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https://itunes.apple.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
1
REVIEW
7
PASS
7
INFO
2

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

Mobile Desktop
58
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.

7.87 s

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

8.62 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.

0.000

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

7.87 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.

8.62 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
17
7 PASS 7 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 (1.4 MiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
B
Page Weight Budget
1.4 MB transferred, 41 requests
REVIEW
1.4 MB transferred, 41 requests
Info::
Page weighs 2.4 MB (1.4 MB transferred)
Info::
Fonts are 728 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 728 KB
Info::
41 HTTP requests
Info::
Estimated 0.29 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
41 requests
0.29 g CO2 per page load
Fonts 727.5 KiB 51%
JavaScript 349.5 KiB 25%
Images 195.7 KiB 14%
CSS 50.7 KiB 4%
Other 41.3 KiB 3%
HTML 29.2 KiB 2%
Other 24.7 KiB 2%
Other 2.4 KiB 0%
0 2.4 MB 4.9 MB
Under budget

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

B
Image Optimization
7 images, 0 KB saveable
REVIEW
7 images, 0 KB saveable
Info::
All images are well-optimized
7 images 196 KB
0 oversized -0 KB
7 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1608ms total JS execution
REVIEW
1608ms total JS execution
Warning::
https://www.apple.com/api-www/global-elements/glob...: 419ms CPU time
Warning::
https://www.apple.com/metrics/ac-analytics/2.29.1/...: 278ms CPU time
Info::
https://www.apple.com/metrics/ac-analytics/2.29.1/...: 206ms CPU time
Info::
Unattributable: 204ms CPU time
Info::
https://www.apple.com/itunes/: 195ms CPU time
Warning::
Third-party scripts: 1608ms (100% of total)

Main Thread Breakdown

Script Evaluation 42% Style & Layout 27% Other 19% Parse HTML & CSS 5% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.umd.js419ms281ms12ms3rd
https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/auto-init.js278ms179ms0ms3rd
https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/ac-analytics.js206ms44ms52ms3rd
Unattributable204ms9ms0ms3rd
https://www.apple.com/itunes/195ms4ms1ms3rd
https://www.apple.com/v/itunes/home/l/built/scripts/main.built.js170ms39ms2ms3rd
https://www.apple.com/ac/localeswitcher/4/en_US/scripts/localeswitcher.built.js136ms117ms14ms3rd
B
JS Bundles
9 scripts, 97 KB unused
REVIEW
9 scripts, 97 KB unused
Warning::
https://www.apple.com/api-www/global-elements/glob...: 56 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.apple.com/metrics/ac-analytics/2.29.1/...: 41 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 97 KB
97 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.umd.js161 KB56 KB (35%)✓3rd
https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/ac-analytics.js102 KB41 KB (40%)✓3rd
https://www.apple.com/v/itunes/home/l/built/scripts/head.built.js13 KB—✓3rd
https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/auto-init.js1 KB—✓3rd
https://www.apple.com/metrics/data-relay/1.2.0/scripts/data-relay.js6 KB—✓3rd
https://www.apple.com/metrics/data-relay/1.2.0/scripts/auto-relay.js1 KB—✓3rd
https://www.apple.com/ac/globalfooter/8/en_US/scripts/ac-globalfooter.built.js4 KB—✓3rd
https://www.apple.com/ac/localeswitcher/4/en_US/scripts/localeswitcher.built.js56 KB—✓3rd
https://www.apple.com/v/itunes/home/l/built/scripts/main.built.js6 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
Page Weight Inventory
Action
41 resources · 1.4 MB · 97 KB savings available
REVIEW
41 resources · 1.4 MB · 97 KB savings available
Warning::
Page weight 397 KB over 1MB target
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~97 KB of savings available
Warning::
40 third-party resources (100% of weight)
41 resources · 1.4 MiB · 40 third-party 397.0 KiB over 1MB target
Font 51% · 727.5 KiB
JavaScript 25% · 349.5 KiB
Image 15% · 218.4 KiB
CSS 4% · 50.7 KiB
Other 3% · 44.6 KiB
Document 2% · 30.4 KiB

~97.2 KiB of savings available

Remove unused JavaScript: 97.2 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
no-transform, max-age=0
REVIEW
no-transform, max-age=0
Info::
Cache-Control header is set
Got: no-transform, max-age=0
Info::
Last-Modified header present
Cache-Control

no-transform, max-age=0

DirectiveValueMeaning
no-transform—
max-age0Cache for 0 seconds
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
10 fonts (728 KB)
PASS
10 fonts (728 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

