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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
5
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
12
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
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.

3.35 s

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

6.58 s

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

3.17 s

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

0.695

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

6.85 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.

24.64 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
8 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
3.0 MB transferred, 165 requests
FIX
3.0 MB transferred, 165 requests
Warning::
Page weighs 9.7 MB (3.0 MB transferred)
Warning::
JavaScript is 2.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.0 MB
Warning::
165 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.63 g CO2 per page load
3.0 MB / 2.4 MB budget
3.0 MB transferred
165 requests
0.63 g CO2 per page load
JavaScript 2.0 MiB 68%
Images 671.8 KiB 22%
Other 93.9 KiB 3%
Fonts 90.8 KiB 3%
CSS 65.8 KiB 2%
HTML 33.7 KiB 1%
Other 27.8 KiB 1%
Other 11.5 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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

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 (3.0 MiB of 3.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
8340ms total JS execution
FIX
8340ms total JS execution
Warning::
https://www.popsci.com/: 1424ms CPU time
Warning::
Unattributable: 1392ms CPU time
Warning::
https://cdn.intergient.com/pageos/V.20260416.1/mai...: 984ms CPU time
Warning::
https://cdn.privacy-mgmt.com/unified/wrapperMessag...: 620ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MKV...: 536ms CPU time
Warning::
Third-party scripts: 8340ms (100% of total)

Main Thread Breakdown

Script Evaluation 63% Other 14% Script Parsing & Compilation 12% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://www.popsci.com/1424ms503ms10ms3rd
Unattributable1392ms359ms0ms3rd
https://cdn.intergient.com/pageos/V.20260416.1/main.121b53b8564b55f13382.js984ms861ms68ms3rd
https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js620ms552ms18ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MKVW68D536ms405ms119ms3rd
https://www.googletagmanager.com/gtag/js?id=G-P9C278278B&cx=c&gtm=4e64h1493ms426ms62ms3rd
https://cdn.intergient.com/prebid/prebid.05eaa3284c60ad6e334d.js341ms218ms94ms3rd
https://c.amazon-adsystem.com/aax2/apstag.js273ms215ms47ms3rd
https://btloader.com/tag?o=5150306120761344&upapi=true&ver=0.1248ms214ms25ms3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js242ms161ms76ms3rd

Showing top 10 of 27 scripts

F
JS Bundles
Action
59 scripts, 908 KB unused
FIX
59 scripts, 908 KB unused
Warning::
https://cdn.intergient.com/prebid/prebid.05eaa3284...: 136 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 130 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://imasdk.googleapis.com/js/sdkloader/ima3.js: 110 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.intergient.com/pageos/V.20260416.1/mai...: 92 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.bounceexchange.com/assets/smart-tag...: 86 KB unused (74%)
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://cdn.intergient.com/prebid/prebid.05eaa3284c60ad6e334d.js222 KB136 KB (62%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js188 KB130 KB (69%)✓3rd
https://imasdk.googleapis.com/js/sdkloader/ima3.js147 KB110 KB (75%)✓3rd
https://cdn.intergient.com/pageos/V.20260416.1/main.121b53b8564b55f13382.js172 KB92 KB (54%)✓3rd
https://assets.bounceexchange.com/assets/smart-tag/versioned/main-v2_567848e754a175dbe621932e8f6a1b7e.br.js116 KB86 KB (74%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-P9C278278B&cx=c&gtm=4e64h1170 KB66 KB (39%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MKVW68D157 KB60 KB (39%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-56LB8GM&gtm=4e64h1132 KB58 KB (44%)✓3rd
https://c.amazon-adsystem.com/aax2/apstag.js91 KB49 KB (54%)✓3rd
https://d2qlq4kdetaeuz.cloudfront.net/eyewise-id-module/eyewise-module-consent.js?token=dGVzdHRva2VuOg==64 KB42 KB (65%)✓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
165 resources · 3.0 MB · 908 KB savings available
FIX
165 resources · 3.0 MB · 908 KB savings available
Warning::
Page weight 2.0 MB over 1MB target
Got: 3.0 MB Expected: ≤ 1 MB
Info::
~908 KB of savings available
Warning::
164 third-party resources (100% of weight)
Info::
2 resources over 200KB
165 resources · 3.0 MiB · 164 third-party 2.0 MiB over 1MB target
JavaScript 68% · 2.0 MiB
Image 22% · 675.5 KiB
Other 4% · 125.5 KiB
Font 3% · 90.8 KiB
CSS 2% · 65.8 KiB
Document 1% · 34.1 KiB

