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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
4
PASS
5
INFO
2

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

Mobile Desktop
96
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.

585 ms

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

1.42 s

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

53 ms

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

0.000

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

673 ms

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

1.43 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
15
5 PASS 4 REVIEW 4 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.7 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
20 scripts, 945 KB unused
FIX
20 scripts, 945 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 176 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 945 KB
945 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/zFuF-tbndD6YrdyXHX3EVT0n/recaptcha__en.js0 KB176 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/zFuF-tbndD6YrdyXHX3EVT0n/recaptcha__en.js0 KB176 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/zFuF-tbndD6YrdyXHX3EVT0n/recaptcha__en.js0 KB176 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/zFuF-tbndD6YrdyXHX3EVT0n/recaptcha__en.js362 KB176 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/zFuF-tbndD6YrdyXHX3EVT0n/recaptcha__en.js362 KB176 KB (49%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-M182E1GBSR157 KB65 KB (42%)✓3rd
https://www.rand.org/etc/rand/support/js/core-init.min.fc22346c098d290f6c33cc8c2dabc652.js2 KB—✓3rd
https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=zFuF-tbndD6YrdyXHX3EVT0n0 KB—✓3rd
https://assets.adobedtm.com/38d7498ad394/aadd18c2d0a2/f8d07fb6acf2/RC455b14d4db5d4fb3aaf77005f379954d-source.min.js0 KB—✓3rd
https://static.chartbeat.com/js/chartbeat_mab.js10 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
73 resources · 1.7 MB · 945 KB savings available
FIX
73 resources · 1.7 MB · 945 KB savings available
Warning::
Page weight 748 KB over 1MB target
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~945 KB of savings available
Warning::
72 third-party resources (100% of weight)
Info::
3 resources over 200KB
73 resources · 1.7 MiB · 72 third-party 748.0 KiB over 1MB target
JavaScript 56% · 994.7 KiB
Image 19% · 328.2 KiB
Font 18% · 312.0 KiB
Document 4% · 69.9 KiB
CSS 4% · 64.3 KiB
Other 0% · 2.9 KiB

~944.8 KiB of savings available

Remove unused JavaScript: 944.8 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
Page Weight Budget
Action
1.7 MB transferred, 73 requests
REVIEW
1.7 MB transferred, 73 requests
Info::
Page weighs 6.0 MB (1.7 MB transferred)
Warning::
JavaScript is 994 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 994 KB
Info::
Fonts are 312 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 312 KB
Info::
73 HTTP requests
Info::
Estimated 0.36 g CO2 per page load
1.7 MB / 2.4 MB budget
1.7 MB transferred
73 requests
0.36 g CO2 per page load
JavaScript 994.5 KiB 56%
Images 323.8 KiB 18%
Fonts 312.0 KiB 18%
HTML 69.8 KiB 4%
CSS 64.3 KiB 4%
Other 5.3 KiB 0%
Other 1.8 KiB 0%
Other 547 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

B
Image Optimization
33 images, 0 KB saveable
REVIEW
33 images, 0 KB saveable
Info::
All images are well-optimized
33 images 324 KB
0 oversized -0 KB
20 legacy format
0 missing dimensions CLS risk
B
JS Execution Cost
988ms total JS execution
REVIEW
988ms total JS execution
Warning::
https://www.gstatic.com/recaptcha/releases/zFuF-tb...: 358ms CPU time
Info::
Unattributable: 177ms CPU time
Info::
https://assets.adobedtm.com/7b44bfa5332b3eae1bfbb6...: 139ms CPU time
Info::
https://www.rand.org/etc/rand/support/js/core.min....: 133ms CPU time
Info::
https://www.rand.org/: 95ms CPU time
Warning::
Third-party scripts: 988ms (100% of total)

Main Thread Breakdown

Script Evaluation 54% Style & Layout 19% Other 17% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://www.gstatic.com/recaptcha/releases/zFuF-tbndD6YrdyXHX3EVT0n/recaptcha__en.js358ms311ms28ms3rd
Unattributable177ms3ms0ms3rd
https://assets.adobedtm.com/7b44bfa5332b3eae1bfbb635a10267e767a4284f/satelliteLib-ba20fb485110a0c5418b54627a4aec099af80722.js139ms123ms9ms3rd
https://www.rand.org/etc/rand/support/js/core.min.5eddbe3ab86849d2afcd300cba62aa3a.js133ms5ms1ms3rd
https://www.rand.org/95ms4ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-M182E1GBSR84ms68ms16ms3rd
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 (312 KB)
PASS
4 fonts (312 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

