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https://mastercard.us

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
67
GRADE
D
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
26
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
99
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.
82
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.

5.76 s

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

136.72 s

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

3.05 s

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

0.015

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

52.45 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.

137.18 s

Page Load Progression

680 ms
1.4 s
2.0 s
2.7 s
3.4 s
4.1 s
4.8 s
5.4 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
73.5 MB transferred, 88 requests
FIX
73.5 MB transferred, 88 requests
Critical::
Page weighs 78.6 MB (73.5 MB transferred)
Warning::
Images are 48.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 48.2 MB
Warning::
JavaScript is 1.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.3 MB
Info::
Fonts are 230 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 230 KB
Info::
88 HTTP requests
Info::
Estimated 15.4 g CO2 per page load
73.5 MB / 2.4 MB budget
73.5 MB transferred
88 requests
15.4 g CO2 per page load
Images 48.2 MiB 66%
Other 23.6 MiB 32%
JavaScript 1.3 MiB 2%
Fonts 230.5 KiB 0%
CSS 149.5 KiB 0%
Other 56.6 KiB 0%
HTML 25.5 KiB 0%
Other 8.3 KiB 0%
Other 2.0 KiB 0%
Other 912 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

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

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 (73.5 MiB of 73.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
12703ms total JS execution
FIX
12703ms total JS execution
Warning::
https://www.mastercard.com/etc.clientlibs/marts/cl...: 3613ms CPU time
Warning::
Unattributable: 2928ms CPU time
Warning::
https://www.mastercard.com/rysmLZ/l7F/tV8/4hUmLK2S...: 1563ms CPU time
Warning::
https://asset.forms.mastercard.com/forms-ui@v2.0.8...: 1206ms CPU time
Warning::
https://www.mastercard.com/us/en.html: 747ms CPU time
Warning::
Third-party scripts: 12703ms (100% of total)

Main Thread Breakdown

Script Evaluation 44% Other 30% Style & Layout 12% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site.lc-ca8f99be5b638982eeb3847c915e0cfa-lc.min.js3613ms1164ms364ms3rd
Unattributable2928ms268ms0ms3rd
https://www.mastercard.com/rysmLZ/l7F/tV8/4hUmLK2S/iYEYX4r97Oucr2Oz/IhkYIg/ShUxeHpN/GkkB1563ms1285ms93ms3rd
https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-ZQiyzviC.js1206ms1134ms1ms3rd
https://www.mastercard.com/us/en.html747ms13ms6ms3rd
https://cdn.cookielaw.org/scripttemplates/202604.1.0/otBannerSdk.js611ms402ms82ms3rd
https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-site.lc-39e1e2e5e7bb50ebf287c0448303b970-lc.min.js595ms355ms183ms3rd
https://assets.adobedtm.com/acdc00762da2/83bdb98d95f8/launch-05f4b8356cc4.min.js563ms399ms109ms3rd
https://www.mastercard.com/akam/13/7ad3fecb416ms215ms8ms3rd
https://www.mastercard.com/etc.clientlibs/core/wcm/components/commons/datalayer/acdl/core.wcm.components.commons.datalayer.acdl.lc-bf921af342fd2c40139671dbf0920a1f-lc.min.js103ms78ms23ms3rd

Showing top 10 of 14 scripts

F
JS Bundles
Action
33 scripts, 556 KB unused
FIX
33 scripts, 556 KB unused
Warning::
https://www.mastercard.com/etc.clientlibs/marts/cl...: 231 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.mastercard.com/etc.clientlibs/marts/cl...: unminified — 229 KB could be saved
Warning::
https://www.mastercard.com/etc.clientlibs/algolia/...: 188 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202604.1...: 69 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.mastercard.com/rysmLZ/l7F/tV8/4hUmLK2S...: 35 KB unused (20%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.adobedtm.com/acdc00762da2/83bdb98d9...: 33 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 556 KB
556 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site.lc-ca8f99be5b638982eeb3847c915e0cfa-lc.min.js470 KB231 KB (49%)✗3rd
https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-site.lc-39e1e2e5e7bb50ebf287c0448303b970-lc.min.js255 KB188 KB (75%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202604.1.0/otBannerSdk.js131 KB69 KB (53%)✓3rd
https://www.mastercard.com/rysmLZ/l7F/tV8/4hUmLK2S/iYEYX4r97Oucr2Oz/IhkYIg/ShUxeHpN/GkkB175 KB35 KB (20%)✓3rd
https://assets.adobedtm.com/acdc00762da2/83bdb98d95f8/launch-05f4b8356cc4.min.js89 KB33 KB (37%)✓3rd
https://www.mastercard.com/akam/13/7ad3fecb9 KB—✓3rd
https://www.mastercard.com/etc.clientlibs/clientlibs/granite/jquery/granite/csrf.lc-652a558c3774088b61b0530c184710d1-lc.min.js2 KB—✓3rd
https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-Ct6sGP3H.js1 KB—✓3rd
https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-hooksInitialization.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.js0 KB—✓3rd
https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-algoliaext.lc-0874cc45a78bddbdf6a32b4cc9a1c947-lc.min.js3 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

