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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
68
GRADE
D
FIX
6
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
58
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
80
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.14 s

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

2.05 s

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

639 ms

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

0.039

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

2.37 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

3.42 s

Page Load Progression

711 ms
1.4 s
2.1 s
2.8 s
3.6 s
4.3 s
5.0 s
5.7 s
Checks
15
5 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
5.7 MB transferred, 65 requests
FIX
5.7 MB transferred, 65 requests
Critical::
Page weighs 10.4 MB (5.7 MB transferred)
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Info::
65 HTTP requests
Info::
Estimated 1.2 g CO2 per page load
5.7 MB / 2.4 MB budget
5.7 MB transferred
65 requests
1.2 g CO2 per page load
Other 2.9 MiB 51%
JavaScript 1.4 MiB 25%
Images 983.1 KiB 17%
Other 130.2 KiB 2%
Fonts 97.8 KiB 2%
CSS 88.0 KiB 2%
Other 61.4 KiB 1%
HTML 47.5 KiB 1%
Other 747 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

D
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 (5.7 MiB of 5.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2382ms total JS execution
FIX
2382ms total JS execution
Warning::
https://aip.brightspotcdn.com/resource/00000187-94...: 372ms CPU time
Warning::
https://cmp.osano.com/Azytm7SGW0qsW1JZP/38b32bde-4...: 345ms CPU time
Warning::
https://www.aip.org/: 318ms CPU time
Warning::
Unattributable: 281ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-948...: 251ms CPU time
Warning::
Third-party scripts: 2382ms (100% of total)

Main Thread Breakdown

Script Evaluation 51% Other 16% Style & Layout 14% Script Parsing & Compilation 12%
ScriptTotalScriptingParse/CompileParty
https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/styles/default/All.min.a1f7489c8aedaf4157ffb033f8cf83f5.gz.js372ms137ms22ms3rd
https://cmp.osano.com/Azytm7SGW0qsW1JZP/38b32bde-4e90-474d-96dc-85fbb11abfe3/osano.js345ms287ms13ms3rd
https://www.aip.org/318ms4ms1ms3rd
Unattributable281ms5ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-948800938&cx=c&gtm=4e64h1251ms196ms35ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-K9S7D3L231ms208ms19ms3rd
https://www.googletagmanager.com/gtag/js?id=G-VRD9E9H20K&cx=c&gtm=4e64h1188ms148ms25ms3rd
https://www.aip.org/vendor/AIP-Noto/tex-mml-chtml-aip-noto.js165ms76ms89ms3rd
https://www.aip.org/vendor/AIP-Noto/svg.js164ms105ms58ms3rd
https://connect.facebook.net/en_US/bundle/sdk.js/68ms55ms12ms3rd
F
JS Bundles
Action
20 scripts, 532 KB unused
FIX
20 scripts, 532 KB unused
Warning::
https://www.aip.org/vendor/AIP-Noto/tex-mml-chtml-...: 142 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://aip.brightspotcdn.com/resource/00000187-94...: 85 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-VRD9...: 74 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-948...: 60 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-K9S...: 56 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 532 KB
532 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.aip.org/vendor/AIP-Noto/tex-mml-chtml-aip-noto.js263 KB142 KB (54%)✓3rd
https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/styles/default/All.min.a1f7489c8aedaf4157ffb033f8cf83f5.gz.js118 KB85 KB (72%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-VRD9E9H20K&cx=c&gtm=4e64h1176 KB74 KB (42%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-948800938&cx=c&gtm=4e64h1146 KB60 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-K9S7D3L152 KB56 KB (43%)✓3rd
https://connect.facebook.net/en_US/bundle/sdk.js/78 KB54 KB (69%)✓3rd
https://cdn.jsdelivr.net/npm/mathjax@4/output/svg.js48 KB38 KB (81%)✓3rd
https://cmp.osano.com/Azytm7SGW0qsW1JZP/38b32bde-4e90-474d-96dc-85fbb11abfe3/osano.js85 KB23 KB (27%)✓3rd
https://www.aip.org/osano-bc.js2 KB—✓3rd
https://connect.facebook.net/en_US/sdk.js5 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
65 resources · 5.7 MB · 532 KB savings available
FIX
65 resources · 5.7 MB · 532 KB savings available
Warning::
Page weight 4.7 MB over 1MB target
Got: 5.7 MB Expected: ≤ 1 MB
Info::
~532 KB of savings available
Warning::
64 third-party resources (100% of weight)
Info::
4 resources over 200KB
65 resources · 5.7 MiB · 64 third-party 4.7 MiB over 1MB target
Media 51% · 2.9 MiB
JavaScript 27% · 1.5 MiB
Image 17% · 989.5 KiB
Font 2% · 97.8 KiB
CSS 2% · 88.0 KiB
Other 1% · 62.4 KiB
Document 1% · 47.5 KiB