312 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 FCP 585 ms LCP 1.4 shttps://www.rand.org/etc/rand/designs/common/fonts/monument-grotesk.woff2monument-grotesk.woff2 https://www.rand.org/etc/rand/designs/common/fonts/monument-grotesk.woff2 — 235.9 KiB — 49 ms — font-display: swaphttps://www.rand.org/etc/rand/designs/common/fonts/fraktion-mono-regular.woff2fraktion-mono-regular.w... https://www.rand.org/etc/rand/designs/common/fonts/fraktion-mono-regular.woff2 — 31.8 KiB — 36 ms — font-display: swaphttps://www.rand.org/etc/rand/designs/common/fonts/suisse-works.woff2suisse-works.woff2 https://www.rand.org/etc/rand/designs/common/fonts/suisse-works.woff2 — 22.1 KiB — 36 ms — font-display: swaphttps://www.rand.org/etc/rand/designs/common/fonts/suisse-works-bold.woff2suisse-works-bold.woff2 https://www.rand.org/etc/rand/designs/common/fonts/suisse-works-bold.woff2 — 22.2 KiB — 38 ms — font-display: swap
monument-grotesk.woff2 woff2 swap
Size 236 KB
Load time 49 ms
Start 112 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fraktion-mono-regular.w... woff2 swap
Size 32 KB
Load time 36 ms
Start 112 ms
Risk FOUT — text flashes from fallback to web font
suisse-works.woff2 woff2 swap
Size 22 KB
Load time 36 ms
Start 112 ms
Risk FOUT — text flashes from fallback to web font
suisse-works-bold.woff2 woff2 swap
Size 22 KB
Load time 38 ms
Start 113 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)