728 KB total

Render-blocking

0

of 10

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 7.0 s 8.0 s 9.0 s FCP 7.9 s LCP 8.6 shttps://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_semibold.woff2sf-pro-display_semibold... https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_semibold.woff2 — 107.8 KiB — 21 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold.woff2sf-pro-text_semibold.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold.woff2 — 107.9 KiB — 7 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_regular.woff2sf-pro-text_regular.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_regular.woff2 — 97.6 KiB — 9 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_bold.woff2sf-pro-text_bold.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_bold.woff2 — 106.8 KiB — 15 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_regular.woff2sf-pro-display_regular.... https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_regular.woff2 — 96.3 KiB — 24 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_regular.woffSFProIcons_regular.woff https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_regular.woff — 10.8 KiB — 21 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold-italic.woff2sf-pro-text_semibold-it... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold-italic.woff2 — 72.9 KiB — 26 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_semibold.woffSFProIcons_semibold.woff https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_semibold.woff — 9.4 KiB — 22 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_light.woffSFProIcons_light.woff https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_light.woff — 10.9 KiB — 30 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_light.woff2sf-pro-text_light.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_light.woff2 — 107.1 KiB — 167 ms — font-display: swap
sf-pro-display_semibold... woff2 swap
Size 108 KB
Load time 21 ms
Start 763 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
sf-pro-text_semibold.woff2 woff2 swap
Size 108 KB
Load time 7 ms
Start 763 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
sf-pro-text_regular.woff2 woff2 swap
Size 98 KB
Load time 9 ms
Start 763 ms
Risk FOUT — text flashes from fallback to web font
sf-pro-text_bold.woff2 woff2 swap
Size 107 KB
Load time 15 ms
Start 815 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
sf-pro-display_regular.... woff2 swap
Size 96 KB
Load time 24 ms
Start 816 ms
Risk FOUT — text flashes from fallback to web font
SFProIcons_regular.woff woff swap
Size 11 KB
Load time 21 ms
Start 816 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
sf-pro-text_semibold-it... woff2 swap
Size 73 KB
Load time 26 ms
Start 816 ms
Risk FOUT — text flashes from fallback to web font
SFProIcons_semibold.woff woff swap
Size 9 KB
Load time 22 ms
Start 816 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
SFProIcons_light.woff woff swap
Size 11 KB
Load time 30 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
sf-pro-text_light.woff2 woff2 swap
Size 107 KB
Load time 167 ms
Start 1.0 s
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 ~224 KB and ~448 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
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
41 requests over 1236ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 7.9 s LCP 8.6 shttps://itunes.apple.com// https://itunes.apple.com/ — 301 — 1.2 KiB — 220 ms — h2https://www.apple.com/itunes/www.apple.com/itunes/ https://www.apple.com/itunes/ — 200 — 29.2 KiB — 113 ms — h2https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.csswww.apple.com/api-www/global-elemen... https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.css — 200 — 15.5 KiB — 318 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/styles/ac-globalfooter.built.csswww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/styles/ac-globalfooter.built.css — 200 — 7.1 KiB — 51 ms — h2https://www.apple.com/ac/localnav/9/styles/ac-localnav.built.csswww.apple.com/ac/localnav/9/styles/... https://www.apple.com/ac/localnav/9/styles/ac-localnav.built.css — 200 — 8.2 KiB — 50 ms — h2https://www.apple.com/wss/fonts?families=SF+Pro,v2|SF+Pro+Icons,v1www.apple.com/wss/fonts?families=SF... https://www.apple.com/wss/fonts?families=SF+Pro,v2|SF+Pro+Icons,v1 — 200 — 1.8 KiB — 226 ms — h2https://www.apple.com/v/itunes/home/l/built/styles/main.built.csswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/styles/main.built.css — 200 — 8.5 KiB — 55 ms — h2https://www.apple.com/v/itunes/home/l/built/styles/overview.built.csswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/styles/overview.built.css — 200 — 4.1 KiB — 22 ms — h2https://www.apple.com/v/itunes/home/l/built/scripts/head.built.jswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/scripts/head.built.js — 200 — 13.3 KiB — 33 ms — h2https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.umd.jswww.apple.com/api-www/global-elemen... https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.umd.js — 200 — 161.1 KiB — 28 ms — h2https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/ac-analytics.jswww.apple.com/metrics/ac-analytics/... https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/ac-analytics.js — 200 — 102.1 KiB — 217 ms — h2https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/auto-init.jswww.apple.com/metrics/ac-analytics/... https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/auto-init.js — 200 — 850 B — 24 ms — h2https://www.apple.com/metrics/data-relay/1.2.0/scripts/data-relay.jswww.apple.com/metrics/data-relay/1.... https://www.apple.com/metrics/data-relay/1.2.0/scripts/data-relay.js — 200 — 5.8 KiB — 122 ms — h2https://www.apple.com/metrics/data-relay/1.2.0/scripts/auto-relay.jswww.apple.com/metrics/data-relay/1.... https://www.apple.com/metrics/data-relay/1.2.0/scripts/auto-relay.js — 200 — 937 B — 46 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/scripts/ac-globalfooter.built.jswww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/scripts/ac-globalfooter.built.js — 200 — 3.8 KiB — 29 ms — h2https://www.apple.com/ac/localeswitcher/4/en_US/scripts/localeswitcher.built.jswww.apple.com/ac/localeswitcher/4/e... https://www.apple.com/ac/localeswitcher/4/en_US/scripts/localeswitcher.built.js — 200 — 55.6 KiB — 53 ms — h2https://www.apple.com/v/itunes/home/l/built/scripts/main.built.jswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/scripts/main.built.js — 200 — 6.1 KiB — 24 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_semibold.woff2www.apple.com/wss/fonts/SF-Pro-Disp... https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_semibold.woff2 — 200 — 107.8 KiB — 21 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold.woff2 — 200 — 107.9 KiB — 7 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_regular.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_regular.woff2 — 200 — 97.6 KiB — 9 ms — h2https://securemetrics.apple.com/b/ss/applestoreww/1/JS-2.23.0/s86216852848517?AQB=1&ndh=1&pf=1&t=21%2F3%2F2026%2018%3A46%3A16%202%200&fid=7068989006EA7D7E-358A714C9A298C8D&ce=UTF-8&cdp=2&cl=1800&pageName=itunes%20-%20index%20%28us%29&g=https%3A%2F%2Fwww.apple.com%2Fitunes%2F&cc=USD&ch=www.us.itunes&server=ac-2.29.1&h1=www.us.itunes&c2=itunes%20default%20view&v3=aos%3A%20us&l3=D%3Das_tex&c4=D%3Dg&v4=D%3DpageName&v14=en-us&c20=aos%3A%20us&v54=D%3Dg&v97=s.t-p&s=412x823&c=24&j=1.6&v=N&k=Y&bw=412&bh=823&AQE=1securemetrics.apple.com/b/ss/apples... https://securemetrics.apple.com/b/ss/applestoreww/1/JS-2.23.0/s86216852848517?AQB=1&ndh=1&pf=1&t=21%2F3%2F2026%2018%3A46%3A16%202%200&fid=7068989006EA7D7E-358A714C9A298C8D&ce=UTF-8&cdp=2&cl=1800&pageName=itunes%20-%20index%20%28us%29&g=https%3A%2F%2Fwww.apple.com%2Fitunes%2F&cc=USD&ch=www.us.itunes&server=ac-2.29.1&h1=www.us.itunes&c2=itunes%20default%20view&v3=aos%3A%20us&l3=D%3Das_tex&c4=D%3Dg&v4=D%3DpageName&v14=en-us&c20=aos%3A%20us&v54=D%3Dg&v97=s.t-p&s=412x823&c=24&j=1.6&v=N&k=Y&bw=412&bh=823&AQE=1 — 302 — 921 B — 162 ms — h2https://www.apple.com/ac/localeswitcher/4/es_ES/content/localeswitcher.jsonwww.apple.com/ac/localeswitcher/4/e... https://www.apple.com/ac/localeswitcher/4/es_ES/content/localeswitcher.json — 200 — 1.2 KiB — 29 