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
Page Weight Inventory
Action
88 resources · 73.5 MB · 556 KB savings available
FIX
88 resources · 73.5 MB · 556 KB savings available
Warning::
Page weight 72.5 MB over 1MB target
Got: 73.5 MB Expected: ≤ 1 MB
Info::
~556 KB of savings available
Warning::
87 third-party resources (100% of weight)
Info::
8 resources over 200KB
88 resources · 73.5 MiB · 87 third-party 72.5 MiB over 1MB target
Image 66% · 48.2 MiB
Media 32% · 23.6 MiB
JavaScript 2% · 1.3 MiB
Font 0% · 230.5 KiB
CSS 0% · 154.2 KiB
Other 0% · 61.1 KiB
Document 0% · 26.1 KiB

~556.1 KiB of savings available

Remove unused JavaScript: 556.1 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: max-age=0, no-cache, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, no-cache, no-store

DirectiveValueMeaning
max-age0Cache for 0 seconds
no-cache—Cache but always revalidate first
no-store—Never cache this response
C
Image Optimization
Action
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Warning::
https://www.mastercard.com/content/dam/mccom/share... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.mastercard.com/content/dam/mccom/share... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19 images 48.2 MB
0 oversized -0 KB
8 legacy format
2 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

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
8 fonts (230 KB)
PASS
8 fonts (230 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

