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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
4
REVIEW
4
PASS
5
INFO
2

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

Mobile Desktop
71
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
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.
75
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.

897 ms

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

6.62 s

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.

0.056

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

1.87 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.

6.65 s

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
5 PASS 4 REVIEW 4 FIX
F
Page Weight Budget
Action
23.7 MB transferred, 86 requests
FIX
23.7 MB transferred, 86 requests
Critical::
Page weighs 28.5 MB (23.7 MB transferred)
Warning::
Images are 9.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 9.0 MB
Info::
Fonts are 778 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 778 KB
Info::
86 HTTP requests
Info::
Estimated 5.0 g CO2 per page load
23.7 MB / 2.4 MB budget
23.7 MB transferred
86 requests
5.0 g CO2 per page load
Other 13.7 MiB 58%
Images 9.0 MiB 38%
Fonts 778.3 KiB 3%
JavaScript 160.7 KiB 1%
HTML 61.1 KiB 0%
CSS 47.4 KiB 0%
Other 3.0 KiB 0%
Other 1.2 KiB 0%
Other 736 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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 (23.7 MiB of 23.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
86 resources · 23.7 MB · 83 KB savings available
FIX
86 resources · 23.7 MB · 83 KB savings available
Warning::
Page weight 22.7 MB over 1MB target
Got: 23.7 MB Expected: ≤ 1 MB
Info::
~83 KB of savings available
Warning::
85 third-party resources (100% of weight)
Info::
4 resources over 200KB
86 resources · 23.7 MiB · 85 third-party 22.7 MiB over 1MB target
Media 58% · 13.7 MiB
Image 38% · 9.0 MiB
Font 3% · 778.3 KiB
JavaScript 1% · 161.4 KiB
Document 0% · 61.1 KiB
CSS 0% · 47.4 KiB
Other 0% · 2.2 KiB

~83.3 KiB of savings available

Remove unused JavaScript: 83.3 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
Image Optimization
Action
31 images, 0 KB saveable
REVIEW
31 images, 0 KB saveable
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images-na.ssl-images-amazon.com/images/G/0... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/jour... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://m.media-amazon.com/images/G/01/kindle/NavB... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
31 images 9.0 MB
0 oversized -0 KB
23 legacy format
15 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

C
JS Execution Cost
Action
1186ms total JS execution
REVIEW
1186ms total JS execution
Warning::
Unattributable: 541ms CPU time
Warning::
https://alexa.amazon.com/about: 477ms CPU time
Info::
https://m.media-amazon.com/images/I/11zuylp74DL._R...: 169ms CPU time
Warning::
Third-party scripts: 1186ms (100% of total)

Main Thread Breakdown

Other 49% Script Evaluation 27% Style & Layout 14% Rendering 4% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
Unattributable541ms5ms0ms3rd
https://alexa.amazon.com/about477ms137ms18ms3rd
https://m.media-amazon.com/images/I/11zuylp74DL._RC%7C61xJcNKKLXL.js,11Y+5x+kkTL.js,518IfuPC2lL.js,115zbyk371L.js,11GgN1+C7hL.js,01+z+uIeJ-L.js,01VRMV3FBdL.js,21NadQlXUWL.js,01vRf9id2EL.js,11a7qqY8xXL.js,11aZNVRA-EL.js,51C4kaFbiAL.js,11FhdH2HZwL.js,11wb9K3sw0L.js,11BrgrMAHUL.js,11GPhx42StL.js,210X-JWUe-L.js,01Svfxfy8OL.js,61lyy0inY-L.js,01ikBbTAneL.js,316JwWyajNL.js,01qXJuwGmxL.js,01WlsjNmqIL.js,11F929pmpYL.js,31Zn4S+IOkL.js,01rpauTep4L.js,31rqCOnXDNL.js,011FfPwYqHL.js,21P5VvHf-XL.js,013ncka0wXL.js,21kN0q4IA-L.js,01VvIkYCafL.js,11vb6P5C5AL.js,01rpjf4IWYL.js_.js?AUIClients/AmazonUI169ms127ms17ms3rd
B
JS Bundles
15 scripts, 83 KB unused
REVIEW
15 scripts, 83 KB unused
Warning::
https://m.media-amazon.com/images/I/11zuylp74DL._R...: 62 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://m.media-amazon.com/images/I/71KPXWmUoBL.js...: 21 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 83 KB
83 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://m.media-amazon.com/images/I/11zuylp74DL._RC%7C61xJcNKKLXL.js,11Y+5x+kkTL.js,518IfuPC2lL.js,115zbyk371L.js,11GgN1+C7hL.js,01+z+uIeJ-L.js,01VRMV3FBdL.js,21NadQlXUWL.js,01vRf9id2EL.js,11a7qqY8xXL.js,11aZNVRA-EL.js,51C4kaFbiAL.js,11FhdH2HZwL.js,11wb9K3sw0L.js,11BrgrMAHUL.js,11GPhx42StL.js,210X-JWUe-L.js,01Svfxfy8OL.js,61lyy0inY-L.js,01ikBbTAneL.js,316JwWyajNL.js,01qXJuwGmxL.js,01WlsjNmqIL.js,11F929pmpYL.js,31Zn4S+IOkL.js,01rpauTep4L.js,31rqCOnXDNL.js,011FfPwYqHL.js,21P5VvHf-XL.js,013ncka0wXL.js,21kN0q4IA-L.js,01VvIkYCafL.js,11vb6P5C5AL.js,01rpjf4IWYL.js_.js?AUIClients/AmazonUI97 KB62 KB (65%)✓3rd
https://m.media-amazon.com/images/I/71KPXWmUoBL.js?AUIClients/IdentitySSOJsSDK35 KB21 KB (62%)✓3rd
https://m.media-amazon.com/images/I/01pdDwb82LL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIMshopEgressAssets1 KB—✓3rd
https://m.media-amazon.com/images/I/31J+-jfT4VL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIVideoAssets5 KB—✓3rd
https://m.media-amazon.com/images/I/11MxNbfQyvL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIAjaxActionButtonAssets2 KB—✓3rd
https://m.media-amazon.com/images/I/219p3urYuKL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIWlpInjectableAssets2 KB—✓3rd
https://m.media-amazon.com/images/I/21b2FscBj4L.js?AUIClients/EregionWidgetFoundryAssets2 KB—✓3rd
https://m.media-amazon.com/images/I/11GYl-VycLL.js?AUIClients/MarsUtilityAssets2 KB—✓3rd
https://m.media-amazon.com/images/I/01EB0tSU3ZL.js?AUIClients/MarsNavStripeAssets1 KB—✓3rd
https://m.media-amazon.com/images/I/31hBbkGGC6L.js?AUIClients/MarsContentGridAssets4 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