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/screen_new_mix__cb9y8qvsvb0i_small_2x.jpgwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/screen_new_mix__cb9y8qvsvb0i_small_2x.jpg — 200 — 49.0 KiB — 37 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/mbair_itunes__bkf9ksiikx6u_small_2x.pngwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/mbair_itunes__bkf9ksiikx6u_small_2x.png — 200 — 26.5 KiB — 54 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/screen_appletv__gd3vm2df43iq_small_2x.jpgwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/screen_appletv__gd3vm2df43iq_small_2x.jpg — 200 — 55.6 KiB — 32 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/screen_podcasts__di6468i1b6c2_small_2x.jpgwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/screen_podcasts__di6468i1b6c2_small_2x.jpg — 200 — 61.6 KiB — 56 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/apple/icon_large.svgwww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/apple/icon_large.svg — 200 — 1.4 KiB — 75 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/separator/icon_large.svgwww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/separator/icon_large.svg — 200 — 996 B — 56 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_bold.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_bold.woff2 — 200 — 106.8 KiB — 15 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_regular.woff2www.apple.com/wss/fonts/SF-Pro-Disp... https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_regular.woff2 — 200 — 96.3 KiB — 24 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 7.9 s LCP 8.6 shttps://itunes.apple.com// https://itunes.apple.com/ — 301 — 1.2 KiB — 220 ms — h2https://www.apple.com/itunes/www.apple.com/itunes/ https://www.apple.com/itunes/ — 200 — 29.2 KiB — 113 ms — h2https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.csswww.apple.com/api-www/global-elemen... https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.css — 200 — 15.5 KiB — 318 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/styles/ac-globalfooter.built.csswww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/styles/ac-globalfooter.built.css — 200 — 7.1 KiB — 51 ms — h2https://www.apple.com/ac/localnav/9/styles/ac-localnav.built.csswww.apple.com/ac/localnav/9/styles/... https://www.apple.com/ac/localnav/9/styles/ac-localnav.built.css — 200 — 8.2 KiB — 50 ms — h2https://www.apple.com/wss/fonts?families=SF+Pro,v2|SF+Pro+Icons,v1www.apple.com/wss/fonts?families=SF... https://www.apple.com/wss/fonts?families=SF+Pro,v2|SF+Pro+Icons,v1 — 200 — 1.8 KiB — 226 ms — h2https://www.apple.com/v/itunes/home/l/built/styles/main.built.csswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/styles/main.built.css — 200 — 8.5 KiB — 55 ms — h2https://www.apple.com/v/itunes/home/l/built/styles/overview.built.csswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/styles/overview.built.css — 200 — 4.1 KiB — 22 ms — h2https://www.apple.com/v/itunes/home/l/built/scripts/head.built.jswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/scripts/head.built.js — 200 — 13.3 KiB — 33 ms — h2https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.umd.jswww.apple.com/api-www/global-elemen... https://www.apple.com/api-www/global-elements/global-header/v1/assets/globalheader.umd.js — 200 — 161.1 KiB — 28 ms — h2https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/ac-analytics.jswww.apple.com/metrics/ac-analytics/... https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/ac-analytics.js — 200 — 102.1 KiB — 217 ms — h2https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/auto-init.jswww.apple.com/metrics/ac-analytics/... https://www.apple.com/metrics/ac-analytics/2.29.1/scripts/auto-init.js — 200 — 850 B — 24 ms — h2https://www.apple.com/metrics/data-relay/1.2.0/scripts/data-relay.jswww.apple.com/metrics/data-relay/1.... https://www.apple.com/metrics/data-relay/1.2.0/scripts/data-relay.js — 200 — 5.8 KiB — 122 ms — h2https://www.apple.com/metrics/data-relay/1.2.0/scripts/auto-relay.jswww.apple.com/metrics/data-relay/1.... https://www.apple.com/metrics/data-relay/1.2.0/scripts/auto-relay.js — 200 — 937 B — 46 