8

230 KB total

Render-blocking

0

of 8

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s 44.0 s 46.0 s 48.0 s 50.0 s 52.0 s 54.0 s 56.0 s 58.0 s 60.0 s 62.0 s 64.0 s 66.0 s 68.0 s 70.0 s 72.0 s 74.0 s 76.0 s 78.0 s 80.0 s 82.0 s 84.0 s 86.0 s 88.0 s 90.0 s 92.0 s 94.0 s 96.0 s 98.0 s 100.0 s 102.0 s 104.0 s 106.0 s 108.0 s 110.0 s 112.0 s 114.0 s 116.0 s 118.0 s 120.0 s 122.0 s 124.0 s 126.0 s 128.0 s 130.0 s 132.0 s 134.0 s 136.0 s 138.0 s 140.0 s 142.0 s FCP 5.8 s LCP 136.7 shttps://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/Mark-For-MC/MarkForMC-Med.woff2MarkForMC-Med.woff2 https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/Mark-For-MC/MarkForMC-Med.woff2 — 36.0 KiB — 56 ms — font-display: swaphttps://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/Mark-For-MC/MarkForMC-Bold.woff2MarkForMC-Bold.woff2 https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/Mark-For-MC/MarkForMC-Bold.woff2 — 35.7 KiB — 56 ms — font-display: swaphttps://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/mccom-icons/mccom-icons.ttf?52b978754a296525af296243cf902792mccom-icons.ttf https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/mccom-icons/mccom-icons.ttf?52b978754a296525af296243cf902792 — 6.6 KiB — 52 ms — font-display: swaphttps://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/Mark-For-MC/MarkForMC.woff2MarkForMC.woff2 https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/fonts/Mark-For-MC/MarkForMC.woff2 — 36.5 KiB — 58 ms — font-display: swaphttps://www.mastercard.com/content/dam/mccom/eu/greece/fonts/MarkForMC-Med.woff2MarkForMC-Med.woff2 https://www.mastercard.com/content/dam/mccom/eu/greece/fonts/MarkForMC-Med.woff2 — 36.7 KiB — 33 ms — font-display: swaphttps://www.mastercard.com/content/dam/mccom/eu/greece/fonts/MarkForMC.woff2MarkForMC.woff2 https://www.mastercard.com/content/dam/mccom/eu/greece/fonts/MarkForMC.woff2 — 37.2 KiB — 35 ms — font-display: swaphttps://www.mastercard.com/content/dam/mccom/eu/greece/fonts/MarkForMC-Bold.woff2MarkForMC-Bold.woff2 https://www.mastercard.com/content/dam/mccom/eu/greece/fonts/MarkForMC-Bold.woff2 — 36.5 KiB — 39 ms — font-display: swapdata:application/font-woff;charset=utf-8;base64,d09GRgABAAAAABUgAAsAAAAAItAAAQAAAAAAAAAAAAAAAAAAAAA…font-woff;charset=utf-8... data:application/font-woff;charset=utf-8;base64,d09GRgABAAAAABUgAAsAAAAAItAAAQAAAAAAAAAAAAAAAAAAAAA… — 5.3 KiB — 115 ms — font-display: swap
MarkForMC-Med.woff2 woff2 swap
Size 36 KB
Load time 56 ms
Start 868 ms
Risk FOUT — text flashes from fallback to web font
MarkForMC-Bold.woff2 woff2 swap
Size 36 KB
Load time 56 ms
Start 869 ms
Risk FOUT — text flashes from fallback to web font
mccom-icons.ttf ttf swap
Size 7 KB
Load time 52 ms
Start 869 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
MarkForMC.woff2 woff2 swap
Size 36 KB
Load time 58 ms
Start 869 ms
Risk FOUT — text flashes from fallback to web font
MarkForMC-Med.woff2 woff2 swap
Size 37 KB
Load time 33 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
MarkForMC.woff2 woff2 swap
Size 37 KB
Load time 35 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
MarkForMC-Bold.woff2 woff2 swap
Size 36 KB
Load time 39 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
font-woff;charset=utf-8... woff swap
Size 5 KB
Load time 115 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~4 KB and ~8 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
88 requests over 3927ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s 44.0 s 46.0 s 48.0 s 50.0 s 52.0 s 54.0 s 56.0 s 58.0 s 60.0 s 62.0 s 64.0 s 66.0 s 68.0 s 70.0 s 72.0 s 74.0 s 76.0 s 78.0 s 80.0 s 82.0 s 84.0 s 86.0 s 88.0 s 90.0 s 92.0 s 94.0 s 96.0 s 98.0 s 100.0 s 102.0 s 104.0 s 106.0 s 108.0 s 110.0 s 112.0 s 114.0 s 116.0 s 118.0 s 120.0 s 122.0 s 124.0 s 126.0 s 128.0 s 130.0 s 132.0 s 134.0 s 136.0 s 138.0 s 140.0 s 142.0 s FCP 5.8 s LCP 136.7 shttps://mastercard.us// https://mastercard.us/ — 301 — 1.1 KiB — 32 ms — h2https://www.mastercard.com/us/en.htmlwww.mastercard.com/us/en.html https://www.mastercard.com/us/en.html — 200 — 25.5 KiB — 33 ms — h2https://www.mastercard.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.jswww.mastercard.com/.rum/@adobe/heli... https://www.mastercard.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js — 200 — 1.0 KiB — 24 ms — h2https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-base.lc-c5165be5c7cf8eee0f5b6428a836d088-lc.min.csswww.mastercard.com/etc.clientlibs/m... https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-base.lc-c5165be5c7cf8eee0f5b6428a836d088-lc.min.css — 200 — 2.3 KiB — 48 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui.cssasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui.css — 200 — 18.6 KiB — 61 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/theme.cssasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/theme.css — 200 — 6.0 KiB — 35 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui.esm.