~908.3 KiB of savings available

Remove unused JavaScript: 908.3 KiB
B
Image Optimization
14 images, 0 KB saveable
REVIEW
14 images, 0 KB saveable
Info::
All images are well-optimized
14 images 672 KB
0 oversized -0 KB
6 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 (91 KB)
PASS
4 fonts (91 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

91 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 4.0 s 5.0 s 6.0 s FCP 3.3 s LCP 6.6 shttps://fonts.gstatic.com/s/barlowcondensed/v13/HTx3L3I-JCGChYJ8VI-L6OO_au7B6xHT2lv0tKk.woff2HTx3L3I-JCGChYJ8VI-L6OO... https://fonts.gstatic.com/s/barlowcondensed/v13/HTx3L3I-JCGChYJ8VI-L6OO_au7B6xHT2lv0tKk.woff2 — 14.4 KiB — 19 ms — font-display: swaphttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 11 ms — font-display: swaphttps://fonts.gstatic.com/s/barlowcondensed/v13/HTxwL3I-JCGChYJ8VI-L6OO_au7B4873z3bWuYMBYro.woff2HTxwL3I-JCGChYJ8VI-L6OO... https://fonts.gstatic.com/s/barlowcondensed/v13/HTxwL3I-JCGChYJ8VI-L6OO_au7B4873z3bWuYMBYro.woff2 — 14.5 KiB — 13 ms — font-display: swaphttps://fonts.gstatic.com/s/barlowcondensed/v13/HTxwL3I-JCGChYJ8VI-L6OO_au7B46r2z3bWuYMBYro.woff2HTxwL3I-JCGChYJ8VI-L6OO... https://fonts.gstatic.com/s/barlowcondensed/v13/HTxwL3I-JCGChYJ8VI-L6OO_au7B46r2z3bWuYMBYro.woff2 — 14.6 KiB — 19 ms — font-display: swap
HTx3L3I-JCGChYJ8VI-L6OO... woff2 swap
Size 14 KB
Load time 19 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 11 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
HTxwL3I-JCGChYJ8VI-L6OO... woff2 swap
Size 15 KB
Load time 13 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
HTxwL3I-JCGChYJ8VI-L6OO... woff2 swap
Size 15 KB
Load time 19 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
12 hints, 0 missing preconnects
PASS
12 hints, 0 missing preconnects
Info::
Page uses 12 resource hint(s)

Current Resource Hints

preconnect
2
preload
4
dns-prefetch
6
prefetch
—

12 resource hints configured

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
A
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=3600