Fixing the unchecked items could save ~118 KB and ~236 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
Network Waterfall
73 requests over 1579ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 585 ms LCP 1.4 shttps://rand.org// https://rand.org/ — 301 — 83 B — 50 ms — h2https://www.rand.org/www.rand.org/ https://www.rand.org/ — 200 — 11.5 KiB — 50 ms — h3https://assets.adobedtm.com/7b44bfa5332b3eae1bfbb635a10267e767a4284f/satelliteLib-ba20fb485110a0c5418b54627a4aec099af80722.jsassets.adobedtm.com/7b44bfa5332b3ea... https://assets.adobedtm.com/7b44bfa5332b3eae1bfbb635a10267e767a4284f/satelliteLib-ba20fb485110a0c5418b54627a4aec099af80722.js — 200 — 59.4 KiB — 52 ms — h2https://www.rand.org/etc/rand/support/js/core-init.min.fc22346c098d290f6c33cc8c2dabc652.jswww.rand.org/etc/rand/support/js/co... https://www.rand.org/etc/rand/support/js/core-init.min.fc22346c098d290f6c33cc8c2dabc652.js — 200 — 2.4 KiB — 17 ms — h3https://www.rand.org/etc/rand/designs/common/fonts/monument-grotesk.woff2www.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/fonts/monument-grotesk.woff2 — 200 — 235.9 KiB — 49 ms — h3https://www.rand.org/etc/rand/designs/common/fonts/fraktion-mono-regular.woff2www.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/fonts/fraktion-mono-regular.woff2 — 200 — 31.8 KiB — 36 ms — h3https://www.rand.org/etc/rand/designs/common/fonts/suisse-works.woff2www.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/fonts/suisse-works.woff2 — 200 — 22.1 KiB — 36 ms — h3https://www.rand.org/etc/rand/designs/common/fonts/suisse-works-bold.woff2www.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/fonts/suisse-works-bold.woff2 — 200 — 22.2 KiB — 38 ms — h3https://www.rand.org/etc/rand/designs/rand/ui/rand.min.afc6e94eb3c2c0d7b6d81fd59f9d6e0c.csswww.rand.org/etc/rand/designs/rand/... https://www.rand.org/etc/rand/designs/rand/ui/rand.min.afc6e94eb3c2c0d7b6d81fd59f9d6e0c.css — 200 — 22.1 KiB — 29 ms — h3https://www.rand.org/etc/rand/designs/common/images/logo-corp.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/images/logo-corp.svg — 200 — 1.3 KiB — 26 ms — h3https://www.google.com/recaptcha/api.js?onload=randRecaptchaCallback&render=explicitwww.google.com/recaptcha/api.js?onl... https://www.google.com/recaptcha/api.js?onload=randRecaptchaCallback&render=explicit — 200 — 1.0 KiB — 36 ms — h3https://www.rand.org/etc/rand/support/js/core.min.5eddbe3ab86849d2afcd300cba62aa3a.jswww.rand.org/etc/rand/support/js/co... https://www.rand.org/etc/rand/support/js/core.min.5eddbe3ab86849d2afcd300cba62aa3a.js — 200 — 6.7 KiB — 24 ms — h3https://www.rand.org/etc/rand/support/js/grid-calculator-for-lists.min.960f37434ca2242d6ad02649a0df9728.jswww.rand.org/etc/rand/support/js/gr... https://www.rand.org/etc/rand/support/js/grid-calculator-for-lists.min.960f37434ca2242d6ad02649a0df9728.js — 200 — 785 B — 24 ms — h3https://www.googletagmanager.com/gtag/js?id=G-M182E1GBSRwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-M182E1GBSR — 200 — 157.4 KiB — 75 ms — h2https://www.rand.org/etc/rand/designs/common/icons/trending.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/trending.8b5ded5.svg — 200 — 528 B — 8 ms — h3https://www.rand.org/etc/rand/designs/common/icons/envelope.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/envelope.8b5ded5.svg — 200 — 519 B — 7 ms — h3https://www.rand.org/etc/rand/designs/common/icons/search.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/search.8b5ded5.svg — 200 — 546 B — 9 ms — h3https://www.rand.org/content/dam/rand/www/external/about/homepage-pc-feature-pattern.svgwww.rand.org/content/dam/rand/www/e... https://www.rand.org/content/dam/rand/www/external/about/homepage-pc-feature-pattern.svg — 200 — 7.9 KiB — 10 ms — h3https://www.rand.org/content/dam/rand/www/external/about/haltone-rand-swoop.pngwww.rand.org/content/dam/rand/www/e... https://www.rand.org/content/dam/rand/www/external/about/haltone-rand-swoop.png — 200 — 64.3 KiB — 13 ms — h3https://www.rand.org/etc/rand/designs/common/icons/bar-chart.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/bar-chart.8b5ded5.svg — 200 — 495 B — 9 ms — h3https://www.rand.org/etc/rand/designs/common/icons/quote-sand.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/quote-sand.8b5ded5.svg — 200 — 525 B — 9 ms — h3https://www.rand.org/content/dam/rand/www/external/about/lines-background.svgwww.rand.org/content/dam/rand/www/e... https://www.rand.org/content/dam/rand/www/external/about/lines-background.svg — 200 — 946 B — 10 ms — h3https://www.rand.org/etc/rand/designs/common/icons/linkedin.