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui.esm.js — 200 — 1.8 KiB — 41 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui-analytics.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui-analytics.js — 200 — 910 B — 36 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui-localStorage.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/forms-ui-localStorage.js — 200 — 1.2 KiB — 38 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — 200 — 9.1 KiB — 30 ms — h2https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-dependencies.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.jswww.mastercard.com/etc.clientlibs/m... https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-dependencies.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.js — 200 — 358 B — 68 ms — h2https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-dependencies.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.csswww.mastercard.com/etc.clientlibs/m... https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-dependencies.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.css — 200 — 347 B — 46 ms — h2https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-hooksInitialization.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.csswww.mastercard.com/etc.clientlibs/a... https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-hooksInitialization.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.css — 200 — 348 B — 48 ms — h2https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-algoliaext.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.csswww.mastercard.com/etc.clientlibs/m... https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-algoliaext.lc-d41d8cd98f00b204e9800998ecf8427e-lc.min.css — 200 — 347 B — 50 ms — h2https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-site.lc-9d117ada9da45246db1edb3ead027265-lc.min.csswww.mastercard.com/etc.clientlibs/a... https://www.mastercard.com/etc.clientlibs/algolia/clientlibs/clientlib-site.lc-9d117ada9da45246db1edb3ead027265-lc.min.css — 200 — 19.1 KiB — 56 ms — h2https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site.lc-bf9c327f30ca5f4fdfb20355f6a65cef-lc.min.csswww.mastercard.com/etc.clientlibs/m... https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site.lc-bf9c327f30ca5f4fdfb20355f6a65cef-lc.min.css — 200 — 100.9 KiB — 78 ms — h2https://www.mastercard.com/etc.clientlibs/core/wcm/components/page/v2/page/clientlibs/site/skiptomaincontent.lc-696ce9a06faa733b225ffb8c05f16db9-lc.min.csswww.mastercard.com/etc.clientlibs/c... https://www.mastercard.com/etc.clientlibs/core/wcm/components/page/v2/page/clientlibs/site/skiptomaincontent.lc-696ce9a06faa733b225ffb8c05f16db9-lc.min.css — 200 — 586 B — 63 ms — h2https://www.mastercard.com/content/dam/mccom/shared/header/ma_symbol.svgwww.mastercard.com/content/dam/mcco... https://www.mastercard.com/content/dam/mccom/shared/header/ma_symbol.svg — 200 — 910 B — 67 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--c471b0a1-c241-4d00-ac1d-2b2451510e91/br45724-mastercard-websiteimageryrefresh-solutions-1-1x1-ezgif-com-loop-count.gif?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--c471b0a1-c241-4d00-ac1d-2b2451510e91/br45724-mastercard-websiteimageryrefresh-solutions-1-1x1-ezgif-com-loop-count.gif?quality=82&preferwebp=true — 200 — 23.0 MiB — 1.4 s — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-ZQiyzviC.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-ZQiyzviC.js — 200 — 26.0 KiB — 32 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-Ct6sGP3H.jsasset.forms.mastercard.com/forms-ui... 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https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-e5ee2f6d.entry.js — 200 — 7.5 KiB — 8 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-c1322c8f.entry.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-c1322c8f.entry.js — 200 — 7.4 KiB — 10 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAQAElEQVR4AeycCXzVNbbHk3tbyl5AN…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAQAElEQVR4AeycCXzVNbbHk3tbyl5AN… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANS…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANS… — 200 — 0 B — 0 ms — datadata:application/font-woff;charset=utf-8;base64,d09GRgABAAAAABUgAAsAAAAAItAAAQAAAAAAAAAAAAAAAAAAAAA…data:application/font-woff;charset=... data:application/font-woff;charset=utf-8;base64,d09GRgABAAAAABUgAAsAAAAAItAAAQAAAAAAAAAAAAAAAAAAAAA… — 200 — 5.3 KiB — 115 ms — datahttps://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--9c3a3e49-0fb7-4f02-b590-8ef04015652c/shamina-world-bank.jpg?