DirectiveValueMeaning
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
165 requests over 8535ms
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 FCP 3.3 s LCP 6.6 shttps://popsci.com// https://popsci.com/ — 301 — 159 B — 383 ms — h2https://www.popsci.com/www.popsci.com/ https://www.popsci.com/ — 200 — 27.6 KiB — 844 ms — h2https://www.popsci.com/wp-content/uploads/2021/03/06/pop-sci-logo-default.jpg?w=768&h=461www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2021/03/06/pop-sci-logo-default.jpg?w=768&h=461 — 200 — 5.1 KiB — 26 ms — h2https://www.popsci.com/_static/??/wp-content/client-mu-plugins/recurrent/dist/css/frontend.css,/wp-content/themes/popsci/css/app.css?m=1776790973www.popsci.com/_static/??/wp-conten... https://www.popsci.com/_static/??/wp-content/client-mu-plugins/recurrent/dist/css/frontend.css,/wp-content/themes/popsci/css/app.css?m=1776790973 — 200 — 52.6 KiB — 32 ms — h2https://fonts.googleapis.com/css2?family=Barlow+Condensed%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700%3B1%2C400%3B1%2C600%3B1%2C700&display=swap&ver=0.1.0fonts.googleapis.com/css2?family=Ba... https://fonts.googleapis.com/css2?family=Barlow+Condensed%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700%3B1%2C400%3B1%2C600%3B1%2C700&display=swap&ver=0.1.0 — 200 — 1.1 KiB — 126 ms — h2https://fonts.googleapis.com/css2?family=Inter%3Awght%40100..900&display=swap&ver=0.1.0fonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter%3Awght%40100..900&display=swap&ver=0.1.0 — 200 — 728 B — 170 ms — h2https://fonts.googleapis.com/css2?family=IBM+Plex+Mono%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700%3B1%2C400%3B1%2C600%3B1%2C700&display=swap&ver=0.1.0fonts.googleapis.com/css2?family=IB... https://fonts.googleapis.com/css2?family=IBM+Plex+Mono%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700%3B1%2C400%3B1%2C600%3B1%2C700&display=swap&ver=0.1.0 — 200 — 918 B — 128 ms — h2https://www.popsci.com/_static/??/wp-content/plugins/sailthru-widget/css/widget.subscribe.css,/wp-content/client-mu-plugins/recurrent/dist/css/youtube-lightbox.css?m=1776790973www.popsci.com/_static/??/wp-conten... https://www.popsci.com/_static/??/wp-content/plugins/sailthru-widget/css/widget.subscribe.css,/wp-content/client-mu-plugins/recurrent/dist/css/youtube-lightbox.css?m=1776790973 — 200 — 1.4 KiB — 17 ms — h2https://www.popsci.com/wp-content/plugins/nelio-ab-testing/assets/dist/js/visitor-type.js?m=1776790973gwww.popsci.com/wp-content/plugins/n... https://www.popsci.com/wp-content/plugins/nelio-ab-testing/assets/dist/js/visitor-type.js?m=1776790973g — 200 — 924 B — 16 ms — h2https://www.popsci.com/_static/??-eJx9zEEKgCAQheELZVMESYvoLFKDjehUOhLdPoMWrYIH/+bjwbkr4tnnBRO4siNjvN7Ugbh2qYI/pALZaAS/eN5YkAV2ny1xgmTIyxqzOmmxKM+HGFv0FMZW614PzaA7dwPBfTOZwww.popsci.com/_static/??-eJx9zEEKg... https://www.popsci.com/_static/??-eJx9zEEKgCAQheELZVMESYvoLFKDjehUOhLdPoMWrYIH/+bjwbkr4tnnBRO4siNjvN7Ugbh2qYI/pALZaAS/eN5YkAV2ny1xgmTIyxqzOmmxKM+HGFv0FMZW614PzaA7dwPBfTOZ — 200 — 35.0 KiB — 30 ms — h2https://experiments.parsely.com/vip-experiments.js?apiKey=popsci.com&ver=3.23.1experiments.parsely.com/vip-experim... https://experiments.parsely.com/vip-experiments.js?apiKey=popsci.com&ver=3.23.1 — 200 — 8.9 KiB — 37 ms — h2https://www.popsci.com/wp-content/plugins/sailthru-widget/js/widget.subscribe.min.js?m=1776790973gwww.popsci.com/wp-content/plugins/s... https://www.popsci.com/wp-content/plugins/sailthru-widget/js/widget.subscribe.min.js?m=1776790973g — 200 — 822 B — 28 ms — h2https://www.popsci.com/wp-content/uploads/2024/06/Popsci-nav-logo.svg?quality=85www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2024/06/Popsci-nav-logo.svg?quality=85 — 200 — 3.0 KiB — 22 