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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
55
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.

1.17 s

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

3.40 s

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

378 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.

3.00 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.

3.44 s

Page Load Progression

435 ms
870 ms
1.3 s
1.7 s
2.2 s
2.6 s
3.0 s
3.5 s
Checks
14
5 PASS 3 REVIEW 4 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 88 requests
FIX
2.5 MB transferred, 88 requests
Warning::
Page weighs 10.3 MB (2.5 MB transferred)
Warning::
JavaScript is 2.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.2 MB
Info::
88 HTTP requests
Info::
Estimated 0.53 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
88 requests
0.53 g CO2 per page load
JavaScript 2.2 MiB 86%
Fonts 149.5 KiB 6%
CSS 102.9 KiB 4%
Images 43.8 KiB 2%
HTML 29.1 KiB 1%
Other 15.0 KiB 1%
Other 11.1 KiB 0%
Other 2.8 KiB 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

D
JS Execution Cost
Action
2396ms total JS execution
FIX
2396ms total JS execution
Warning::
https://www.fedex.com/global/choose-location.html: 783ms CPU time
Warning::
https://www.fedex.com/assets/79a26a5472ae5cd0a0e5f...: 294ms CPU time
Warning::
Unattributable: 282ms CPU time
Info::
https://www.fedex.com/E80caW4ngR02/FHpJqZ/kxMI4c/1...: 236ms CPU time
Info::
https://www.fedex.com/gdl/next/gdl-next-fedex.js: 138ms CPU time
Info::
Third-party scripts: 709ms (30% of total)

Main Thread Breakdown

Script Evaluation 62% Script Parsing & Compilation 15% Other 11% Style & Layout 6%
ScriptTotalScriptingParse/CompileParty
https://www.fedex.com/global/choose-location.html783ms524ms3ms1st
https://www.fedex.com/assets/79a26a5472ae5cd0a0e5f981ba0cc5db9001192124f294ms251ms11ms1st
Unattributable282ms26ms0ms3rd
https://www.fedex.com/E80caW4ngR02/FHpJqZ/kxMI4c/1QDuGc7rhO1mkhz5J9/WHQ5MQ/DzNT/PH5iWhsB236ms208ms25ms1st
https://www.fedex.com/gdl/next/gdl-next-fedex.js138ms108ms30ms1st
https://assets.adobedtm.com/686b8f0c4520/a46df9c77975/launch-f96010731c97-development.min.js133ms24ms108ms3rd
https://assets.adobedtm.com/launch-EN3932511771fb4e5e9dd852ae89372b59.min.js109ms86ms19ms3rd
https://www.fedex.com/etc.clientlibs/fedex-core/clientlibs/clientlib-base.min.6f845103576f960f0af0a8dcc01f88c9.js101ms19ms78ms1st
https://www.fedex.com/etc.clientlibs/fedex-core/clientlibs/clientlib-dependencies.min.f9eae93dbda59781f90cbc78ffd930b7.js80ms50ms24ms1st
https://maps.googleapis.com/maps/api/js?key=testkey&libraries=places&callback=FDX.INPUT.gmInitAutoComplete75ms48ms26ms3rd