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
22 fonts (778 KB)
PASS
22 fonts (778 KB)
Info::
22 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

22

778 KB total

Render-blocking

0

of 22

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 5.0 s 6.0 s FCP 897 ms LCP 6.6 shttps://m.media-amazon.com/images/S/sash/KFPk-9IF4FqAqY-.woff2KFPk-9IF4FqAqY-.woff2 https://m.media-amazon.com/images/S/sash/KFPk-9IF4FqAqY-.woff2 — 16.8 KiB — 15 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/pDxWAF1pBB0dzGB.woff2pDxWAF1pBB0dzGB.woff2 https://m.media-amazon.com/images/S/sash/pDxWAF1pBB0dzGB.woff2 — 17.0 KiB — 15 ms — font-display: swaphttps://m.media-amazon.com/images/G/01/kindle/mako/features/efw/EmberModernDisplayStd-Bold.woff2EmberModernDisplayStd-B... https://m.media-amazon.com/images/G/01/kindle/mako/features/efw/EmberModernDisplayStd-Bold.woff2 — 76.3 KiB — 16 ms — font-display: swaphttps://m.media-amazon.com/images/G/01/kindle/mako/features/efw/EmberModernDisplayStd-Regular.woff2EmberModernDisplayStd-R... https://m.media-amazon.com/images/G/01/kindle/mako/features/efw/EmberModernDisplayStd-Regular.woff2 — 76.2 KiB — 15 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/Dv1WQ5DdeMS5qP7.woff2Dv1WQ5DdeMS5qP7.woff2 https://m.media-amazon.com/images/S/sash/Dv1WQ5DdeMS5qP7.woff2 — 28.0 KiB — 26 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/VjTR4RqBzY0mUYx.woff2VjTR4RqBzY0mUYx.woff2 https://m.media-amazon.com/images/S/sash/VjTR4RqBzY0mUYx.woff2 — 21.7 KiB — 20 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/WOnTLzkiaEccV7F.woff2WOnTLzkiaEccV7F.woff2 https://m.media-amazon.com/images/S/sash/WOnTLzkiaEccV7F.woff2 — 17.7 KiB — 20 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/2SazJx$EeTHfhMN.woff22SazJx$EeTHfhMN.woff2 https://m.media-amazon.com/images/S/sash/2SazJx$EeTHfhMN.woff2 — 17.8 KiB — 31 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/ozb5-CLHQWI6Soc.woff2ozb5-CLHQWI6Soc.woff2 https://m.media-amazon.com/images/S/sash/ozb5-CLHQWI6Soc.woff2 — 29.3 KiB — 36 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/KwhNPG8Jz-Vz2X7.woff2KwhNPG8Jz-Vz2X7.woff2 https://m.media-amazon.com/images/S/sash/KwhNPG8Jz-Vz2X7.woff2 — 23.4 KiB — 23 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/lZemoC3awOEEzLR.woff2lZemoC3awOEEzLR.woff2 https://m.media-amazon.com/images/S/sash/lZemoC3awOEEzLR.woff2 — 41.0 KiB — 84 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/NvWNxKhmDbgI1lq.woff2NvWNxKhmDbgI1lq.woff2 https://m.media-amazon.com/images/S/sash/NvWNxKhmDbgI1lq.woff2 — 41.9 KiB — 60 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/1Ep1kWVX5g73xrY.woff21Ep1kWVX5g73xrY.woff2 https://m.media-amazon.com/images/S/sash/1Ep1kWVX5g73xrY.woff2 — 40.7 KiB — 115 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/pnZF3$c0rgepEUt.woff2pnZF3$c0rgepEUt.woff2 https://m.media-amazon.com/images/S/sash/pnZF3$c0rgepEUt.woff2 — 41.8 KiB — 117 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/Wdqa3S7nfGc3Naj.woff2Wdqa3S7nfGc3Naj.woff2 https://m.media-amazon.com/images/S/sash/Wdqa3S7nfGc3Naj.woff2 — 41.0 KiB — 116 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/-w6hwcDxlefrOYI.woff2-w6hwcDxlefrOYI.woff2 https://m.media-amazon.com/images/S/sash/-w6hwcDxlefrOYI.woff2 — 42.3 KiB — 116 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/gyrV-mLs7VcgiFC.woff2gyrV-mLs7VcgiFC.woff2 https://m.media-amazon.com/images/S/sash/gyrV-mLs7VcgiFC.woff2 — 33.8 KiB — 107 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/8AuIu4whVB5EMoJ.woff28AuIu4whVB5EMoJ.woff2 https://m.media-amazon.com/images/S/sash/8AuIu4whVB5EMoJ.woff2 — 34.9 KiB — 111 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/MexTn601PAhMvAn.woff2MexTn601PAhMvAn.woff2 https://m.media-amazon.com/images/S/sash/MexTn601PAhMvAn.woff2 — 33.5 KiB — 107 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/rlTCFdyUZFR9mQI.woff2rlTCFdyUZFR9mQI.woff2 https://m.media-amazon.com/images/S/sash/rlTCFdyUZFR9mQI.woff2 — 34.4 KiB — 105 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/ukoYNzKrqDRxhTq.woff2ukoYNzKrqDRxhTq.woff2 https://m.media-amazon.com/images/S/sash/ukoYNzKrqDRxhTq.woff2 — 33.7 KiB — 106 ms — font-display: swaphttps://m.media-amazon.com/images/S/sash/1yLvxs7jafx7AW$.woff21yLvxs7jafx7AW$.woff2 https://m.media-amazon.com/images/S/sash/1yLvxs7jafx7AW$.woff2 — 35.1 KiB — 109 ms — font-display: swap
