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https://tapad.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
3
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
82
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
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.
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.

1.12 s

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

2.34 s

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

19 ms

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

0.001

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

2.01 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.

2.34 s

Page Load Progression

510 ms
1.0 s
1.5 s
2.0 s
2.5 s
3.1 s
3.6 s
4.1 s
Checks
15
7 PASS 3 REVIEW 3 FIX
F
Page Weight Budget
Action
3.6 MB transferred, 43 requests
FIX
3.6 MB transferred, 43 requests
Warning::
Page weighs 4.6 MB (3.6 MB transferred)
Warning::
Images are 2.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.0 MB
Warning::
JavaScript is 862 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 862 KB
Info::
CSS is 305 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 305 KB
Info::
Fonts are 212 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 212 KB
Info::
43 HTTP requests
Info::
Estimated 0.76 g CO2 per page load
3.6 MB / 2.4 MB budget
3.6 MB transferred
43 requests
0.76 g CO2 per page load
Images 2.0 MiB 55%
JavaScript 861.8 KiB 23%
CSS 305.3 KiB 8%
Fonts 212.2 KiB 6%
Other 137.5 KiB 4%
Other 91.3 KiB 2%
HTML 60.8 KiB 2%
Other 396 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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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
JS Bundles
Action
13 scripts, 225 KB unused
FIX
13 scripts, 225 KB unused
Warning::
https://tapad.com/js/bundle.js?v=1690473096: 198 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tapad.com/js/bundle.js?v=1690473096: unminified — 152 KB could be saved
Warning::
https://platform-api.sharethis.com/js/sharethis.js: 27 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://platform-api.sharethis.com/js/sharethis.js: unminified — 14 KB could be saved
Info::
Total unused JavaScript: 225 KB
225 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://tapad.com/js/bundle.js?v=1690473096312 KB198 KB (63%)✗1st
https://platform-api.sharethis.com/js/sharethis.js47 KB27 KB (59%)✗3rd
https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/ScrollMagic.min.js6 KB—✓3rd
https://code.jquery.com/jquery-3.6.0.min.js31 KB—✓3rd
https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/plugins/debug.addIndicators.js6 KB—✗3rd
https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/plugins/animation.gsap.min.js1 KB—✓3rd
https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.js29 KB—✓3rd
https://assets.adobedtm.com/66064929b1d5/018656414211/launch-429be57a3c24.min.js16 KB—✓3rd
https://use.fontawesome.com/releases/v5.8.2/js/all.js405 KB—✓3rd
https://tapad.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3&ns=1&cb=11305630010 KB—✓1st

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

D
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
Info::
Last-Modified header present

No Cache-Control header

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

C
Image Optimization
Action
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Warning::
https://tapad.com/assets/images/former-cloudfront/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tapad.com/assets/images/former-cloudfront/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tapad.com/assets/images/former-cloudfront/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tapad.com/assets/images/singles/home/scrol... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tapad.com/assets/images/singles/logos/Tapa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
13 images 2.0 MB
0 oversized -0 KB
5 legacy format
6 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

Performance issues directly impact user engagement and conversion rates.

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

B
JS Execution Cost
859ms total JS execution
REVIEW
859ms total JS execution
Info::
https://tapad.com/: 235ms CPU time
Info::
Unattributable: 195ms CPU time
Info::
https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap...: 159ms CPU time
Info::
https://code.jquery.com/jquery-3.6.0.min.js: 128ms CPU time
Info::
https://use.fontawesome.com/releases/v5.8.2/js/all...: 88ms CPU time
Warning::
Third-party scripts: 570ms (66% of total)

Main Thread Breakdown

Other 46% Script Evaluation 22% Style & Layout 15% Script Parsing & Compilation 11% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://tapad.com/235ms8ms1ms1st
Unattributable195ms3ms0ms3rd
https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.js159ms16ms3ms3rd
https://code.jquery.com/jquery-3.6.0.min.js128ms92ms4ms3rd
https://use.fontawesome.com/releases/v5.8.2/js/all.js88ms20ms60ms3rd
https://tapad.com/js/bundle.js?v=169047309654ms30ms18ms1st
C
Page Weight Inventory
Action
43 resources · 3.6 MB · 225 KB savings available
REVIEW
43 resources · 3.6 MB · 225 KB savings available
Warning::
Page weight 2.6 MB over 1MB target
Got: 3.6 MB Expected: ≤ 1 MB
Info::
~225 KB of savings available
Info::
23 third-party resources (21% of weight)
Info::
4 resources over 200KB
43 resources · 3.6 MiB · 23 third-party 2.6 MiB over 1MB target
Image 55% · 2.0 MiB
JavaScript 23% · 861.8 KiB
CSS 8% · 305.3 KiB
Document 8% · 289.0 KiB
Font 6% · 212.2 KiB
Other 0% · 957 B

~224.7 KiB of savings available

Remove unused JavaScript: 224.7 KiB
A
Third-Party Impact
21% third-party, 0 ms blocking
PASS
21% third-party, 0 ms blocking
Info::
Third-party code accounts for 21% of page weight (767.4 KiB of 3.6 MiB)
Info::
Third-party blocking time is low (0 ms)
79%
21%
First-party Third-party
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 (212 KB)
PASS
4 fonts (212 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