Showing top 10 of 13 scripts

F
JS Bundles
Action
47 scripts, 908 KB unused
FIX
47 scripts, 908 KB unused
Warning::
https://www.fedex.com/etc.clientlibs/fedex-core/cl...: 218 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.fedex.com/etc.clientlibs/fedex-core/cl...: unminified — 128 KB could be saved
Warning::
https://www.fedex.com/etc.clientlibs/fedex-core/cl...: 120 KB unused (74%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.adobedtm.com/686b8f0c4520/a46df9c77...: 112 KB unused (19%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.fedex.com/gdl/next/gdl-next-fedex.js: 104 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://maps.googleapis.com/maps/api/js?key=testke...: 99 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 908 KB
908 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.fedex.com/etc.clientlibs/fedex-core/clientlibs/clientlib-base.min.6f845103576f960f0af0a8dcc01f88c9.js291 KB218 KB (75%)✗1st
https://www.fedex.com/etc.clientlibs/fedex-core/clientlibs/clientlib-dependencies.min.f9eae93dbda59781f90cbc78ffd930b7.js161 KB120 KB (74%)✓1st
https://assets.adobedtm.com/686b8f0c4520/a46df9c77975/launch-f96010731c97-development.min.js591 KB112 KB (19%)✓3rd
https://www.fedex.com/gdl/next/gdl-next-fedex.js179 KB104 KB (58%)✓1st
https://maps.googleapis.com/maps/api/js?key=testkey&libraries=places&callback=FDX.INPUT.gmInitAutoComplete178 KB99 KB (56%)✓3rd
https://assets.adobedtm.com/launch-EN3932511771fb4e5e9dd852ae89372b59.min.js117 KB70 KB (60%)✓3rd
https://web.cmp.usercentrics.eu/ui/v/3.111.0/WebSdk.lib.f9924d53.js73 KB43 KB (59%)✗3rd
https://www.fedex.com/E80caW4ngR02/FHpJqZ/kxMI4c/1QDuGc7rhO1mkhz5J9/WHQ5MQ/DzNT/PH5iWhsB167 KB33 KB (20%)✓1st
https://www.fedex.com/etc.clientlibs/clientlibs/granite/jquery.min.cee8557e8779d371fe722bbcdd3b3eb7.js35 KB24 KB (68%)✓1st
https://siteintercept.qualtrics.com/dxjsmodule/12.45e656039b3fa23613e1.chunk.js?Q_CLIENTVERSION=2.45.0&Q_CLIENTTYPE=web&Q_BRANDID=www.fedex.com36 KB22 KB (62%)✓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.
Info::
ETag present — enables conditional (304) responses

No Cache-Control header

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

B
Third-Party Impact
50% third-party, 0 ms blocking
REVIEW
50% third-party, 0 ms blocking
Info::
Third-party code accounts for 50% of page weight (1.3 MiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
50%
50%
First-party Third-party
B
Image Optimization
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Info::
All images are well-optimized
16 images 44 KB
0 oversized -0 KB
12 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
4 fonts (149 KB)
PASS
4 fonts (149 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

149 KB total

Render-blocking

0

of 4

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 1.2 s LCP 3.4 shttps://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Bold.woff2FedExSans_W-Bold.woff2 https://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Bold.woff2 — 38.4 KiB — 0 ms — font-display: swaphttps://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Regular.woff2FedExSans_W-Regular.woff2 https://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Regular.woff2 — 36.9 KiB — 0 ms — font-display: swaphttps://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Medium.woff2FedExSans_W-Medium.woff2 https://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Medium.woff2 — 37.2 KiB — 0 ms — font-display: swaphttps://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Light.woff2FedExSans_W-Light.woff2 https://www.fedex.com/etc/clientlibs/fedex/common/css/resources/fonts/FedExSans_W-Light.woff2 — 37.1 KiB — 0 ms — font-display: swap
FedExSans_W-Bold.woff2 woff2 swap
Size 38 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
FedExSans_W-Regular.woff2 woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
FedExSans_W-Medium.woff2 woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
FedExSans_W-Light.woff2 woff2 swap
Size 37 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)
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
88 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
30% of JavaScript execution is third-party
First-party Third-party 709ms · 996KB · $9/mo
Unattributable
Other
Costly
Execution 282ms
Transfer 0 KB
Monthly Cost $4/mo
assets.adobedtm.com
Other
Optional
Execution 133ms
Transfer 591 KB
Unused 19%
Monthly Cost $2/mo
assets.adobedtm.com
Other
Optional
Execution 109ms
Transfer 117 KB
Unused 60%
Monthly Cost $1/mo
maps.googleapis.com
Other
Optional
Execution 75ms
Transfer 178 KB
Unused 56%
Monthly Cost $1/mo
web.cmp.usercentrics.eu
Other
Optional
Execution 57ms
Transfer 73 KB
Unused 59%
Monthly Cost $1/mo
siteintercept.qualtrics.com
Other
Optional
Execution 52ms
Transfer 36 KB
Unused 62%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 282ms and costs ~$4/month

Unattributable takes 282ms 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

60% of assets.adobedtm.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

56% of maps.googleapis.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

59% of web.cmp.usercentrics.eu'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

62% of siteintercept.qualtrics.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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