KFPk-9IF4FqAqY-.woff2 woff2 swap
Size 17 KB
Load time 15 ms
Start 568 ms
Risk FOUT — text flashes from fallback to web font
pDxWAF1pBB0dzGB.woff2 woff2 swap
Size 17 KB
Load time 15 ms
Start 569 ms
Risk FOUT — text flashes from fallback to web font
EmberModernDisplayStd-B... woff2 swap
Size 76 KB
Load time 16 ms
Start 569 ms
Risk FOUT — text flashes from fallback to web font
EmberModernDisplayStd-R... woff2 swap
Size 76 KB
Load time 15 ms
Start 675 ms
Risk FOUT — text flashes from fallback to web font
Dv1WQ5DdeMS5qP7.woff2 woff2 swap
Size 28 KB
Load time 26 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
VjTR4RqBzY0mUYx.woff2 woff2 swap
Size 22 KB
Load time 20 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
WOnTLzkiaEccV7F.woff2 woff2 swap
Size 18 KB
Load time 20 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
2SazJx$EeTHfhMN.woff2 woff2 swap
Size 18 KB
Load time 31 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
ozb5-CLHQWI6Soc.woff2 woff2 swap
Size 29 KB
Load time 36 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
KwhNPG8Jz-Vz2X7.woff2 woff2 swap
Size 23 KB
Load time 23 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
lZemoC3awOEEzLR.woff2 woff2 swap
Size 41 KB
Load time 84 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
NvWNxKhmDbgI1lq.woff2 woff2 swap
Size 42 KB
Load time 60 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
1Ep1kWVX5g73xrY.woff2 woff2 swap
Size 41 KB
Load time 115 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
pnZF3$c0rgepEUt.woff2 woff2 swap
Size 42 KB
Load time 117 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
Wdqa3S7nfGc3Naj.woff2 woff2 swap
Size 41 KB
Load time 116 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
-w6hwcDxlefrOYI.woff2 woff2 swap
Size 42 KB
Load time 116 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
gyrV-mLs7VcgiFC.woff2 woff2 swap
Size 34 KB
Load time 107 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
8AuIu4whVB5EMoJ.woff2 woff2 swap
Size 35 KB
Load time 111 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
MexTn601PAhMvAn.woff2 woff2 swap
Size 34 KB
Load time 107 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
rlTCFdyUZFR9mQI.woff2 woff2 swap
Size 34 KB
Load time 105 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
ukoYNzKrqDRxhTq.woff2 woff2 swap
Size 34 KB
Load time 106 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
1yLvxs7jafx7AW$.woff2 woff2 swap
Size 35 KB
Load time 109 ms
Start 1.6 s
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)
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
86 requests over 1822ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 897 ms LCP 6.6 shttps://alexa.com// https://alexa.com/ — 302 — 257 B — 56 ms — h2https://alexa.amazon.com/homealexa.amazon.com/home https://alexa.amazon.com/home — 302 — 818 B — 112 ms — h2https://alexa.amazon.com/aboutalexa.amazon.com/about https://alexa.amazon.com/about — 200 — 61.1 KiB — 308 ms — h2https://m.media-amazon.com/images/I/21skJF47J6L._RC%7C51Y8Xg9itbL.css_.css?AUIClients/AmazonUIm.media-amazon.com/images/I/21skJF4... https://m.media-amazon.com/images/I/21skJF47J6L._RC%7C51Y8Xg9itbL.css_.css?AUIClients/AmazonUI — 200 — 7.4 KiB — 23 ms — h2https://m.media-amazon.com/images/I/11T9EXq1JNL._RC%7C01cxwTawfML.css,41wxi7MSmOL.css,318xXDa9Z-L.css,21JMC7OC91L.css,01xH+fhFIJL.css,01EJgRrSvHL.css,413Vvv3GONL.css,1170nDgl0uL.css,01Rw4F+QU6L.css,11NeGmEx+fL.css,01LmAy9LJTL.css,01IdKcBuAdL.css,01iHqjS7YfL.css,01eVBHHaY+L.css,21D3IemrALL.css,11pDJV08stL.css,51yqRfvysvL.css,01HWrzt-WgL.css,01XPHJk60-L.css,11aX6hlPzjL.css,01GAxF7K5tL.css,01ZM-s8Z3xL.css,21gEzBqpmtL.css,11CFYS0t4PL.css,21TxBPhrLyL.css,21Dt9D2TuML.css,31GD5I7tbCL.css,111h7n9dRnL.css,31Qk3MvcMIL.css,11PDZ29p-PL.css,11kbPm9N5xL.css,215WpAjwzoL.css,11sUwulETuL.css,114aTS6SjML.css,01xFKTPySiL.css,21GcfcmbahL.css,21OD8FuBraL.css,11XozyxiH7L.css,21n1oEPZnHL.css,11HVvPbE6JL.css,119Cktja74L.css,11PMguLK6gL.css,01890+Vwk8L.css,11sjvwOAToL.css,01qiwJ7qDfL.css,21AS3Iv3HQL.css,016mfgi+D2L.css,01VinDhK+DL.css,31un+UKeIeL.css