~532.4 KiB of savings available

Remove unused JavaScript: 532.4 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

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

C
Image Optimization
Action
31 images, 0 KB saveable
REVIEW
31 images, 0 KB saveable
Warning::
https://aip.brightspotcdn.com/fe/cb/baa748ae4d868d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://aip.brightspotcdn.com/fe/c3/f2a9442d4c4bbf... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://aip.brightspotcdn.com/a0/9e/2605494245e583... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
31 images 983 KB
0 oversized -0 KB
4 legacy format
3 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

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
3 fonts (98 KB)
PASS
3 fonts (98 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

98 KB total

Render-blocking

0

of 3

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 2.0 shttps://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/9fcc3c44094beef14841.c0e36746391b16abb316343b1ed78268.woff29fcc3c44094beef14841.c0... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/9fcc3c44094beef14841.c0e36746391b16abb316343b1ed78268.woff2 — 36.4 KiB — 90 ms — font-display: swaphttps://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/e2edec3617d27aba6289.0fe3e292c57fca1eb85d4f90db0a4e05.woff2e2edec3617d27aba6289.0f... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/e2edec3617d27aba6289.0fe3e292c57fca1eb85d4f90db0a4e05.woff2 — 35.9 KiB — 6 ms — font-display: swaphttps://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/23cc1ae32737e9444c4a.ce4cef96c41420fd324f0b0b3d64d092.woff223cc1ae32737e9444c4a.ce... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/23cc1ae32737e9444c4a.ce4cef96c41420fd324f0b0b3d64d092.woff2 — 25.5 KiB — 8 ms — font-display: swap
9fcc3c44094beef14841.c0... woff2 swap
Size 36 KB
Load time 90 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
e2edec3617d27aba6289.0f... woff2 swap
Size 36 KB
Load time 6 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
23cc1ae32737e9444c4a.ce... woff2 swap
Size 26 KB
Load time 8 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
65 requests over 3348ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.1 s LCP 2.0 shttps://aip.org// https://aip.org/ — 301 — 241 B — 336 ms — h2https://www.aip.org/www.aip.org/ https://www.aip.org/ — 200 — 46.3 KiB — 314 ms — h2https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/styles/default/All.min.cb6b14dd52110433d16899c8a4ae8708.gz.cssaip.brightspotcdn.com/resource/0000... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/styles/default/All.min.cb6b14dd52110433d16899c8a4ae8708.gz.css — 200 — 88.0 KiB — 363 ms — h2https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/webcomponents-loader/webcomponents-loader.2938a610ca02c611209b1a5ba2884385.gz.jsaip.brightspotcdn.com/resource/0000... