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https://nordstrom.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
67
GRADE
D
FIX
1
REVIEW
2
PASS
10
INFO
2

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

Mobile Desktop
100
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
87
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.
54
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.

676 ms

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

716 ms

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

0 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.

676 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

716 ms

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
10 PASS 2 REVIEW 1 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 (276.2 KiB of 276.5 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
B
JS Execution Cost
566ms total JS execution
REVIEW
566ms total JS execution
Warning::
https://www.nordstrom.com/: 494ms CPU time
Info::
Unattributable: 72ms CPU time
Warning::
Third-party scripts: 566ms (100% of total)

Main Thread Breakdown

Script Evaluation 77% Other 14%
ScriptTotalScriptingParse/CompileParty
https://www.nordstrom.com/494ms454ms16ms3rd
Unattributable72ms4ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
276 KB transferred, 9 requests
PASS
276 KB transferred, 9 requests
Info::
Page weighs 454 KB (276 KB transferred)
Info::
9 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
276 KB / 2.4 MB budget
276 KB transferred
9 requests
0.06 g CO2 per page load
HTML 228.3 KiB 83%
Fonts 44.6 KiB 16%
Other 3.4 KiB 1%
Other 245 B 0%
Images 0 B 0%
JavaScript -1 B -0%
0 2.4 MB 4.9 MB
Under budget
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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (45 KB)
PASS
1 fonts (45 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

45 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 500 ms 1.0 s FCP 676 ms LCP 716 msdata:font/woff;base64,d09GRgABAAAAALJCABIAAAABjHAAAQACAACw/AAAAUYAAAJjAAAAAAAAAABHUE9TAACFPAAAKRgAA…AAAAUYAAAJjAAAAAAAAAABH... data:font/woff;base64,d09GRgABAAAAALJCABIAAAABjHAAAQACAACw/AAAAUYAAAJjAAAAAAAAAABHUE9TAACFPAAAKRgAA… — 44.6 KiB — 14 ms — font-display: swap
AAAAUYAAAJjAAAAAAAAAABH... woff swap
Size 45 KB
Load time 14 ms
Start 919 ms
Risk FOUT — text flashes from fallback to web font
  • 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 ~13 KB and ~26 ms

A+
JS Bundles
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
blob:https://www.nordstrom.com/da74c614-c652-40be-9e55-df8ca051663d-0 KB—✓3rd
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
A
Page Weight Inventory
9 resources · 276 KB · 0 KB savings available
PASS
9 resources · 276 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 276 KB
Warning::
8 third-party resources (100% of weight)
9 resources · 276.5 KiB · 8 third-party Within 1MB page-weight target
Document 83% · 228.3 KiB
Font 16% · 44.6 KiB
Image 1% · 3.2 KiB
Other 0% · 494 B
JavaScript -0% · -1 B
A
HTTP Caching
max-age=5 (5 seconds)
PASS
max-age=5 (5 seconds)
Info::
Cache-Control header is set
Got: max-age=5
Info::
Effective TTL: 5 seconds (max-age=5)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=5

DirectiveValueMeaning
max-age5Cache for 5 seconds
Effective TTL: 5 seconds
Network Waterfall
9 requests over 951ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 676 ms LCP 716 mshttps://nordstrom.com// https://nordstrom.com/ — 301 — 249 B — 37 ms — h2https://www.nordstrom.com/www.nordstrom.com/ https://www.nordstrom.com/ — 200 — 136.3 KiB — 220 ms — h2blob:https://www.nordstrom.com/da74c614-c652-40be-9e55-df8ca051663dwww.nordstrom.com/da74c614-c652-40b... blob:https://www.nordstrom.com/da74c614-c652-40be-9e55-df8ca051663d — 200 — -1 B — 62 ms — blobhttps://www.nordstrom.com/favicon.icowww.nordstrom.com/favicon.ico https://www.nordstrom.com/favicon.ico — 200 — 2.5 KiB — 6 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAIElEQVR4AaTIMQ4AAAjCwMb//1llh…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAIElEQVR4AaTIMQ4AAAjCwMb//1llh… — 200 — 0 B — 0 ms — datahttps://www.nordstrom.com/www.nordstrom.com/ https://www.nordstrom.com/ — 200 — 245 B — 167 ms — h2https://siteclosed.nordstrom.com/invitation.htmlsiteclosed.nordstrom.com/invitation... https://siteclosed.nordstrom.com/invitation.html — 200 — 91.9 KiB — 11 ms — h2data:font/woff;base64,d09GRgABAAAAALJCABIAAAABjHAAAQACAACw/AAAAUYAAAJjAAAAAAAAAABHUE9TAACFPAAAKRgAA…data:font/woff;base64,d09GRgABAAAAA... data:font/woff;base64,d09GRgABAAAAALJCABIAAAABjHAAAQACAACw/AAAAUYAAAJjAAAAAAAAAABHUE9TAACFPAAAKRgAA… — 200 — 44.6 KiB — 14 ms — datahttps://siteclosed.nordstrom.com/favicon.icositeclosed.nordstrom.com/favicon.ic... https://siteclosed.nordstrom.com/favicon.ico — 200 — 730 B — 4 ms — h2
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 566ms · 0KB · $8/mo
www.nordstrom.com
Other
Costly
Execution 494ms
Transfer 0 KB
Monthly Cost $7/mo
Unattributable
Other
Optional
Execution 72ms
Transfer 0 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.nordstrom.com adds 494ms and costs ~$7/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

www.nordstrom.com takes 494ms 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

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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