,21msrr4h2yL.css,013-xYw+SRL.css_.css?AUIClients/AmazonUIm.media-amazon.com/images/I/11T9EXq... https://m.media-amazon.com/images/I/11T9EXq1JNL._RC%7C01cxwTawfML.css,41wxi7MSmOL.css,318xXDa9Z-L.css,21JMC7OC91L.css,01xH+fhFIJL.css,01EJgRrSvHL.css,413Vvv3GONL.css,1170nDgl0uL.css,01Rw4F+QU6L.css,11NeGmEx+fL.css,01LmAy9LJTL.css,01IdKcBuAdL.css,01iHqjS7YfL.css,01eVBHHaY+L.css,21D3IemrALL.css,11pDJV08stL.css,51yqRfvysvL.css,01HWrzt-WgL.css,01XPHJk60-L.css,11aX6hlPzjL.css,01GAxF7K5tL.css,01ZM-s8Z3xL.css,21gEzBqpmtL.css,11CFYS0t4PL.css,21TxBPhrLyL.css,21Dt9D2TuML.css,31GD5I7tbCL.css,111h7n9dRnL.css,31Qk3MvcMIL.css,11PDZ29p-PL.css,11kbPm9N5xL.css,215WpAjwzoL.css,11sUwulETuL.css,114aTS6SjML.css,01xFKTPySiL.css,21GcfcmbahL.css,21OD8FuBraL.css,11XozyxiH7L.css,21n1oEPZnHL.css,11HVvPbE6JL.css,119Cktja74L.css,11PMguLK6gL.css,01890+Vwk8L.css,11sjvwOAToL.css,01qiwJ7qDfL.css,21AS3Iv3HQL.css,016mfgi+D2L.css,01VinDhK+DL.css,31un+UKeIeL.css,21msrr4h2yL.css,013-xYw+SRL.css_.css?AUIClients/AmazonUI — 200 — 28.8 KiB — 13 ms — h2https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fstaticb%26id%3DGCVYJ9KPNQ2FWJW25ZS5:0fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fstaticb%26id%3DGCVYJ9KPNQ2FWJW25ZS5:0 — 200 — 150 B — 212 ms — h2https://m.media-amazon.com/images/G/01/Metis/AmazonLogoTextAndSmile.pngm.media-amazon.com/images/G/01/Meti... https://m.media-amazon.com/images/G/01/Metis/AmazonLogoTextAndSmile.png — 200 — 76.5 KiB — 100 ms — h2https://m.media-amazon.com/images/I/11OUtXcy-cL.css?AUIClients/MarsNavStripeAssetsm.media-amazon.com/images/I/11OUtXc... https://m.media-amazon.com/images/I/11OUtXcy-cL.css?AUIClients/MarsNavStripeAssets — 200 — 1.7 KiB — 19 ms — h2https://m.media-amazon.com/images/G/01/kindle/NavBar2025/echo/2025-03/56/small/alexa_logo.pngm.media-amazon.com/images/G/01/kind... https://m.media-amazon.com/images/G/01/kindle/NavBar2025/echo/2025-03/56/small/alexa_logo.png — 200 — 4.5 KiB — 21 ms — h2https://m.media-amazon.com/images/I/21q-5RE8DOL.css?AUIClients/EregionWidgetFoundryAssetsm.media-amazon.com/images/I/21q-5RE... https://m.media-amazon.com/images/I/21q-5RE8DOL.css?AUIClients/EregionWidgetFoundryAssets — 200 — 2.0 KiB — 23 ms — h2https://m.media-amazon.com/images/I/51fgkMIM4NL.css?AUIClients/CentaurusUIMarkupAssets-CentaurusUISemanticTokensAssetsm.media-amazon.com/images/I/51fgkMI... https://m.media-amazon.com/images/I/51fgkMIM4NL.css?AUIClients/CentaurusUIMarkupAssets-CentaurusUISemanticTokensAssets — 200 — 4.0 KiB — 25 ms — h2https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/ZWM4OTIxOWMtm.media-amazon.com/images/G/01/kind... https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/ZWM4OTIxOWMt — 200 — 6.6 MiB — 355 ms — h2https://m.media-amazon.com/images/I/31L9k0vAPVL.css?AUIClients/MarsContentGridAssetsm.media-amazon.com/images/I/31L9k0v... https://m.media-amazon.com/images/I/31L9k0vAPVL.css?AUIClients/MarsContentGridAssets — 200 — 2.3 KiB — 19 ms — h2https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/YTNiODY2MWEtm.media-amazon.com/images/G/01/kind... https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/YTNiODY2MWEt — 200 — 5.0 KiB — 28 ms — h2https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/ZWQ0MjVjOWQtm.media-amazon.com/images/G/01/kind... https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/ZWQ0MjVjOWQt — 200 — 11.4 KiB — 30 ms — h2https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/MGE3YzAyOWQtm.media-amazon.com/images/G/01/kind... https://m.media-amazon.com/images/G/01/kindle/journeys/ER43xULJRY0uIKEb/MGE3YzAyOWQt — 200 — 7.0 KiB — 45 ms — h2https://m.media-amazon.com/images/I/11zuylp74DL._RC%7C61xJcNKKLXL.js,11Y+5x+kkTL.js,518IfuPC2lL.js,115zbyk371L.js,11GgN1+C7hL.js,01+z+uIeJ-L.js,01VRMV3FBdL.js,21NadQlXUWL.js,01vRf9id2EL.js,11a7qqY8xXL.js,11aZNVRA-EL.js,51C4kaFbiAL.js,11FhdH2HZwL.js,11wb9K3sw0L.js,11BrgrMAHUL.js,11GPhx42StL.js,210X-JWUe-L.js,01Svfxfy8OL.js,61lyy0inY-L.js,01ikBbTAneL.js,316JwWyajNL.js,01qXJuwGmxL.js,01WlsjNmqIL.js,11F929pmpYL.js,31Zn4S+IOkL.js,01rpauTep4L.js,31rqCOnXDNL.js,011FfPwYqHL.js,21P5VvHf-XL.js,013ncka0wXL.js,21kN0q4IA-L.js,01VvIkYCafL.js,11vb6P5C5AL.js,01rpjf4IWYL.js_.js?AUIClients/AmazonUIm.media-amazon.com/images/I/11zuylp... https://m.media-amazon.com/images/I/11zuylp74DL._RC%7C61xJcNKKLXL.js,11Y+5x+kkTL.js,518IfuPC2lL.js,115zbyk371L.js,11GgN1+C7hL.js,01+z+uIeJ-L.js,01VRMV3FBdL.js,21NadQlXUWL.js,01vRf9id2EL.js,11a7qqY8xXL.js,11aZNVRA-EL.js,51C4kaFbiAL.js,11FhdH2HZwL.js,11wb9K3sw0L.js,11BrgrMAHUL.js,11GPhx42StL.js,210X-JWUe-L.js,01Svfxfy8OL.js,61lyy0inY-L.js,01ikBbTAneL.js,316JwWyajNL.js,01qXJuwGmxL.js,01WlsjNmqIL.js,11F929pmpYL.js,31Zn4S+IOkL.js,01rpauTep4L.js,31rqCOnXDNL.js,011FfPwYqHL.js,21P5VvHf-XL.js,013ncka0wXL.js,21kN0q4IA-L.js,01VvIkYCafL.js,11vb6P5C5AL.js,01rpjf4IWYL.js_.js?AUIClients/AmazonUI — 200 — 96.7 KiB — 36 ms — h3https://m.media-amazon.com/images/I/01EB0tSU3ZL.js?AUIClients/MarsNavStripeAssetsm.media-amazon.com/images/I/01EB0tS... https://m.media-amazon.com/images/I/01EB0tSU3ZL.js?AUIClients/MarsNavStripeAssets — 200 — 1.3 KiB — 16 ms — h3https://m.media-amazon.com/images/I/21b2FscBj4L.js?AUIClients/EregionWidgetFoundryAssetsm.media-amazon.com/images/I/21b2Fsc... https://m.media-amazon.com/images/I/21b2FscBj4L.js?AUIClients/EregionWidgetFoundryAssets — 200 — 2.4 KiB — 27 ms — h3https://m.media-amazon.com/images/I/31J+-jfT4VL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIVideoAssetsm.media-amazon.com/images/I/31J+-jf... https://m.media-amazon.com/images/I/31J+-jfT4VL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIVideoAssets — 200 — 4.6 KiB — 31 ms — h3https://m.media-amazon.com/images/I/11MxNbfQyvL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIAjaxActionButtonAssetsm.media-amazon.com/images/I/11MxNbf... https://m.media-amazon.com/images/I/11MxNbfQyvL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIAjaxActionButtonAssets — 200 — 1.9 KiB — 31 ms — h3https://m.media-amazon.com/images/I/219p3urYuKL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIWlpInjectableAssetsm.media-amazon.com/images/I/219p3ur... https://m.media-amazon.com/images/I/219p3urYuKL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIWlpInjectableAssets — 200 — 2.5 KiB — 31 ms — h3https://m.media-amazon.com/images/I/01pdDwb82LL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIMshopEgressAssetsm.media-amazon.com/images/I/01pdDwb... https://m.media-amazon.com/images/I/01pdDwb82LL.js?AUIClients/CentaurusUIMarkupAssets-CentaurusUIMshopEgressAssets — 200 — 1.5 KiB — 32 ms — h3https://m.media-amazon.com/images/I/11GYl-VycLL.js?AUIClients/MarsUtilityAssetsm.media-amazon.com/images/I/11GYl-V... https://m.media-amazon.com/images/I/11GYl-VycLL.js?AUIClients/MarsUtilityAssets — 200 — 1.9 KiB — 31 ms — h3https://m.media-amazon.com/images/I/71KPXWmUoBL.js?AUIClients/IdentitySSOJsSDKm.media-amazon.com/images/I/71KPXWm... https://m.media-amazon.com/images/I/71KPXWmUoBL.js?AUIClients/IdentitySSOJsSDK — 200 — 34.6 KiB — 34 ms — h3https://m.media-amazon.com/images/I/31hBbkGGC6L.js?AUIClients/MarsContentGridAssetsm.media-amazon.com/images/I/31hBbkG... https://m.media-amazon.com/images/I/31hBbkGGC6L.js?AUIClients/MarsContentGridAssets — 200 — 4.3 KiB — 28 ms — h3data:image/svg+xml;utf8,<svg viewBox='0 0 1090 106' xmlns='http://www.w3.org/2000/svg'><rect fill='…www.w3.org/2000/svg'><rect fill='... data:image/svg+xml;utf8,<svg viewBox='0 0 1090 106' xmlns='http://www.w3.org/2000/svg'><rect fill='… — 200 — 0 B — 0 ms — datahttps://m.media-amazon.com/images/S/sash/KFPk-9IF4FqAqY-.woff2m.media-amazon.com/images/S/sash/KF... https://m.media-amazon.com/images/S/sash/KFPk-9IF4FqAqY-.woff2 — 200 — 16.8 KiB — 15 ms — h3https://m.media-amazon.com/images/S/sash/pDxWAF1pBB0dzGB.woff2m.media-amazon.com/images/S/sash/pD... https://m.media-amazon.com/images/S/sash/pDxWAF1pBB0dzGB.woff2 — 200 — 17.0 KiB — 15 ms — h3https://m.media-amazon.com/images/G/01/kindle/mako/features/efw/EmberModernDisplayStd-Bold.woff2m.media-amazon.com/images/G/01/kind... https://m.media-amazon.com/images/G/01/kindle/mako/features/efw/EmberModernDisplayStd-Bold.woff2 — 200 — 76.3 KiB — 16 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 897 ms LCP 6.6 shttps://alexa.com// https://alexa.com/ — 302 — 257 B — 56 ms — h2https://alexa.amazon.com/homealexa.amazon.com/home https://alexa.amazon.com/home — 302 — 818 B — 112 ms — h2https://alexa.amazon.com/aboutalexa.amazon.com/about https://alexa.amazon.com/about — 200 — 61.1 KiB — 308 ms — h2https://m.media-amazon.com/images/I/21skJF47J6L._RC%7C51Y8Xg9itbL.css_.css?AUIClients/AmazonUIm.media-amazon.com/images/I/21skJF4... https://m.media-amazon.com/images/I/21skJF47J6L._RC%7C51Y8Xg9itbL.css_.css?AUIClients/AmazonUI — 200 — 7.4 KiB — 23 ms — h2https://m.media-amazon.com/images/I/11T9EXq1JNL._RC%7C01cxwTawfML.css,41wxi7MSmOL.css,318xXDa9Z-L.css,21JMC7OC91L.css,01xH+fhFIJL.css,01EJgRrSvHL.css,413Vvv3GONL.css,1170nDgl0uL.css,01Rw4F+QU6L.css,11NeGmEx+fL.css,01LmAy9LJTL.css,01IdKcBuAdL.css,01iHqjS7YfL.css,01eVBHHaY+L.css,21D3IemrALL.css,11pDJV08stL.css,51yqRfvysvL.css,01HWrzt-WgL.css,01XPHJk60-L.css,11aX6hlPzjL.css,01GAxF7K5tL.css,01ZM-s8Z3xL.css,21gEzBqpmtL.css,11CFYS0t4PL.css,21TxBPhrLyL.css,21Dt9D2TuML.css,31GD5I7tbCL.css,111h7n9dRnL.css,31Qk3MvcMIL.css,11PDZ29p-PL.css,11kbPm9N5xL.css,215WpAjwzoL.css,11sUwulETuL.css,114aTS6SjML.css,01xFKTPySiL.css,21GcfcmbahL.css,21OD8FuBraL.css,11XozyxiH7L.css,21n1oEPZnHL.css,11HVvPbE6JL.css,119Cktja74L.css,11PMguLK6gL.css,01890+Vwk8L.css,11sjvwOAToL.css,01qiwJ7qDfL.css,21AS3Iv3HQL.css,016mfgi+D2L.css,01VinDhK+DL.css,31un+UKeIeL.css,21msrr4h2yL.css,013-xYw+SRL.css_.css?AUIClients/AmazonUIm.media-amazon.com/images/I/11T9EXq... https://m.media-amazon.com/images/I/11T9EXq1JNL._RC%7C01cxwTawfML.css,41wxi7MSmOL.css,318xXDa9Z-L.css,21JMC7OC91L.css,01xH+fhFIJL.css,01EJgRrSvHL.css,413Vvv3GONL.css,1170nDgl0uL.css,01Rw4F+QU6L.css,11NeGmEx+fL.css,01LmAy9LJTL.css,01IdKcBuAdL.css,01iHqjS7YfL.css,01eVBHHaY+L.css,21D3IemrALL.css,11pDJV08stL.css,51yqRfvysvL.css,01HWrzt-WgL.css,01XPHJk60-L.css,11aX6hlPzjL.css,01GAxF7K5tL.css,01ZM-s8Z3xL.css,21gEzBqpmtL.css,11CFYS0t4PL.css,21TxBPhrLyL.css,21Dt9D2TuML.css,31GD5I7tbCL.css,111h7n9dRnL.css,31Qk3MvcMIL.css,11PDZ29p-PL.css,11kbPm9N5xL.css,215WpAjwzoL.css,11sUwulETuL.css,114aTS6SjML.css,01xFKTPySiL.css,21GcfcmbahL.css,21OD8FuBraL.css,11XozyxiH7L.css,21n1oEPZnHL.css,11HVvPbE6JL.css,119Cktja74L.css,11PMguLK6gL.css,01890+Vwk8L.css,11sjvwOAToL.css,01qiwJ7qDfL.css,21AS3Iv3HQL.css,016mfgi+D2L.css,01VinDhK+DL.css,31un+UKeIeL.css,21msrr4h2yL.css,013-xYw+SRL.css_.css?AUIClients/AmazonUI — 200 — 28.8 KiB — 13 ms — h2https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fstaticb%26id%3DGCVYJ9KPNQ2FWJW25ZS5:0fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fstaticb%26id%3DGCVYJ9KPNQ2FWJW25ZS5:0 — 200 — 150 B — 212 ms — h2https://m.media-amazon.com/images/G/01/Metis/AmazonLogoTextAndSmile.pngm.media-amazon.com/images/G/01/Meti... https://m.media-amazon.com/images/G/01/Metis/AmazonLogoTextAndSmile.png — 200 — 76.5 KiB — 100 ms — h2https://m.media-amazon.com/images/I/11OUtXcy-cL.css?AUIClients/MarsNavStripeAssetsm.media-amazon.com/images/I/11OUtXc... https://m.media-amazon.com/images/I/11OUtXcy-cL.css?AUIClients/MarsNavStripeAssets — 200 — 1.7 KiB — 19 ms — h2https://m.media-amazon.com/images/G/01/kindle/NavBar2025/echo/2025-03/56/small/alexa_logo.pngm.media-amazon.com/images/G/01/kind... 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h2https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fld%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26sw%3D800%26sh%3D600%26vw%3D1350%26vh%3D940%26m%3D1%26sc%3DGCVYJ9KPNQ2FWJW25ZS5%26ue%3D3%26bb%3D83%26be%3D480%26fp%3D163%26fcp%3D163%26pc%3D1120%26tc%3D-373%26na_%3D-373%26ul_%3D-1776803334624%26_ul%3D-1776803334624%26rd_%3D-1776803334624%26_rd%3D-1776803334624%26fe_%3D-203%26lk_%3D-203%26_lk%3D-203%26co_%3D-203%26_co%3D-203%26sc_%3D-1776803334624%26rq_%3D-202%26rs_%3D-15%26_rs%3D106%26dl_%3D-7%26di_%3D523%26de_%3D523%26_de%3D524%26_dc%3D1120%26ld_%3D1120%26_ld%3D-1776803334624%26ntd%3D0%26ty%3D0%26rc%3D0%26hob%3D2%26hoe%3D4%26ld%3D1121%26t%3D1776803335745%26ctb%3D1%26rt%3D__ld%3A44-13-7-17-3-9-1%26ec%3D1%26ecf%3D0%26csmtags%3Daui%7Caui%3Aaui_build_date%3A3.26.3-2026-04-07%7Cfls-na-amazon-com%7Cadblk_no%7Caui%3Acss%3Anetwork%7Caui%3Acss%3Acache%7Caui%3Ajs%3Anetwork%26viz%3Dvisible%3A3%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:1125fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fld%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26sw%3D800%26sh%3D600%26vw%3D1350%26vh%3D940%26m%3D1%26sc%3DGCVYJ9KPNQ2FWJW25ZS5%26ue%3D3%26bb%3D83%26be%3D480%26fp%3D163%26fcp%3D163