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/scripts/ac-globalfooter.built.jswww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/scripts/ac-globalfooter.built.js — 200 — 3.8 KiB — 29 ms — h2https://www.apple.com/ac/localeswitcher/4/en_US/scripts/localeswitcher.built.jswww.apple.com/ac/localeswitcher/4/e... https://www.apple.com/ac/localeswitcher/4/en_US/scripts/localeswitcher.built.js — 200 — 55.6 KiB — 53 ms — h2https://www.apple.com/v/itunes/home/l/built/scripts/main.built.jswww.apple.com/v/itunes/home/l/built... https://www.apple.com/v/itunes/home/l/built/scripts/main.built.js — 200 — 6.1 KiB — 24 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_semibold.woff2www.apple.com/wss/fonts/SF-Pro-Disp... https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_semibold.woff2 — 200 — 107.8 KiB — 21 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold.woff2 — 200 — 107.9 KiB — 7 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_regular.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_regular.woff2 — 200 — 97.6 KiB — 9 ms — h2https://securemetrics.apple.com/b/ss/applestoreww/1/JS-2.23.0/s86216852848517?AQB=1&ndh=1&pf=1&t=21%2F3%2F2026%2018%3A46%3A16%202%200&fid=7068989006EA7D7E-358A714C9A298C8D&ce=UTF-8&cdp=2&cl=1800&pageName=itunes%20-%20index%20%28us%29&g=https%3A%2F%2Fwww.apple.com%2Fitunes%2F&cc=USD&ch=www.us.itunes&server=ac-2.29.1&h1=www.us.itunes&c2=itunes%20default%20view&v3=aos%3A%20us&l3=D%3Das_tex&c4=D%3Dg&v4=D%3DpageName&v14=en-us&c20=aos%3A%20us&v54=D%3Dg&v97=s.t-p&s=412x823&c=24&j=1.6&v=N&k=Y&bw=412&bh=823&AQE=1securemetrics.apple.com/b/ss/apples... https://securemetrics.apple.com/b/ss/applestoreww/1/JS-2.23.0/s86216852848517?AQB=1&ndh=1&pf=1&t=21%2F3%2F2026%2018%3A46%3A16%202%200&fid=7068989006EA7D7E-358A714C9A298C8D&ce=UTF-8&cdp=2&cl=1800&pageName=itunes%20-%20index%20%28us%29&g=https%3A%2F%2Fwww.apple.com%2Fitunes%2F&cc=USD&ch=www.us.itunes&server=ac-2.29.1&h1=www.us.itunes&c2=itunes%20default%20view&v3=aos%3A%20us&l3=D%3Das_tex&c4=D%3Dg&v4=D%3DpageName&v14=en-us&c20=aos%3A%20us&v54=D%3Dg&v97=s.t-p&s=412x823&c=24&j=1.6&v=N&k=Y&bw=412&bh=823&AQE=1 — 302 — 921 B — 162 ms — h2https://www.apple.com/ac/localeswitcher/4/es_ES/content/localeswitcher.jsonwww.apple.com/ac/localeswitcher/4/e... https://www.apple.com/ac/localeswitcher/4/es_ES/content/localeswitcher.json — 200 — 1.2 KiB — 29 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/screen_new_mix__cb9y8qvsvb0i_small_2x.jpgwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/screen_new_mix__cb9y8qvsvb0i_small_2x.jpg — 200 — 49.0 KiB — 37 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/mbair_itunes__bkf9ksiikx6u_small_2x.pngwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/mbair_itunes__bkf9ksiikx6u_small_2x.png — 200 — 26.5 KiB — 54 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/screen_appletv__gd3vm2df43iq_small_2x.jpgwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/screen_appletv__gd3vm2df43iq_small_2x.jpg — 200 — 55.6 KiB — 32 ms — h2https://www.apple.com/v/itunes/home/l/images/overview/screen_podcasts__di6468i1b6c2_small_2x.jpgwww.apple.com/v/itunes/home/l/image... https://www.apple.com/v/itunes/home/l/images/overview/screen_podcasts__di6468i1b6c2_small_2x.jpg — 200 — 61.6 KiB — 56 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/apple/icon_large.svgwww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/apple/icon_large.svg — 200 — 1.4 KiB — 75 ms — h2https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/separator/icon_large.svgwww.apple.com/ac/globalfooter/8/en_... https://www.apple.com/ac/globalfooter/8/en_US/assets/ac-footer/breadcrumbs/separator/icon_large.svg — 200 — 996 B — 56 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_bold.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_bold.woff2 — 200 — 106.8 KiB — 15 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_regular.woff2www.apple.com/wss/fonts/SF-Pro-Disp... https://www.apple.com/wss/fonts/SF-Pro-Display/v2/sf-pro-display_regular.woff2 — 200 — 96.3 KiB — 24 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_regular.woffwww.apple.com/wss/fonts/SF-Pro-Icon... https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_regular.woff — 200 — 10.8 KiB — 21 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold-italic.