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--9c3a3e49-0fb7-4f02-b590-8ef04015652c/shamina-world-bank.jpg?quality=82&preferwebp=true — 200 — 113.1 KiB — 221 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--01abe707-fcd0-4c1d-a921-0a22e2f766d3/crypto-card-explanier-horizontal-pill.png?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--01abe707-fcd0-4c1d-a921-0a22e2f766d3/crypto-card-explanier-horizontal-pill.png?quality=82&preferwebp=true — 200 — 969.0 KiB — 233 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--bcd71f82-2c43-4641-a3be-14eccc486c25/mei-blog-larger-file.jpg?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--bcd71f82-2c43-4641-a3be-14eccc486c25/mei-blog-larger-file.jpg?quality=82&preferwebp=true — 200 — 138.8 KiB — 446 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--d73a04ae-35f0-47ff-973f-13d769d8e497/open-finance-horizontal-pill.jpg?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--d73a04ae-35f0-47ff-973f-13d769d8e497/open-finance-horizontal-pill.jpg?quality=82&preferwebp=true — 200 — 62.3 KiB — 235 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--c63c505c-a6b9-4cae-9ff9-22174d764a62/sustainable-tech-horizontal-pill.jpg?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--c63c505c-a6b9-4cae-9ff9-22174d764a62/sustainable-tech-horizontal-pill.jpg?quality=82&preferwebp=true — 200 — 269.4 KiB — 239 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--d46becfe-4262-4e2c-9cc6-609535d4af55/br45724-mastercard-websiteimageryrefresh-solutions-2-9x16-ezgif-com-loop-count.gif?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--d46becfe-4262-4e2c-9cc6-609535d4af55/br45724-mastercard-websiteimageryrefresh-solutions-2-9x16-ezgif-com-loop-count.gif?quality=82&preferwebp=true — 200 — 23.2 MiB — 1.3 s — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--31deb226-0992-429e-8fae-9bccb16fc665/br45724-mastercard-websiteimageryrefresh-solutions-4-1x1.jpg?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--31deb226-0992-429e-8fae-9bccb16fc665/br45724-mastercard-websiteimageryrefresh-solutions-4-1x1.jpg?quality=82&preferwebp=true — 200 — 48.7 KiB — 240 ms — h2https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--cb42b726-9398-4633-935e-78d37275c150/br45724-mastercard-websiteimageryrefresh-solutions-6-9x16.jpg?quality=82&preferwebp=truewww.mastercard.com/adobe/dynamicmed... https://www.mastercard.com/adobe/dynamicmedia/deliver/dm-aid--cb42b726-9398-4633-935e-78d37275c150/br45724-mastercard-websiteimageryrefresh-solutions-6-9x16.jpg?quality=82&preferwebp=true — 200 — 98.9 KiB — 330 ms — h2https://www.mastercard.com/content/dam/mccom/common/CaptionNotNeeded.vttwww.mastercard.com/content/dam/mcco... https://www.mastercard.com/content/dam/mccom/common/CaptionNotNeeded.vtt — 200 — 439 B — 160 ms — h2https://cdn.cookielaw.org/consent/019450cd-f80c-7afa-a290-1aa201d6acb1/019cbd56-b619-7206-b266-0d9f1e2ffbb5/en-us.jsoncdn.cookielaw.org/consent/019450cd-... https://cdn.cookielaw.org/consent/019450cd-f80c-7afa-a290-1aa201d6acb1/019cbd56-b619-7206-b266-0d9f1e2ffbb5/en-us.json — 200 — 34.7 KiB — 46 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-BnD91lSb.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-BnD91lSb.js — 200 — 1.5 KiB — 22 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-C3vcEZdJ.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-C3vcEZdJ.js — 200 — 40.3 KiB — 41 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-4OhmcLQX.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-4OhmcLQX.js — 200 — 2.9 KiB — 19 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-B85MJLTf.