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/Curiosity-Mars-Selfie.jpg?w=660&h=371www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2026/04/Curiosity-Mars-Selfie.jpg?w=660&h=371 — 200 — 43.2 KiB — 26 ms — h2https://www.popsci.com/wp-content/uploads/2024/05/Nav-logo.svg?quality=85www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2024/05/Nav-logo.svg?quality=85 — 200 — 3.0 KiB — 6 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/logoff.jpg?w=768&h=432www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2026/04/logoff.jpg?w=768&h=432 — 200 — 17.9 KiB — 7 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/bruce-parrot-lead.png?w=768&h=432www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2026/04/bruce-parrot-lead.png?w=768&h=432 — 200 — 482.8 KiB — 23 ms — h2https://www.popsci.com/wp-content/client-mu-plugins/recurrent/dist/js/frontend.js?m=1776790968gwww.popsci.com/wp-content/client-mu... https://www.popsci.com/wp-content/client-mu-plugins/recurrent/dist/js/frontend.js?m=1776790968g — 200 — 19.7 KiB — 24 ms — h2https://www.popsci.com/wp-content/themes/recurrent-base/js/app.js?ver=1776790973www.popsci.com/wp-content/themes/re... https://www.popsci.com/wp-content/themes/recurrent-base/js/app.js?ver=1776790973 — 200 — 23.3 KiB — 12 ms — h2https://www.popsci.com/wp-content/client-mu-plugins/recurrent/dist/js/youtube-lightbox.js?m=1776790968gwww.popsci.com/wp-content/client-mu... https://www.popsci.com/wp-content/client-mu-plugins/recurrent/dist/js/youtube-lightbox.js?m=1776790968g — 200 — 7.9 KiB — 9 ms — h2https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.jscdn.privacy-mgmt.com/unified/wrappe... https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js — 200 — 42.0 KiB — 32 ms — h2https://www.popsci.com/wp-content/uploads/2021/01/28/popsci_logo-horizontal-white.svg?quality=85&w=128&h=28&crop=1www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2021/01/28/popsci_logo-horizontal-white.svg?quality=85&w=128&h=28&crop=1 — 200 — 1.5 KiB — 15 ms — h2https://btloader.com/tag?o=5150306120761344&upapi=true&ver=0.1btloader.com/tag?o=5150306120761344... https://btloader.com/tag?o=5150306120761344&upapi=true&ver=0.1 — 302 — 235 B — 144 ms — h2https://stats.wp.com/e-202617.jsstats.wp.com/e-202617.js https://stats.wp.com/e-202617.js — 200 — 1.7 KiB — 22 ms — h2https://cdn.intergient.com/1025364/75188/ramp.jscdn.intergient.com/1025364/75188/ra... https://cdn.intergient.com/1025364/75188/ramp.js — 200 — 11.4 KiB — 62 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-MKVW68Dwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-MKVW68D — 200 — 156.5 KiB — 268 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/anker-charging-deals-amazon-spring.jpg?w=580&h=348www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2026/04/anker-charging-deals-amazon-spring.jpg?w=580&h=348 — 200 — 23.5 KiB — 5 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/rei-bag-sale-header.jpg?w=580&h=348www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2026/04/rei-bag-sale-header.jpg?w=580&h=348 — 200 — 35.9 KiB — 9 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/Under-Armour-Velociti-3-stacks-stacked-hero.jpg?w=580&h=387www.popsci.com/wp-content/uploads/2... https://www.popsci.com/wp-content/uploads/2026/04/Under-Armour-Velociti-3-stacks-stacked-hero.jpg?w=580&h=387 — 200 — 19.8 KiB — 14 ms — h2https://www.popsci.com/wp-content/uploads/2026/04/PINTER__Home_Brewers.jpg?w=533&h=404www.popsci.com/wp-content/uploads/2... 