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_semibold-italic.woff2 — 200 — 72.9 KiB — 26 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_semibold.woffwww.apple.com/wss/fonts/SF-Pro-Icon... https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_semibold.woff — 200 — 9.4 KiB — 22 ms — h2https://www.apple.com/api-www/global-elements/global-header/v1/flyouts?locale=en_USwww.apple.com/api-www/global-elemen... https://www.apple.com/api-www/global-elements/global-header/v1/flyouts?locale=en_US — 200 — 40.5 KiB — 392 ms — h2https://www.apple.com/search-services/suggestions/defaultlinks/?src=globalnav&locale=en_USwww.apple.com/search-services/sugge... https://www.apple.com/search-services/suggestions/defaultlinks/?src=globalnav&locale=en_US — 200 — 781 B — 39 ms — h2https://www.apple.com/us/shop/bag/status?apikey=SFX9YPYY9PPXCU9KHwww.apple.com/us/shop/bag/status?ap... https://www.apple.com/us/shop/bag/status?apikey=SFX9YPYY9PPXCU9KH — 200 — 1.2 KiB — 186 ms — h2https://www.apple.com/ac/localeswitcher/4/es_ES/styles/localeswitcher.built.csswww.apple.com/ac/localeswitcher/4/e... https://www.apple.com/ac/localeswitcher/4/es_ES/styles/localeswitcher.built.css — 200 — 5.3 KiB — 62 ms — h2https://securemetrics.apple.com/b/ss/applestoreww/1/JS-2.23.0/s86216852848517?AQB=1&pccr=true&vidn=34F3E2FC07E07297-60001FAB655DF51E&ndh=1&pf=1&t=21%2F3%2F2026%2018%3A46%3A16%202%200&fid=7068989006EA7D7E-358A714C9A298C8D&ce=UTF-8&cdp=2&cl=1800&pageName=itunes%20-%20index%20%28us%29&g=https%3A%2F%2Fwww.apple.com%2Fitunes%2F&cc=USD&ch=www.us.itunes&server=ac-2.29.1&h1=www.us.itunes&c2=itunes%20default%20view&v3=aos%3A%20us&l3=D%3Das_tex&c4=D%3Dg&v4=D%3DpageName&v14=en-us&c20=aos%3A%20us&v54=D%3Dg&v97=s.t-p&s=412x823&c=24&j=1.6&v=N&k=Y&bw=412&bh=823&AQE=1securemetrics.apple.com/b/ss/apples... https://securemetrics.apple.com/b/ss/applestoreww/1/JS-2.23.0/s86216852848517?AQB=1&pccr=true&vidn=34F3E2FC07E07297-60001FAB655DF51E&ndh=1&pf=1&t=21%2F3%2F2026%2018%3A46%3A16%202%200&fid=7068989006EA7D7E-358A714C9A298C8D&ce=UTF-8&cdp=2&cl=1800&pageName=itunes%20-%20index%20%28us%29&g=https%3A%2F%2Fwww.apple.com%2Fitunes%2F&cc=USD&ch=www.us.itunes&server=ac-2.29.1&h1=www.us.itunes&c2=itunes%20default%20view&v3=aos%3A%20us&l3=D%3Das_tex&c4=D%3Dg&v4=D%3DpageName&v14=en-us&c20=aos%3A%20us&v54=D%3Dg&v97=s.t-p&s=412x823&c=24&j=1.6&v=N&k=Y&bw=412&bh=823&AQE=1 — 200 — 582 B — 56 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_light.woffwww.apple.com/wss/fonts/SF-Pro-Icon... https://www.apple.com/wss/fonts/SF-Pro-Icons/v1/SFProIcons_light.woff — 200 — 10.9 KiB — 30 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_light.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v2/sf-pro-text_light.woff2 — 200 — 107.1 KiB — 167 ms — h2https://www.apple.com/favicon.icowww.apple.com/favicon.ico https://www.apple.com/favicon.ico — 200 — 22.6 KiB — 77 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 1608ms · 355KB · $9/mo
www.apple.com
Other
Costly
Execution 419ms
Transfer 161 KB
Unused 35%
Monthly Cost $2/mo
www.apple.com
Other
Costly
Execution 278ms
Transfer 1 KB
Monthly Cost $2/mo
www.apple.com
Other
Costly
Execution 206ms
Transfer 102 KB
Unused 40%
Monthly Cost $1/mo
Unattributable
Other
Costly
Execution 204ms
Transfer 0 KB
Monthly Cost $1/mo
www.apple.com
Other
Optional
Execution 195ms
Transfer 29 KB
Monthly Cost $1/mo
www.apple.com
Other
Optional
Execution 170ms
Transfer 6 KB
Monthly Cost $1/mo
www.apple.com
Other
Optional
Execution 136ms
Transfer 56 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.apple.com adds 419ms and costs ~$2/month
  • www.apple.com adds 278ms and costs ~$2/month
  • www.apple.com adds 206ms and costs ~$1/month
  • Unattributable adds 204ms and costs ~$1/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.apple.com takes 419ms 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.apple.com takes 278ms 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.apple.com takes 206ms 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 204ms 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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