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/webcomponents-loader/webcomponents-loader.2938a610ca02c611209b1a5ba2884385.gz.js — 200 — 1.4 KiB — 351 ms — h2https://cmp.osano.com/Azytm7SGW0qsW1JZP/38b32bde-4e90-474d-96dc-85fbb11abfe3/osano.jscmp.osano.com/Azytm7SGW0qsW1JZP/38b... https://cmp.osano.com/Azytm7SGW0qsW1JZP/38b32bde-4e90-474d-96dc-85fbb11abfe3/osano.js — 200 — 85.5 KiB — 38 ms — h3https://bc.aip.org/script.jsbc.aip.org/script.js https://bc.aip.org/script.js — 200 — 41.6 KiB — 43 ms — h2https://www.aip.org/osano-bc.jswww.aip.org/osano-bc.js https://www.aip.org/osano-bc.js — 200 — 1.9 KiB — 14 ms — h2https://aip.brightspotcdn.com/fe/cb/baa748ae4d868d49228857e2b2af/logo-aip-dark-blue.svgaip.brightspotcdn.com/fe/cb/baa748a... https://aip.brightspotcdn.com/fe/cb/baa748ae4d868d49228857e2b2af/logo-aip-dark-blue.svg — 200 — 1.4 KiB — 357 ms — h2https://aip.brightspotcdn.com/dims4/default/f4bb73d/2147483647/strip/true/crop/800x450+0+0/resize/800x450!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2Fac%2Fac%2F02bbcc7e41e39460ce80ec0d3b45%2Ffe26a6e1-6c58-47ca-8420-86b2bc191457.jpgaip.brightspotcdn.com/dims4/default... https://aip.brightspotcdn.com/dims4/default/f4bb73d/2147483647/strip/true/crop/800x450+0+0/resize/800x450!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2Fac%2Fac%2F02bbcc7e41e39460ce80ec0d3b45%2Ffe26a6e1-6c58-47ca-8420-86b2bc191457.jpg — 200 — 31.9 KiB — 355 ms — h2https://aip.brightspotcdn.com/dims4/default/2f35dab/2147483647/strip/true/crop/506x755+0+0/resize/506x755!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2F4b%2Fc2%2F0a9b1b3f4fefade4ed20f4f98555%2Farchives-of-science-cover.pngaip.brightspotcdn.com/dims4/default... https://aip.brightspotcdn.com/dims4/default/2f35dab/2147483647/strip/true/crop/506x755+0+0/resize/506x755!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2F4b%2Fc2%2F0a9b1b3f4fefade4ed20f4f98555%2Farchives-of-science-cover.png — 200 — 103.4 KiB — 16 ms — h2https://aip.brightspotcdn.com/dims4/default/2beada3/2147483647/strip/true/crop/2387x1593+0+0/resize/1300x868!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2Fbd%2F36%2F1bb713994832bb1f9182011fe64b%2Ffaces-image-1.jpgaip.brightspotcdn.com/dims4/default... https://aip.brightspotcdn.com/dims4/default/2beada3/2147483647/strip/true/crop/2387x1593+0+0/resize/1300x868!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2Fbd%2F36%2F1bb713994832bb1f9182011fe64b%2Ffaces-image-1.jpg — 200 — 308.6 KiB — 23 ms — h2https://aip.brightspotcdn.com/fe/c3/f2a9442d4c4bbf316b6c01cdffe5/logo-pt.svgaip.brightspotcdn.com/fe/c3/f2a9442... https://aip.brightspotcdn.com/fe/c3/f2a9442d4c4bbf316b6c01cdffe5/logo-pt.svg — 200 — 9.6 KiB — 6 ms — h2blob:https://www.aip.org/da274cef-1b5d-4d3f-b736-9cee64016543www.aip.org/da274cef-1b5d-4d3f-b736... blob:https://www.aip.org/da274cef-1b5d-4d3f-b736-9cee64016543 — 200 — -1 B — 114 ms — blobhttps://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/_resource/analytics/bsp-analytics.min.686c87a3ca6667675841641b91fc7fe6.gz.jsaip.brightspotcdn.com/resource/0000... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/_resource/analytics/bsp-analytics.min.686c87a3ca6667675841641b91fc7fe6.gz.js — 200 — 3.2 KiB — 141 ms — h2https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/styles/default/All.min.a1f7489c8aedaf4157ffb033f8cf83f5.gz.jsaip.brightspotcdn.com/resource/0000... https://aip.brightspotcdn.com/resource/00000187-94c4-dd05-a9ef-d6e61dac0000/styles/default/All.min.a1f7489c8aedaf4157ffb033f8cf83f5.gz.js — 200 — 118.3 KiB — 175 ms — h2https://script.crazyegg.com/pages/scripts/0044/9601.jsscript.crazyegg.com/pages/scripts/0... https://script.crazyegg.com/pages/scripts/0044/9601.js — 200 — 2.7 KiB — 57 ms — h3https://www.aip.org/vendor/AIP-Noto/tex-mml-chtml-aip-noto.jswww.aip.org/vendor/AIP-Noto/tex-mml... https://www.aip.org/vendor/AIP-Noto/tex-mml-chtml-aip-noto.js — 200 — 263.0 KiB — 176 ms — h2https://aip.brightspotcdn.com/dims4/default/aa7fb3e/2147483647/strip/true/crop/3264x2448+0+0/resize/302x227!