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h2https://assets.bounceexchange.com/assets/smart-tag/versioned/cjs_min_92abedfd1b9757a428bfcd7452d0081f.jsassets.bounceexchange.com/assets/sm... https://assets.bounceexchange.com/assets/smart-tag/versioned/cjs_min_92abedfd1b9757a428bfcd7452d0081f.js — 200 — 16.0 KiB — 18 ms — h2https://assets.bounceexchange.com/assets/smart-tag/versioned/onsite-v2_1238d00d70e4de87443df9eb69ff1a61.br.jsassets.bounceexchange.com/assets/sm... https://assets.bounceexchange.com/assets/smart-tag/versioned/onsite-v2_1238d00d70e4de87443df9eb69ff1a61.br.js — 200 — 5.4 KiB — 9 ms — h3https://assets.bounceexchange.com/assets/smart-tag/versioned/ads-v2_b6cef0b913934dd366917842fede7baa.br.jsassets.bounceexchange.com/assets/sm... https://assets.bounceexchange.com/assets/smart-tag/versioned/ads-v2_b6cef0b913934dd366917842fede7baa.br.js — 200 — 41.7 KiB — 13 ms — h3https://rtb.openx.net/openrtbb/prebidjsrtb.openx.net/openrtbb/prebidjs https://rtb.openx.net/openrtbb/prebidjs — 200 — 243 B — 206 ms — h2https://assets.bounceexchange.com/cache/7822/website-24620e3c8993cf96b4a59d40e8dfe04e.jsassets.bounceexchange.com/cache/782... https://assets.bounceexchange.com/cache/7822/website-24620e3c8993cf96b4a59d40e8dfe04e.js — 200 — 2.1 KiB — 11 ms — h3https://pogo.ccgateway.net/v1/p/5bb3e20859/classification?url=https%3A%2F%2Fwww.popsci.com%2Fpogo.ccgateway.net/v1/p/5bb3e20859/... https://pogo.ccgateway.net/v1/p/5bb3e20859/classification?url=https%3A%2F%2Fwww.popsci.com%2F — 200 — 266 B — 384 ms — h2https://script-api.ccgateway.net/1/userIdscript-api.ccgateway.net/1/userId https://script-api.ccgateway.net/1/userId — 200 — 705 B — 164 ms — h2https://script-api.ccgateway.net/script/launcher/2/user.jsscript-api.ccgateway.net/script/lau... https://script-api.ccgateway.net/script/launcher/2/user.js — 200 — 677 B — 166 ms — h2https://script-api.ccgateway.net/script/launcher/1/customevents.jsscript-api.ccgateway.net/script/lau... https://script-api.ccgateway.net/script/launcher/1/customevents.js — 200 — 1.7 KiB — 162 ms — h2https://script-api.ccgateway.net/script/launcher/6/api.jsscript-api.ccgateway.net/script/lau... https://script-api.ccgateway.net/script/launcher/6/api.js — 200 — 1.5 KiB — 159 ms — h2https://gum.criteo.com/sid/json?origin=prebid&topUrl=https%3A%2F%2Fwww.popsci.com%2F&domain=www.popsci.com&cw=1&lsw=1&gpp=DBAA&gpp_sid=-1gum.criteo.com/sid/json?origin=preb... https://gum.criteo.com/sid/json?origin=prebid&topUrl=https%3A%2F%2Fwww.popsci.com%2F&domain=www.popsci.com&cw=1&lsw=1&gpp=DBAA&gpp_sid=-1 — 302 — 809 B — 387 ms — h2https://cd836371f1d.cdn.intergient.com/fb87a4ea41cd836371f1d.cdn.intergient.com/fb87... https://cd836371f1d.cdn.intergient.com/fb87a4ea41 — 200 — 96 B — 378 ms — h2https://launchpad-wrapper.privacymanager.io/ca935c17-544f-477e-88cb-4288124e4d61/launchpad-liveramp.jslaunchpad-wrapper.privacymanager.io... https://launchpad-wrapper.privacymanager.io/ca935c17-544f-477e-88cb-4288124e4d61/launchpad-liveramp.js — 200 — 8.8 KiB — 20 ms — h2https://ps.eyeota.net/pixel/bounce/?pid=m51mh00&t=ajs&uid=user_a92ba101-d2fd-401b-9416-08b4d447cbd7_1776802665046ps.eyeota.net/pixel/bounce/?pid=m51... https://ps.eyeota.net/pixel/bounce/?pid=m51mh00&t=ajs&uid=user_a92ba101-d2fd-401b-9416-08b4d447cbd7_1776802665046 — 200 — 1.1 KiB — 124 ms — http/1.1https://launchpad.privacymanager.io/latest/launchpad.bundle.jslaunchpad.privacymanager.io/latest/... https://launchpad.privacymanager.io/latest/launchpad.bundle.js — 200 — 45.4 KiB — 19 ms — h2https://rp.liadm.com/j?dtstmp=1776802665815&did=did-0046&se=e30&duid=1201ed3df6d6--01kprv24tyr5kf3wvy73qyng58&tv=10.23.0&pu=https%3A%2F%2Fwww.popsci.com%2F&wpn=prebid&gpp_s=DBAA&gpp_as=-1&cd=.popsci.comrp.liadm.com/j?dtstmp=1776802665815... https://rp.liadm.com/j?dtstmp=1776802665815&did=did-0046&se=e30&duid=1201ed3df6d6--01kprv24tyr5kf3wvy73qyng58&tv=10.23.0&pu=https%3A%2F%2Fwww.popsci.com%2F&wpn=prebid&gpp_s=DBAA&gpp_as=-1&cd=.popsci.com — 302 — 455 B — 466 ms — h2https://geo.privacymanager.io/geo.privacymanager.io/ https://geo.privacymanager.io/ — 200 — 0 B — 204 ms — h2https://script-api.ccgateway.net/setUser?parent=5bb3e20859&site=www.popsci.com&ccuid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&ccsid=2600af66-7f4a-46ba-82df-31a3a28e06c4script-api.ccgateway.net/setUser?pa... https://script-api.ccgateway.net/setUser?parent=5bb3e20859&site=www.popsci.com&ccuid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&ccsid=2600af66-7f4a-46ba-82df-31a3a28e06c4 — 200 — 360 B — 125 ms — h2https://script-api.ccgateway.net/script/bundle?id=www.popsci.com&parentId=5bb3e20859script-api.ccgateway.net/script/bun... https://script-api.ccgateway.net/script/bundle?id=www.popsci.com&parentId=5bb3e20859 — 200 — 4.7 KiB — 125 ms — h2https://d2qlq4kdetaeuz.cloudfront.net/eyewise-id-module/eyewise-module-consent.js?token=dGVzdHRva2VuOg==d2qlq4kdetaeuz.cloudfront.net/eyewi... https://d2qlq4kdetaeuz.cloudfront.net/eyewise-id-module/eyewise-module-consent.js?token=dGVzdHRva2VuOg== — 200 — 64.2 KiB — 29 ms — h2https://id5-sync.com/api/config/prebidid5-sync.com/api/config/prebid https://id5-sync.com/api/config/prebid — 200 — 448 B — 625 ms — h2https://lb.eu-1-id5-sync.com/lb/v1lb.eu-1-id5-sync.com/lb/v1 https://lb.eu-1-id5-sync.com/lb/v1 — 200 — 324 B — 644 ms — h2https://pb-ing-02.ccgateway.net/v1.0/parent/5bb3e20859/engagement/trigger/page_visitpb-ing-02.ccgateway.net/v1.0/parent... https://pb-ing-02.ccgateway.net/v1.0/parent/5bb3e20859/engagement/trigger/page_visit — -1 — 0 B — 0 ms — https://pb-ing-02.ccgateway.net/v1.0/parent/5bb3e20859/engagement/trigger/page_visitpb-ing-02.ccgateway.net/v1.0/parent... https://pb-ing-02.ccgateway.net/v1.0/parent/5bb3e20859/engagement/trigger/page_visit — 204 — 0 B — 611 ms — h2https://sync.crwdcntrl.net/qmap?c=18513&tp=MGNI&tpid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&d=https%3A%2F%2Fpb-ing-02.ccgateway.net%2Fv1.0%2Fparent%2F5bb3e20859%2Fengagement%2Ftrigger%2Fuser_sync%3Fsrc%3Dlotame%26puid%3D$%7Bprofile_id%7D%26id%3Dwww.popsci.com%26parentId%3D5bb3e20859%26ccsid%3D2600af66-7f4a-46ba-82df-31a3a28e06c4%26ccuid%3De760aaf9-e949-43f0-bd98-4ee0b99465b9%26ccpt%3D0%26pvid%3Dcdae9c38-d07d-472b-88ef-227597bcc06d%26engid%3D637e7f75-6343-403a-b404-affc53b3aedc%26engcount%3D0%26engttl%3D60sync.crwdcntrl.net/qmap?c=18513&tp=... https://sync.crwdcntrl.net/qmap?c=18513&tp=MGNI&tpid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&d=https%3A%2F%2Fpb-ing-02.ccgateway.net%2Fv1.0%2Fparent%2F5bb3e20859%2Fengagement%2Ftrigger%2Fuser_sync%3Fsrc%3Dlotame%26puid%3D$%7Bprofile_id%7D%26id%3Dwww.popsci.com%26parentId%3D5bb3e20859%26ccsid%3D2600af66-7f4a-46ba-82df-31a3a28e06c4%26ccuid%3De760aaf9-e949-43f0-bd98-4ee0b99465b9%26ccpt%3D0%26pvid%3Dcdae9c38-d07d-472b-88ef-227597bcc06d%26engid%3D637e7f75-6343-403a-b404-affc53b3aedc%26engcount%3D0%26engttl%3D60 — 302 — 600 B — 14 ms — h2https://sync.crwdcntrl.net/qmap?c=18513&tp=MGNI&tpid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&d=https%3A%2F%2Fpb-ing-02.ccgateway.net%2Fv1.0%2Fparent%2F5bb3e20859%2Fengagement%2Ftrigger%2Fuser_sync%3Fsrc%3Dlotame%26puid%3D$%7Bprofile_id%7D%26id%3Dwww.popsci.com%26parentId%3D5bb3e20859%26ccsid%3D2600af66-7f4a-46ba-82df-31a3a28e06c4%26ccuid%3De760aaf9-e949-43f0-bd98-4ee0b99465b9%26ccpt%3D0%26pvid%3Dcdae9c38-d07d-472b-88ef-227597bcc06d%26engid%3D637e7f75-6343-403a-b404-affc53b3aedc%26engcount%3D0%26engttl%3D60&ct=ysync.crwdcntrl.net/qmap?c=18513&tp=... https://sync.crwdcntrl.net/qmap?c=18513&tp=MGNI&tpid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&d=https%3A%2F%2Fpb-ing-02.ccgateway.net%2Fv1.0%2Fparent%2F5bb3e20859%2Fengagement%2Ftrigger%2Fuser_sync%3Fsrc%3Dlotame%26puid%3D$%7Bprofile_id%7D%26id%3Dwww.popsci.com%26parentId%3D5bb3e20859%26ccsid%3D2600af66-7f4a-46ba-82df-31a3a28e06c4%26ccuid%3De760aaf9-e949-43f0-bd98-4ee0b99465b9%26ccpt%3D0%26pvid%3Dcdae9c38-d07d-472b-88ef-227597bcc06d%26engid%3D637e7f75-6343-403a-b404-affc53b3aedc%26engcount%3D0%26engttl%3D60&ct=y — 302 — 440 B — 9 ms — h2https://pb-ing-02.ccgateway.net/v1.0/parent/5bb3e20859/engagement/trigger/user_sync?src=lotame&puid=a2cd433988d3244efb1b32b12ebb174f&id=www.popsci.com&parentId=5bb3e20859&ccsid=2600af66-7f4a-46ba-82df-31a3a28e06c4&ccuid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&ccpt=0&pvid=cdae9c38-d07d-472b-88ef-227597bcc06d&engid=637e7f75-6343-403a-b404-affc53b3aedc&engcount=0&engttl=60pb-ing-02.ccgateway.net/v1.0/parent... https://pb-ing-02.ccgateway.net/v1.0/parent/5bb3e20859/engagement/trigger/user_sync?src=lotame&puid=a2cd433988d3244efb1b32b12ebb174f&id=www.popsci.com&parentId=5bb3e20859&ccsid=2600af66-7f4a-46ba-82df-31a3a28e06c4&ccuid=e760aaf9-e949-43f0-bd98-4ee0b99465b9&ccpt=0&pvid=cdae9c38-d07d-472b-88ef-227597bcc06d&engid=637e7f75-6343-403a-b404-affc53b3aedc&engcount=0&engttl=60 — 200 — 155 B — 579 ms — h2https://geo.privacymanager.io/geo.privacymanager.io/ https://geo.privacymanager.io/ — 200 — 428 B — 4 ms — h2https://mug.criteo.com/sid?cpp=Lmp5U3xtekJZMktGb1BvSlVFQzhVaDlGRFY3eTgyZjJYazhFMXhOWlNJUWdTUmhhWE10NWpUS0FJUmJDbUxNcWRCSkFzOHlQa1VjRnM5MEFxTUhlUnNMbVp1ZFJ2TitYdlVzRFVyNzZoZHUvZk5VcS9aak9mSzgzVnpqT0NjT1NETmNMSlJzOUh2M0svKzlBV3BQanpxZjFxMU10OUtrd3ZGbjQ5VjVWZ00zT1JHODhVTG1PZlJzU3d4czJhdlpkU3pHY0ZqbU11aFFyOEVmcnk4Z3ZUSUpZZldGRUh5T3BWcDJvTzVhZ3ZLV0F4c3R3NEZOUHBSWU1UbHVQZ0FkZU4yZFk2fA&cppv=2mug.criteo.com/sid?cpp=Lmp5U3xtekJZ... https://mug.criteo.com/sid?cpp=Lmp5U3xtekJZMktGb1BvSlVFQzhVaDlGRFY3eTgyZjJYazhFMXhOWlNJUWdTUmhhWE10NWpUS0FJUmJDbUxNcWRCSkFzOHlQa1VjRnM5MEFxTUhlUnNMbVp1ZFJ2TitYdlVzRFVyNzZoZHUvZk5VcS9aak9mSzgzVnpqT0NjT1NETmNMSlJzOUh2M0svKzlBV3BQanpxZjFxMU10OUtrd3ZGbjQ5VjVWZ00zT1JHODhVTG1PZlJzU3d4czJhdlpkU3pHY0ZqbU11aFFyOEVmcnk4Z3ZUSUpZZldGRUh5T3BWcDJvTzVhZ3ZLV0F4c3R3NEZOUHBSWU1UbHVQZ0FkZU4yZFk2fA&cppv=2 — -1 — 0 B — 0 ms — https://mug.criteo.com/sid?cpp=Lmp5U3xtekJZMktGb1BvSlVFQzhVaDlGRFY3eTgyZjJYazhFMXhOWlNJUWdTUmhhWE10NWpUS0FJUmJDbUxNcWRCSkFzOHlQa1VjRnM5MEFxTUhlUnNMbVp1ZFJ2TitYdlVzRFVyNzZoZHUvZk5VcS9aak9mSzgzVnpqT0NjT1NETmNMSlJzOUh2M0svKzlBV3BQanpxZjFxMU10OUtrd3ZGbjQ5VjVWZ00zT1JHODhVTG1PZlJzU3d4czJhdlpkU3pHY0ZqbU11aFFyOEVmcnk4Z3ZUSUpZZldGRUh5T3BWcDJvTzVhZ3ZLV0F4c3R3NEZOUHBSWU1UbHVQZ0FkZU4yZFk2fA&cppv=2mug.criteo.com/sid?cpp=Lmp5U3xtekJZ... 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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
100% of JavaScript execution is third-party
First-party Third-party 8340ms · 1833KB · $111/mo
www.popsci.com
Other
Costly
Execution 1424ms
Transfer 28 KB
Monthly Cost $19/mo
Unattributable
Other
Costly
Execution 1392ms
Transfer 0 KB
Monthly Cost $18/mo
cdn.intergient.com
Other
Costly
Execution 984ms
Transfer 172 KB
Unused 54%
Monthly Cost $13/mo
cdn.privacy-mgmt.com
Other
Costly
Execution 620ms
Transfer 42 KB
Monthly Cost $8/mo
Google Tag Manager
Tag Manager
Costly
Execution 536ms
Transfer 157 KB
Unused 39%
Monthly Cost $7/mo
Google Tag Manager
Tag Manager
Costly
Execution 493ms
Transfer 170 KB
Unused 39%
Monthly Cost $7/mo
cdn.intergient.com
Other
Costly
Execution 341ms
Transfer 222 KB
Unused 62%
Monthly Cost $5/mo
c.amazon-adsystem.com
Other
Costly
Execution 273ms
Transfer 91 KB
Unused 54%
Monthly Cost $4/mo
btloader.com
Other
Costly
Execution 248ms
Transfer 0 KB
Monthly Cost $3/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 242ms
Transfer 188 KB
Unused 69%
Monthly Cost $3/mo
assets.bounceexchange.com
Other
Costly
Execution 224ms
Transfer 116 KB
Unused 74%
Monthly Cost $3/mo
cdn.privacy-mgmt.com
Other
Optional
Execution 180ms
Transfer 42 KB
Unused 51%
Monthly Cost $2/mo
launchpad-wrapper.privacymanager.io
Other
Optional