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-B85MJLTf.js — 200 — 561 B — 16 ms — h2https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-CqdmgBk0.jsasset.forms.mastercard.com/forms-ui... https://asset.forms.mastercard.com/forms-ui@v2.0.8/p-CqdmgBk0.js — 200 — 3.4 KiB — 22 ms — h2https://www.mastercard.com/content/dam/mccom/shared/homepage/videos/BR45724_MC_WebUnification_Opt8_9x16_V7.mp4www.mastercard.com/content/dam/mcco... https://www.mastercard.com/content/dam/mccom/shared/homepage/videos/BR45724_MC_WebUnification_Opt8_9x16_V7.mp4 — 206 — 23.6 MiB — 2.3 s — h2https://cdn.cookielaw.org/scripttemplates/202604.1.0/assets/otCenterRounded.jsoncdn.cookielaw.org/scripttemplates/2... https://cdn.cookielaw.org/scripttemplates/202604.1.0/assets/otCenterRounded.json — 200 — 3.0 KiB — 13 ms — h2https://cdn.cookielaw.org/scripttemplates/202604.1.0/assets/v2/otPcTab.jsoncdn.cookielaw.org/scripttemplates/2... https://cdn.cookielaw.org/scripttemplates/202604.1.0/assets/v2/otPcTab.json — 200 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h2https://cdn.cookielaw.org/logos/1df3f1e6-52a6-46c4-b5a1-0e035b09a859/c8f0ae6e-550f-49f2-bf8d-e209a37a96a7/2dc2e77e-31c9-4bf6-b310-d14722cbe9b4/MicrosoftTeams-image.pngcdn.cookielaw.org/logos/1df3f1e6-52... https://cdn.cookielaw.org/logos/1df3f1e6-52a6-46c4-b5a1-0e035b09a859/c8f0ae6e-550f-49f2-bf8d-e209a37a96a7/2dc2e77e-31c9-4bf6-b310-d14722cbe9b4/MicrosoftTeams-image.png — 200 — 27.2 KiB — 16 ms — h2https://cdn.cookielaw.org/logos/static/powered_by_logo.svgcdn.cookielaw.org/logos/static/powe... https://cdn.cookielaw.org/logos/static/powered_by_logo.svg — 200 — 2.7 KiB — 12 ms — h2blob:https://www.mastercard.com/279a70b1-fba2-4cd0-a994-6227772920bcwww.mastercard.com/279a70b1-fba2-4c... blob:https://www.mastercard.com/279a70b1-fba2-4cd0-a994-6227772920bc — -1 — 0 B — 0 ms — https://assets.adobedtm.com/acdc00762da2/83bdb98d95f8/b1ccace159e9/RCe48227830aa142f4a82079ac1bb152fc-source.min.jsassets.adobedtm.com/acdc00762da2/83... https://assets.adobedtm.com/acdc00762da2/83bdb98d95f8/b1ccace159e9/RCe48227830aa142f4a82079ac1bb152fc-source.min.js — 200 — 763 B — 8 ms — h2https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/icons/mastercard-favicon.svgwww.mastercard.com/etc.clientlibs/m... https://www.mastercard.com/etc.clientlibs/marts/clientlibs/clientlib-site/resources/icons/mastercard-favicon.svg — 200 — 920 B — 27 ms — h2https://www.mastercard.com/rysmLZ/l7F/tV8/4hUmLK2S/iYEYX4r97Oucr2Oz/IhkYIg/ShUxeHpN/GkkBwww.mastercard.com/rysmLZ/l7F/tV8/4... https://www.mastercard.com/rysmLZ/l7F/tV8/4hUmLK2S/iYEYX4r97Oucr2Oz/IhkYIg/ShUxeHpN/GkkB — 201 — 1.0 KiB — 231 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 12703ms · 1064KB · $169/mo
www.mastercard.com
Other
Costly
Execution 3613ms
Transfer 470 KB
Unused 49%
Monthly Cost $48/mo
Unattributable
Other
Costly
Execution 2928ms
Transfer 0 KB
Monthly Cost $39/mo
www.mastercard.com
Other
Costly
Execution 1563ms
Transfer 1 KB
Unused 20%
Monthly Cost $21/mo
asset.forms.mastercard.com
Other
Costly
Execution 1206ms
Transfer 26 KB
Monthly Cost $16/mo
www.mastercard.com
Other
Costly
Execution 747ms
Transfer 25 KB
Monthly Cost $10/mo
OneTrust
Consent
Essential
Execution 611ms
Transfer 131 KB
Unused 53%
Monthly Cost $8/mo
www.mastercard.com
Other
Costly
Execution 595ms
Transfer 255 KB
Unused 75%
Monthly Cost $8/mo
assets.adobedtm.com
Other
Costly
Execution 563ms
Transfer 89 KB
Unused 37%
Monthly Cost $7/mo
www.mastercard.com
Other
Costly
Execution 416ms
Transfer 9 KB
Monthly Cost $6/mo
www.mastercard.com
Other
Optional
Execution 103ms
Transfer 11 KB
Monthly Cost $1/mo
www.mastercard.com
Other
Optional
Execution 102ms
Transfer 29 KB
Monthly Cost $1/mo
OneTrust
Consent
Essential
Execution 99ms
Transfer 9 KB
Monthly Cost $1/mo
www.mastercard.com
Other
Optional
Execution 80ms
Transfer 1 KB
Monthly Cost $1/mo
www.mastercard.com
Other
Optional
Execution 75ms
Transfer 8 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.mastercard.com adds 3613ms and costs ~$48/month
  • Unattributable adds 2928ms and costs ~$39/month
  • www.mastercard.com adds 1563ms and costs ~$21/month
  • asset.forms.mastercard.com adds 1206ms and costs ~$16/month
  • www.mastercard.com adds 747ms and costs ~$10/month
  • www.mastercard.com adds 595ms and costs ~$8/month
  • assets.adobedtm.com adds 563ms and costs ~$7/month
  • www.mastercard.com adds 416ms and costs ~$6/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.mastercard.com takes 3613ms 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 2928ms 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.mastercard.com takes 1563ms 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

asset.forms.mastercard.com takes 1206ms 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.mastercard.com takes 747ms 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

53% of OneTrust'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

www.mastercard.com takes 595ms 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

75% of www.mastercard.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

assets.adobedtm.com takes 563ms 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.mastercard.com takes 416ms 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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