/format/webp/quality/90/?url=https%3A%2F%2Fk1-prod-aip.s3.us-east-2.amazonaws.com%2Fbrightspot%2Fd2%2Fb2%2F7f54f3634ccfa80df7f433bc6383%2Fpt-00076-sw-search-highres-turbulence-fig2.jpegaip.brightspotcdn.com/dims4/default... 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h2https://cdn.jsdelivr.net/npm/mathjax@4/output/svg.jscdn.jsdelivr.net/npm/mathjax@4/outp... https://cdn.jsdelivr.net/npm/mathjax@4/output/svg.js — 200 — 47.7 KiB — 36 ms — h2https://connect.facebook.net/en_US/bundle/sdk.js/connect.facebook.net/en_US/bundle/s... https://connect.facebook.net/en_US/bundle/sdk.js/ — 200 — 77.8 KiB — 33 ms — h3https://script.crazyegg.com/pages/data-scripts/0044/9601/site/www.aip.org.json?t=1script.crazyegg.com/pages/data-scri... https://script.crazyegg.com/pages/data-scripts/0044/9601/site/www.aip.org.json?t=1 — 200 — 747 B — 22 ms — h3https://www.googletagmanager.com/gtag/js?id=G-VRD9E9H20K&cx=c&gtm=4e64h1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-VRD9E9H20K&cx=c&gtm=4e64h1 — 200 — 175.7 KiB — 48 ms — h2https://www.googletagmanager.com/gtag/js?id=AW-948800938&cx=c&gtm=4e64h1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=AW-948800938&cx=c&gtm=4e64h1 — 200 — 146.2 KiB — 40 ms — h3https://www.google.com/ccm/collect?rcb=17&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fwww.aip.org%2F&scrsrc=www.googletagmanager.com&rnd=943802998.1776805424&dt=AIP.ORG&navt=n&npa=1&us_privacy=1---&ep.ads_data_redaction=0&gtm=45He64h1v867350801za200zd867350801xea&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tcfd=10001&tag_exp=0~115616986~115938465~115938468~117266400~118167058&apve=1&apvf=f&apvc=1&tft=1776805424179&tfd=2499www.google.com/ccm/collect?rcb=17&f... https://www.google.com/ccm/collect?rcb=17&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fwww.aip.org%2F&scrsrc=www.googletagmanager.com&rnd=943802998.1776805424&dt=AIP.ORG&navt=n&npa=1&us_privacy=1---&ep.ads_data_redaction=0&gtm=45He64h1v867350801za200zd867350801xea&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tcfd=10001&tag_exp=0~115616986~115938465~115938468~117266400~118167058&apve=1&apvf=f&apvc=1&tft=1776805424179&tfd=2499 — 200 — 21 B — 46 ms — h3https://www.aip.org/vendor/AIP-Noto/svg.jswww.aip.org/vendor/AIP-Noto/svg.js https://www.aip.org/vendor/AIP-Noto/svg.js — 200 — 321.3 KiB — 71 ms — h2blob:https://www.aip.org/dadab5af-0f91-4d96-853b-08f42aa5702cwww.aip.org/dadab5af-0f91-4d96-853b... blob:https://www.aip.org/dadab5af-0f91-4d96-853b-08f42aa5702c — 200 — -1 B — 53 ms — blobblob:https://www.aip.org/40b9aa18-4fbc-45d0-a9c3-6d712d76a0ffwww.aip.org/40b9aa18-4fbc-45d0-a9c3... blob:https://www.aip.org/40b9aa18-4fbc-45d0-a9c3-6d712d76a0ff — 200 — -1 B — 247 ms — blobhttps://cdn.jsdelivr.net/npm/mathjax@4/sre/speech-worker.jscdn.jsdelivr.net/npm/mathjax@4/sre/... https://cdn.jsdelivr.net/npm/mathjax@4/sre/speech-worker.js — 200 — 121.7 KiB — 40 ms — h2https://cdn.jsdelivr.net/npm/mathjax@4/sre/mathmaps/base.jsoncdn.jsdelivr.net/npm/mathjax@4/sre/... https://cdn.jsdelivr.net/npm/mathjax@4/sre/mathmaps/base.json — 200 — 