Execution 138ms
Transfer 9 KB
Monthly Cost $2/mo
imasdk.googleapis.com
Other
Optional
Execution 137ms
Transfer 147 KB
Unused 75%
Monthly Cost $2/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 133ms
Transfer 34 KB
Monthly Cost $2/mo
assets.bounceexchange.com
Other
Optional
Execution 124ms
Transfer 42 KB
Unused 81%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 112ms
Transfer 132 KB
Unused 44%
Monthly Cost $1/mo
www.popsci.com
Other
Optional
Execution 98ms
Transfer 23 KB
Monthly Cost $1/mo
cdn.intergient.com
Other
Optional
Execution 87ms
Transfer 1 KB
Monthly Cost $1/mo
d2qlq4kdetaeuz.cloudfront.net
Other
Optional
Execution 85ms
Transfer 64 KB
Unused 65%
Monthly Cost $1/mo
config.aps.amazon-adsystem.com
Other
Optional
Execution 82ms
Transfer 4 KB
Monthly Cost $1/mo
www.popsci.com
Other
Optional
Execution 81ms
Transfer 35 KB
Unused 66%
Monthly Cost $1/mo
cdn.privacy-mgmt.com
Other
Optional
Execution 71ms
Transfer 29 KB
Monthly Cost $1/mo
tags.crwdcntrl.net
Other
Optional
Execution 62ms
Transfer 13 KB
Monthly Cost $1/mo
www.popsci.com
Other
Optional
Execution 61ms
Transfer 20 KB
Monthly Cost $1/mo
launchpad.privacymanager.io
Other
Optional
Execution 59ms
Transfer 45 KB
Monthly Cost $1/mo
www.popsci.com
Other
Optional
Execution 53ms
Transfer 8 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.popsci.com adds 1424ms and costs ~$19/month
  • Unattributable adds 1392ms and costs ~$18/month
  • cdn.intergient.com adds 984ms and costs ~$13/month
  • cdn.privacy-mgmt.com adds 620ms and costs ~$8/month
  • Google Tag Manager adds 536ms and costs ~$7/month
  • Google Tag Manager adds 493ms and costs ~$7/month
  • cdn.intergient.com adds 341ms and costs ~$5/month
  • c.amazon-adsystem.com adds 273ms and costs ~$4/month
  • btloader.com adds 248ms and costs ~$3/month
  • securepubads.g.doubleclick.net adds 242ms and costs ~$3/month
  • assets.bounceexchange.com adds 224ms and costs ~$3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.popsci.com takes 1424ms 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 1392ms 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

cdn.intergient.com takes 984ms 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

54% of cdn.intergient.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

cdn.privacy-mgmt.com takes 620ms 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

Google Tag Manager takes 536ms 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

Google Tag Manager takes 493ms 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

cdn.intergient.com takes 341ms 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

62% of cdn.intergient.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

c.amazon-adsystem.com takes 273ms 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

54% of c.amazon-adsystem.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

btloader.com takes 248ms 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

securepubads.g.doubleclick.net takes 242ms 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

69% of securepubads.g.doubleclick.net'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.bounceexchange.com takes 224ms 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

74% of assets.bounceexchange.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

51% of cdn.privacy-mgmt.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

75% of imasdk.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

81% of assets.bounceexchange.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

65% of d2qlq4kdetaeuz.cloudfront.net'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

66% of www.popsci.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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