212 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 500 ms 1.0 s 1.5 s 2.0 s FCP 1.1 s LCP 2.3 shttps://use.typekit.net/af/2cd6bf/00000000000000000001008f/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3l https://use.typekit.net/af/2cd6bf/00000000000000000001008f/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3 — 46.3 KiB — 19 ms — font-display: swaphttps://use.typekit.net/af/9b05f3/000000000000000000013365/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3l https://use.typekit.net/af/9b05f3/000000000000000000013365/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 50.6 KiB — 35 ms — font-display: swaphttps://use.typekit.net/af/ae4f6c/000000000000000000010096/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3l https://use.typekit.net/af/ae4f6c/000000000000000000010096/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3 — 73.1 KiB — 36 ms — font-display: swaphttps://use.typekit.net/af/309dfe/000000000000000000010091/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/309dfe/000000000000000000010091/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 42.3 KiB — 22 ms — font-display: swap
l woff2 swap
Size 46 KB
Load time 19 ms
Start 596 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 51 KB
Load time 35 ms
Start 597 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 73 KB
Load time 36 ms
Start 598 ms
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 42 KB
Load time 22 ms
Start 598 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

Network Waterfall
43 requests over 1746ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.1 s LCP 2.3 shttps://tapad.com// https://tapad.com/ — 200 — 60.8 KiB — 165 ms — h2https://use.typekit.net/pww8jaz.cssuse.typekit.net/pww8jaz.css https://use.typekit.net/pww8jaz.css — 200 — 975 B — 38 ms — h2https://cloud.typography.com/7583334/7611592/css/fonts.csscloud.typography.com/7583334/761159... https://cloud.typography.com/7583334/7611592/css/fonts.css — 200 — 248 B — 27 ms — http/1.1https://unpkg.com/aos@next/dist/aos.cssunpkg.com/aos@next/dist/aos.css https://unpkg.com/aos@next/dist/aos.css — 302 — 299 B — 46 ms — h3https://code.jquery.com/jquery-3.6.0.min.jscode.jquery.com/jquery-3.6.0.min.js https://code.jquery.com/jquery-3.6.0.min.js — 200 — 30.5 KiB — 36 ms — h2https://tapad.com/css/main.css?v=1690473096/css/main.css?v=1690473096 https://tapad.com/css/main.css?v=1690473096 — 200 — 301.2 KiB — 326 ms — h2https://tapad.com/assets/images/singles/home/scroller.svg/assets/images/singles/home/scrolle... https://tapad.com/assets/images/singles/home/scroller.svg — 200 — 1.9 KiB — 134 ms — h2https://tapad.com/assets/images/singles/logos/TapadExpStacked_purple.svg/assets/images/singles/logos/TapadE... https://tapad.com/assets/images/singles/logos/TapadExpStacked_purple.svg — 200 — 8.3 KiB — 146 ms — h3https://p.typekit.net/p.css?s=1&k=pww8jaz&ht=tk&f=10879.10881.10884.10886&a=5720174&app=typekit&e=cssp.typekit.net/p.css?s=1&k=pww8jaz&h... https://p.typekit.net/p.css?s=1&k=pww8jaz&ht=tk&f=10879.10881.10884.10886&a=5720174&app=typekit&e=css — 200 — 172 B — 9 ms — h2https://unpkg.com/aos@3.0.0-beta.6/dist/aos.cssunpkg.com/aos@3.0.0-beta.6/dist/aos... https://unpkg.com/aos@3.0.0-beta.6/dist/aos.css — 200 — 2.8 KiB — 17 ms — h3https://unpkg.com/aos@next/dist/aos.jsunpkg.com/aos@next/dist/aos.js https://unpkg.com/aos@next/dist/aos.js — 302 — 262 B — 30 ms — h3https://tapad.com/manifest.jsonjson?v=1/manifest.jsonjson?v=1 https://tapad.com/manifest.jsonjson?v=1 — 404 — 45.6 KiB — 144 ms — h3https://use.fontawesome.com/releases/v5.8.2/js/all.jsuse.fontawesome.com/releases/v5.8.2... https://use.fontawesome.com/releases/v5.8.2/js/all.js — 200 — 405.2 KiB — 103 ms — h2https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.jscdn.jsdelivr.net/npm/gsap@3.12.5/di... https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.js — 200 — 29.2 KiB — 66 ms — h2https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/ScrollMagic.min.jscdnjs.cloudflare.com/ajax/libs/Scro... https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/ScrollMagic.min.js — 200 — 6.0 KiB — 57 ms — h3https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/plugins/debug.addIndicators.jscdnjs.cloudflare.com/ajax/libs/Scro... https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/plugins/debug.addIndicators.js — 200 — 5.8 KiB — 56 ms — h3https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/plugins/animation.gsap.min.jscdnjs.cloudflare.com/ajax/libs/Scro... https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.8/plugins/animation.gsap.min.js — 200 — 1.3 KiB — 64 ms — h3https://platform-api.sharethis.com/js/sharethis.jsplatform-api.sharethis.com/js/share... https://platform-api.sharethis.com/js/sharethis.js — 200 — 46.9 KiB — 70 ms — h2https://assets.adobedtm.com/66064929b1d5/018656414211/launch-429be57a3c24.min.jsassets.adobedtm.com/66064929b1d5/01... https://assets.adobedtm.com/66064929b1d5/018656414211/launch-429be57a3c24.min.js — 200 — 16.3 KiB — 59 ms — h2https://insight.adsrvr.org/track/conv/?adv=mh6v0ck&ct=0:lsq9k3a&fmt=3insight.adsrvr.org/track/conv/?adv=... https://insight.adsrvr.org/track/conv/?adv=mh6v0ck&ct=0:lsq9k3a&fmt=3 — 200 — 149 B — 86 ms — h2https://tapad.com/js/bundle.js?v=1690473096/js/bundle.js?v=1690473096 https://tapad.com/js/bundle.js?v=1690473096 — 200 — 311.8 KiB — 181 ms — h3https://tapad.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3&ns=1&cb=1130563001/_Incapsula_Resource?SWJIYLWA=719d3... https://tapad.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3&ns=1&cb=1130563001 — 404 — 15 B — 138 ms — h3https://unpkg.com/aos@3.0.0-beta.6/dist/aos.jsunpkg.com/aos@3.0.0-beta.6/dist/aos... https://unpkg.com/aos@3.0.0-beta.6/dist/aos.js — 200 — 5.2 KiB — 36 ms — h3https://tapad.com/assets/images/singles/logos/TapadExpStacked_white.svg/assets/images/singles/logos/TapadE... https://tapad.com/assets/images/singles/logos/TapadExpStacked_white.svg — 200 — 8.2 KiB — 118 ms — h3https://tapad.com/assets/images/former-cloudfront/hero3_homepage.webp/assets/images/former-cloudfront/he... https://tapad.com/assets/images/former-cloudfront/hero3_homepage.webp — 200 — 1.8 MiB — 730 ms — h3https://tapad.com/assets/images/singles/home/IntroDividerBG.svg/assets/images/singles/home/IntroDi... https://tapad.com/assets/images/singles/home/IntroDividerBG.svg — 200 — 976 B — 125 ms — h3https://use.typekit.net/af/2cd6bf/00000000000000000001008f/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3use.typekit.net/af/2cd6bf/000000000... https://use.typekit.net/af/2cd6bf/00000000000000000001008f/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3 — 200 — 46.3 KiB — 19 ms — h2https://use.typekit.net/af/9b05f3/000000000000000000013365/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3use.typekit.net/af/9b05f3/000000000... https://use.typekit.net/af/9b05f3/000000000000000000013365/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n4&v=3 — 200 — 50.6 KiB — 35 ms — h2https://use.typekit.net/af/ae4f6c/000000000000000000010096/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3use.typekit.net/af/ae4f6c/000000000... https://use.typekit.net/af/ae4f6c/000000000000000000010096/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3 — 200 — 73.1 KiB — 36 ms — h2https://use.typekit.net/af/309dfe/000000000000000000010091/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3use.typekit.net/af/309dfe/000000000... https://use.typekit.net/af/309dfe/000000000000000000010091/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 200 — 42.3 KiB — 22 ms — h2
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.1 s LCP 2.3 shttps://tapad.com// https://tapad.com/ — 200 — 60.8 KiB — 165 ms — h2https://use.typekit.net/pww8jaz.cssuse.typekit.net/pww8jaz.css https://use.typekit.net/pww8jaz.css — 200 — 975 B — 38 ms — h2https://cloud.typography.com/7583334/7611592/css/fonts.csscloud.typography.com/7583334/761159... https://cloud.typography.com/7583334/7611592/css/fonts.css — 200 — 248 B — 27 ms — http/1.1https://unpkg.com/aos@next/dist/aos.cssunpkg.com/aos@next/dist/aos.css https://unpkg.com/aos@next/dist/aos.css — 302 — 299 B — 46 ms — h3https://code.jquery.com/jquery-3.6.0.min.jscode.jquery.com/jquery-3.6.0.min.js https://code.jquery.com/jquery-3.6.0.min.js — 200 — 30.5 KiB — 36 ms — h2https://tapad.com/css/main.css?v=1690473096/css/main.css?v=1690473096 https://tapad.com/css/main.css?v=1690473096 — 200 — 301.2 KiB — 326 ms — h2https://tapad.com/assets/images/singles/home/scroller.svg/assets/images/singles/home/scrolle... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
66% of JavaScript execution is third-party
First-party Third-party 570ms · 465KB · €6/mo
Unattributable
Other
Optional
Execution 195ms
Transfer 0 KB
Monthly Cost €2/mo
jsDelivr
CDN
Optional
Execution 159ms
Transfer 29 KB
Monthly Cost €2/mo
code.jquery.com
Other
Optional
Execution 128ms
Transfer 31 KB
Monthly Cost €1/mo
use.fontawesome.com
Other
Optional
Execution 88ms
Transfer 405 KB
Monthly Cost €1/mo

66% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

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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