20.9 KiB — 24 ms — h3https://www.google.com/ccm/collect?rcb=6&frm=0&en=page_view&dl=https%3A%2F%2Fwww.aip.org%2F&scrsrc=www.googletagmanager.com&rnd=943802998.1776805424&dt=AIP.ORG&navt=n&npa=1&us_privacy=1---&gtm=45be64h1v879083184z8867350801za20gzb867350801zd867350801xec&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tcfd=10001&tag_exp=0~115616985~115938465~115938468~117266400~117884344&apve=1&apvf=f&apvc=0&tids=AW-948800938&tid=AW-948800938&tft=1776805424965&tfd=3285www.google.com/ccm/collect?rcb=6&fr... https://www.google.com/ccm/collect?rcb=6&frm=0&en=page_view&dl=https%3A%2F%2Fwww.aip.org%2F&scrsrc=www.googletagmanager.com&rnd=943802998.1776805424&dt=AIP.ORG&navt=n&npa=1&us_privacy=1---&gtm=45be64h1v879083184z8867350801za20gzb867350801zd867350801xec&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tcfd=10001&tag_exp=0~115616985~115938465~115938468~117266400~117884344&apve=1&apvf=f&apvc=0&tids=AW-948800938&tid=AW-948800938&tft=1776805424965&tfd=3285 — 200 — 21 B — 45 ms — h3https://cdn.jsdelivr.net/npm/mathjax@4/sre/mathmaps/en.jsoncdn.jsdelivr.net/npm/mathjax@4/sre/... https://cdn.jsdelivr.net/npm/mathjax@4/sre/mathmaps/en.json — 200 — 40.5 KiB — 19 ms — h3https://www.aip.org/favicon.icowww.aip.org/favicon.ico https://www.aip.org/favicon.ico — 200 — 6.4 KiB — 9 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 2382ms · 1386KB · €26/mo
aip.brightspotcdn.com
Other
Costly
Execution 372ms
Transfer 118 KB
Unused 72%
Monthly Cost €4/mo
cmp.osano.com
Other
Costly
Execution 345ms
Transfer 85 KB
Unused 27%
Monthly Cost €4/mo
www.aip.org
Other
Costly
Execution 318ms
Transfer 46 KB
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 281ms
Transfer 0 KB
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 251ms
Transfer 146 KB
Unused 41%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 231ms
Transfer 152 KB
Unused 43%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 188ms
Transfer 176 KB
Unused 42%
Monthly Cost €2/mo
www.aip.org
Other
Optional
Execution 165ms
Transfer 263 KB
Unused 54%
Monthly Cost €2/mo
www.aip.org
Other
Optional
Execution 164ms
Transfer 321 KB
Monthly Cost €2/mo
Facebook Pixel
Advertising
Optional
Execution 68ms
Transfer 78 KB
Unused 69%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • aip.brightspotcdn.com adds 372ms and costs ~€4/month
  • cmp.osano.com adds 345ms and costs ~€4/month
  • www.aip.org adds 318ms and costs ~€3/month
  • Unattributable adds 281ms and costs ~€3/month
  • Google Tag Manager adds 251ms and costs ~€3/month
  • Google Tag Manager adds 231ms and costs ~€2/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

aip.brightspotcdn.com takes 372ms 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

72% of aip.brightspotcdn.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

cmp.osano.com takes 345ms 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.aip.org takes 318ms 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 281ms 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 251ms 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 231ms 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 www.aip.org'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

69% of Facebook Pixel'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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