%26pc%3D1120%26tc%3D-373%26na_%3D-373%26ul_%3D-1776803334624%26_ul%3D-1776803334624%26rd_%3D-1776803334624%26_rd%3D-1776803334624%26fe_%3D-203%26lk_%3D-203%26_lk%3D-203%26co_%3D-203%26_co%3D-203%26sc_%3D-1776803334624%26rq_%3D-202%26rs_%3D-15%26_rs%3D106%26dl_%3D-7%26di_%3D523%26de_%3D523%26_de%3D524%26_dc%3D1120%26ld_%3D1120%26_ld%3D-1776803334624%26ntd%3D0%26ty%3D0%26rc%3D0%26hob%3D2%26hoe%3D4%26ld%3D1121%26t%3D1776803335745%26ctb%3D1%26rt%3D__ld%3A44-13-7-17-3-9-1%26ec%3D1%26ecf%3D0%26csmtags%3Daui%7Caui%3Aaui_build_date%3A3.26.3-2026-04-07%7Cfls-na-amazon-com%7Cadblk_no%7Caui%3Acss%3Anetwork%7Caui%3Acss%3Acache%7Caui%3Ajs%3Anetwork%26viz%3Dvisible%3A3%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:1125 — 200 — 149 B — 75 ms — h2https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fld%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26sc0%3DcsmCELLSframework%26bb0%3D489%26pc0%3D491%26ld0%3D491%26t0%3D1776803335115%26sc1%3DcsmCELLSpdm%26bb1%3D491%26pc1%3D492%26ld1%3D492%26t1%3D1776803335116%26sc2%3DcsmCELLSvpm%26bb2%3D492%26pc2%3D492%26ld2%3D492%26t2%3D1776803335116%26sc3%3DcsmCELLSfem%26bb3%3D493%26pc3%3D493%26ld3%3D493%26t3%3D1776803335117%26ctb%3D1:1125fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fld%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26sc0%3DcsmCELLSframework%26bb0%3D489%26pc0%3D491%26ld0%3D491%26t0%3D1776803335115%26sc1%3DcsmCELLSpdm%26bb1%3D491%26pc1%3D492%26ld1%3D492%26t1%3D1776803335116%26sc2%3DcsmCELLSvpm%26bb2%3D492%26pc2%3D492%26ld2%3D492%26t2%3D1776803335116%26sc3%3DcsmCELLSfem%26bb3%3D493%26pc3%3D493%26ld3%3D493%26t3%3D1776803335117%26ctb%3D1:1125 — 200 — 149 B — 71 ms — h2https://unagi.amazon.com/1/events/com.amazon.csm.csa.produnagi.amazon.com/1/events/com.amazo... https://unagi.amazon.com/1/events/com.amazon.csm.csa.prod — 200 — 596 B — 314 ms — http/1.1https://unagi.amazon.com/1/events/com.amazon.csm.customsg.produnagi.amazon.com/1/events/com.amazo... https://unagi.amazon.com/1/events/com.amazon.csm.customsg.prod — 200 — 596 B — 235 ms — http/1.1https://images-na.ssl-images-amazon.com/images/I/215h87l68bL.jsimages-na.ssl-images-amazon.com/ima... https://images-na.ssl-images-amazon.com/images/I/215h87l68bL.js — 200 — 3.7 KiB — 102 ms — h3https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Alcp%26lcp%3D627%26pc%3D1148%26at%3D1148%26t%3D1776803335772%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:1148fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Alcp%26lcp%3D627%26pc%3D1148%26at%3D1148%26t%3D1776803335772%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:1148 — 200 — 149 B — 71 ms — h2https://m.media-amazon.com/images/S/sash/Dv1WQ5DdeMS5qP7.woff2m.media-amazon.com/images/S/sash/Dv... https://m.media-amazon.com/images/S/sash/Dv1WQ5DdeMS5qP7.woff2 — 200 — 28.0 KiB — 26 ms — h3https://m.media-amazon.com/images/S/sash/VjTR4RqBzY0mUYx.woff2m.media-amazon.com/images/S/sash/Vj... https://m.media-amazon.com/images/S/sash/VjTR4RqBzY0mUYx.woff2 — 200 — 21.7 KiB — 20 ms — h3https://m.media-amazon.com/images/S/sash/WOnTLzkiaEccV7F.woff2m.media-amazon.com/images/S/sash/WO... https://m.media-amazon.com/images/S/sash/WOnTLzkiaEccV7F.woff2 — 200 — 17.7 KiB — 20 ms — h3https://m.media-amazon.com/images/S/sash/2SazJx$EeTHfhMN.woff2m.media-amazon.com/images/S/sash/2S... https://m.media-amazon.com/images/S/sash/2SazJx$EeTHfhMN.woff2 — 200 — 17.8 KiB — 31 ms — h3https://m.media-amazon.com/images/S/sash/ozb5-CLHQWI6Soc.woff2m.media-amazon.com/images/S/sash/oz... https://m.media-amazon.com/images/S/sash/ozb5-CLHQWI6Soc.woff2 — 200 — 29.3 KiB — 36 ms — h3https://m.media-amazon.com/images/S/sash/KwhNPG8Jz-Vz2X7.woff2m.media-amazon.com/images/S/sash/Kw... https://m.media-amazon.com/images/S/sash/KwhNPG8Jz-Vz2X7.woff2 — 200 — 23.4 KiB — 23 ms — h3https://m.media-amazon.com/images/S/sash/lZemoC3awOEEzLR.woff2m.media-amazon.com/images/S/sash/lZ... https://m.media-amazon.com/images/S/sash/lZemoC3awOEEzLR.woff2 — 200 — 41.0 KiB — 84 ms — h3https://m.media-amazon.com/images/S/sash/NvWNxKhmDbgI1lq.woff2m.media-amazon.com/images/S/sash/Nv... https://m.media-amazon.com/images/S/sash/NvWNxKhmDbgI1lq.woff2 — 200 — 41.9 KiB — 60 ms — h3https://m.media-amazon.com/images/S/sash/1Ep1kWVX5g73xrY.woff2m.media-amazon.com/images/S/sash/1E... https://m.media-amazon.com/images/S/sash/1Ep1kWVX5g73xrY.woff2 — 200 — 40.7 KiB — 115 ms — h3https://m.media-amazon.com/images/S/sash/pnZF3$c0rgepEUt.woff2m.media-amazon.com/images/S/sash/pn... https://m.media-amazon.com/images/S/sash/pnZF3$c0rgepEUt.woff2 — 200 — 41.8 KiB — 117 ms — h3https://m.media-amazon.com/images/S/sash/Wdqa3S7nfGc3Naj.woff2m.media-amazon.com/images/S/sash/Wd... https://m.media-amazon.com/images/S/sash/Wdqa3S7nfGc3Naj.woff2 — 200 — 41.0 KiB — 116 ms — h3https://m.media-amazon.com/images/S/sash/-w6hwcDxlefrOYI.woff2m.media-amazon.com/images/S/sash/-w... https://m.media-amazon.com/images/S/sash/-w6hwcDxlefrOYI.woff2 — 200 — 42.3 KiB — 116 ms — h3https://m.media-amazon.com/images/S/sash/gyrV-mLs7VcgiFC.woff2m.media-amazon.com/images/S/sash/gy... https://m.media-amazon.com/images/S/sash/gyrV-mLs7VcgiFC.woff2 — 200 — 33.8 KiB — 107 ms — h3https://m.media-amazon.com/images/S/sash/8AuIu4whVB5EMoJ.woff2m.media-amazon.com/images/S/sash/8A... https://m.media-amazon.com/images/S/sash/8AuIu4whVB5EMoJ.woff2 — 200 — 34.9 KiB — 111 ms — h3https://m.media-amazon.com/images/S/sash/MexTn601PAhMvAn.woff2m.media-amazon.com/images/S/sash/Me... https://m.media-amazon.com/images/S/sash/MexTn601PAhMvAn.woff2 — 200 — 33.5 KiB — 107 ms — h3https://m.media-amazon.com/images/G/01/Metis/alexa-wordmark.pngm.media-amazon.com/images/G/01/Meti... https://m.media-amazon.com/images/G/01/Metis/alexa-wordmark.png — 200 — 2.0 KiB — 93 ms — h3https://m.media-amazon.com/images/S/sash/rlTCFdyUZFR9mQI.woff2m.media-amazon.com/images/S/sash/rl... https://m.media-amazon.com/images/S/sash/rlTCFdyUZFR9mQI.woff2 — 200 — 34.4 KiB — 105 ms — h3https://m.media-amazon.com/images/S/sash/ukoYNzKrqDRxhTq.woff2m.media-amazon.com/images/S/sash/uk... https://m.media-amazon.com/images/S/sash/ukoYNzKrqDRxhTq.woff2 — 200 — 33.7 KiB — 106 ms — h3https://m.media-amazon.com/images/S/sash/1yLvxs7jafx7AW$.woff2m.media-amazon.com/images/S/sash/1y... https://m.media-amazon.com/images/S/sash/1yLvxs7jafx7AW$.woff2 — 200 — 35.1 KiB — 109 ms — h3https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Avl50%26vl50%3D406%26pc%3D3632%26at%3D3632%26t%3D1776803338256%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:3632fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Avl50%26vl50%3D406%26pc%3D3632%26at%3D3632%26t%3D1776803338256%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:3632 — -1 — 0 B — 0 ms — https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Avl90%26vl90%3D406%26pc%3D3633%26at%3D3633%26t%3D1776803338257%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:3632fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Avl90%26vl90%3D406%26pc%3D3633%26at%3D3633%26t%3D1776803338257%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:3632 — -1 — 0 B — 0 ms — https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Avl100%26vl100%3D818%26pc%3D3634%26at%3D3634%26t%3D1776803338258%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:3633fls-na.amazon.com/1/batch/1/OP/ATVP... https://fls-na.amazon.com/1/batch/1/OP/ATVPDKIKX0DER:140-8952319-4220714:GCVYJ9KPNQ2FWJW25ZS5$uedata=s:%2Fuedata%2Fuedata%3Fat%26v%3D0.343361.0%26id%3DGCVYJ9KPNQ2FWJW25ZS5%26m%3D1%26sc%3Dcsa%3Avl100%26vl100%3D818%26pc%3D3634%26at%3D3634%26t%3D1776803338258%26pty%3DMetis%26spty%3DPreSigninPage%26pti%3Dundefined%26tid%3DGCVYJ9KPNQ2FWJW25ZS5%26aftb%3D1%26lob%3D0:3633 — -1 — 0 B — 0 ms —
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 1186ms · 158KB · $7/mo
Unattributable
Other
Costly
Execution 541ms
Transfer 0 KB
Monthly Cost $3/mo
alexa.amazon.com
Other
Costly
Execution 477ms
Transfer 61 KB
Monthly Cost $3/mo
m.media-amazon.com
Other
Optional
Execution 169ms
Transfer 97 KB
Unused 65%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 541ms and costs ~$3/month
  • alexa.amazon.com adds 477ms 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

Unattributable takes 541ms 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

alexa.amazon.com takes 477ms 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

65% of m.media-amazon.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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