com/root/_next/static/media/ac2519083dfd2fb4-s.p.woff2 — 34.5 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/dcf3a16bef731180-s.p.woff2dcf3a16bef731180-s.p.woff2 https://rivian.com/root/_next/static/media/dcf3a16bef731180-s.p.woff2 — 33.7 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/e42172ff1725af38-s.p.woff2e42172ff1725af38-s.p.woff2 https://rivian.com/root/_next/static/media/e42172ff1725af38-s.p.woff2 — 32.2 KiB — 0 ms — font-display: swaphttps://rivian.com/root/_next/static/media/f79e926d052f702c-s.p.woff2f79e926d052f702c-s.p.woff2 https://rivian.com/root/_next/static/media/f79e926d052f702c-s.p.woff2 — 34.6 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 0 ms — font-display: swap
Adventure-Regular.woff2 woff2 swap
Size 33 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Adventure-SemiBold.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Adventure-SemiBold.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
AdventureV1-Medium.otf otf swap
Size 64 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
30f30b1f769d3a04-s.p.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
330d5f793a65c589-s.p.woff2 woff2 swap
Size 33 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
5ce4453548831834-s.p.woff2 woff2 swap
Size 33 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
8df70f690292c43d-s.p.woff2 woff2 swap
Size 33 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ac2519083dfd2fb4-s.p.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
dcf3a16bef731180-s.p.woff2 woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
e42172ff1725af38-s.p.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
f79e926d052f702c-s.p.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
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 ~19 KB and ~38 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
573 requests over 0ms
INFO

Performance analysis not available for this result.

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 7345ms · 2011KB · $98/mo
rivian.com
Other
Costly
Execution 1410ms
Transfer 17 KB
Monthly Cost $19/mo
rivian.com
Other
Costly
Execution 867ms
Transfer 44 KB
Monthly Cost $12/mo
Unattributable
Other
Costly
Execution 835ms
Transfer 0 KB
Monthly Cost $11/mo
rivian.com
Other
Costly
Execution 719ms
Transfer 26 KB
Monthly Cost $10/mo
rivian.com
Other
Costly
Execution 445ms
Transfer 1150 KB
Unused 64%
Monthly Cost $6/mo
rivian.com
Other
Costly
Execution 386ms
Transfer 82 KB
Monthly Cost $5/mo
www.gstatic.com
Other
Costly
Execution 383ms
Transfer 0 KB
Unused 49%
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 336ms
Transfer 0 KB
Unused 27%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 280ms
Transfer 0 KB
Unused 36%
Monthly Cost $4/mo
rivian.com
Other
Costly
Execution 234ms
Transfer 51 KB
Unused 50%
Monthly Cost $3/mo
rivian.com
Other
Costly
Execution 208ms
Transfer 63 KB
Unused 52%
Monthly Cost $3/mo
rivian.com
Other
Optional
Execution 182ms
Transfer 34 KB
Unused 78%
Monthly Cost $2/mo
cdn.ketchjs.com
Other
Optional
Execution 164ms
Transfer 257 KB
Unused 45%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 152ms
Transfer 0 KB
Unused 44%
Monthly Cost $2/mo
rivian.com
Other
Optional
Execution 144ms
Transfer 108 KB
Unused 46%
Monthly Cost $2/mo
rivian.com
Other
Optional
Execution 129ms
Transfer 26 KB
Monthly Cost $2/mo
rivian.com
Other
Optional
Execution 125ms
Transfer 7 KB
Monthly Cost $2/mo
rivian.com
Other
Optional
Execution 121ms
Transfer 20 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 115ms
Transfer 0 KB
Unused 49%
Monthly Cost $2/mo
rivian.com
Other
Optional
Execution 109ms
Transfer 125 KB
Unused 60%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • rivian.com adds 1410ms and costs ~$19/month
  • rivian.com adds 867ms and costs ~$12/month
  • Unattributable adds 835ms and costs ~$11/month
  • rivian.com adds 719ms and costs ~$10/month
  • rivian.com adds 445ms and costs ~$6/month
  • rivian.com adds 386ms and costs ~$5/month
  • www.gstatic.com adds 383ms and costs ~$5/month
  • Google Tag Manager adds 336ms and costs ~$4/month
  • Google Tag Manager adds 280ms and costs ~$4/month
  • rivian.com adds 234ms and costs ~$3/month
  • rivian.com adds 208ms and costs ~$3/month

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

rivian.com takes 1410ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

rivian.com takes 867ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 835ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

rivian.com takes 719ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

rivian.com takes 445ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

64% of rivian.com'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

rivian.com takes 386ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.gstatic.com takes 383ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 336ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 280ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

rivian.com takes 234ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

rivian.com takes 208ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

52% of rivian.com'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

78% of rivian.com'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

60% of rivian.com'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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