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/linkedin.8b5ded5.svg — 200 — 678 B — 8 ms — h3https://www.rand.org/etc/rand/designs/common/icons/twitter.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/twitter.8b5ded5.svg — 200 — 584 B — 19 ms — h3https://www.rand.org/etc/rand/designs/common/icons/instagram.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/instagram.8b5ded5.svg — 200 — 927 B — 9 ms — h3https://www.rand.org/etc/rand/designs/common/icons/facebook.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/facebook.8b5ded5.svg — 200 — 605 B — 18 ms — h3https://www.rand.org/etc/rand/designs/common/icons/youtube.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/youtube.8b5ded5.svg — 200 — 645 B — 13 ms — h3https://www.rand.org/etc/rand/designs/common/icons/bluesky.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/bluesky.8b5ded5.svg — 200 — 689 B — 18 ms — h3https://www.rand.org/etc/rand/designs/common/icons/threads.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/threads.8b5ded5.svg — 200 — 994 B — 18 ms — h3https://www.rand.org/etc/rand/designs/common/icons/policy-minded.8b5ded5.svgwww.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/icons/policy-minded.8b5ded5.svg — 200 — 659 B — 16 ms — h3
0 ms 500 ms 1.0 s 1.5 s FCP 585 ms LCP 1.4 shttps://rand.org// https://rand.org/ — 301 — 83 B — 50 ms — h2https://www.rand.org/www.rand.org/ https://www.rand.org/ — 200 — 11.5 KiB — 50 ms — h3https://assets.adobedtm.com/7b44bfa5332b3eae1bfbb635a10267e767a4284f/satelliteLib-ba20fb485110a0c5418b54627a4aec099af80722.jsassets.adobedtm.com/7b44bfa5332b3ea... https://assets.adobedtm.com/7b44bfa5332b3eae1bfbb635a10267e767a4284f/satelliteLib-ba20fb485110a0c5418b54627a4aec099af80722.js — 200 — 59.4 KiB — 52 ms — h2https://www.rand.org/etc/rand/support/js/core-init.min.fc22346c098d290f6c33cc8c2dabc652.jswww.rand.org/etc/rand/support/js/co... https://www.rand.org/etc/rand/support/js/core-init.min.fc22346c098d290f6c33cc8c2dabc652.js — 200 — 2.4 KiB — 17 ms — h3https://www.rand.org/etc/rand/designs/common/fonts/monument-grotesk.woff2www.rand.org/etc/rand/designs/commo... https://www.rand.org/etc/rand/designs/common/fonts/monument-grotesk.woff2 — 200 — 235.9 KiB — 49 ms — 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https://www.rand.org/etc/rand/designs/common/images/favicon.png — 200 — 3.6 KiB — 9 ms — h3https://ping.chartbeat.net/ping?h=rand.org&p=%2F&u=CJ2sKDCaHnUjDshht4&d=rand.org&g=62958&g0=none&g1=No%20Author&g4=none&n=1&f=00001&c=0&x=0&m=0&y=5183&o=1350&w=940&j=45&R=1&W=0&I=0&E=0&e=0&r=&PA=https%3A%2F%2Fwww.rand.org%2F&b=1176&t=CK8YLQCD8BRkBb8EFKCrNCh9fvexn&V=150&i=RAND%20Provides%20Objective%20Research%20Services%20and%20Public%20Policy%20Analysis%20%7C%20RAND&tz=0&_acct=anon&sn=1&sv=DnEgJABIsUimCB5gzVCZvRfiDWvsw-&sr=external&sd=1&im=067b0ff3&_ping.chartbeat.net/ping?h=rand.org&... https://ping.chartbeat.net/ping?h=rand.org&p=%2F&u=CJ2sKDCaHnUjDshht4&d=rand.org&g=62958&g0=none&g1=No%20Author&g4=none&n=1&f=00001&c=0&x=0&m=0&y=5183&o=1350&w=940&j=45&R=1&W=0&I=0&E=0&e=0&r=&PA=https%3A%2F%2Fwww.rand.org%2F&b=1176&t=CK8YLQCD8BRkBb8EFKCrNCh9fvexn&V=150&i=RAND%20Provides%20Objective%20Research%20Services%20and%20Public%20Policy%20Analysis%20%7C%20RAND&tz=0&_acct=anon&sn=1&sv=DnEgJABIsUimCB5gzVCZvRfiDWvsw-&sr=external&sd=1&im=067b0ff3&_ — 200 — 201 B — 32 ms — h2https://rand.d1.sc.omtrdc.net/id?d_visid_ver=5.5.0&d_fieldgroup=A&mcorgid=F07CA6C85640B3F57F000101%40AdobeOrg&mid=57882221085732965191121438348159629229&ts=1776804291107rand.d1.sc.omtrdc.net/id?d_visid_ve... https://rand.d1.sc.omtrdc.net/id?d_visid_ver=5.5.0&d_fieldgroup=A&mcorgid=F07CA6C85640B3F57F000101%40AdobeOrg&mid=57882221085732965191121438348159629229&ts=1776804291107 — 200 — 264 B — 40 ms — h2https://cm.everesttech.net/cm/dd?d_uuid=58237692890315673491085908724453906399cm.everesttech.net/cm/dd?d_uuid=582... https://cm.everesttech.net/cm/dd?d_uuid=58237692890315673491085908724453906399 — 302 — 517 B — 37 ms — http/1.1https://rand.demdex.net/dest5.html?d_nsid=0rand.demdex.net/dest5.html?d_nsid=0 https://rand.demdex.net/dest5.html?d_nsid=0 — 200 — 3.2 KiB — 37 ms — h2https://dpm.demdex.net/ibs:dpid=411&dpuuid=aefhwwAAAE81mwNPdpm.demdex.net/ibs:dpid=411&dpuuid=... https://dpm.demdex.net/ibs:dpid=411&dpuuid=aefhwwAAAE81mwNP — 302 — 530 B — 43 ms — h2https://rand.d1.sc.omtrdc.net/b/ss/rand-prod/1/JS-2.27.0-LGPQ/s82887777679242rand.d1.sc.omtrdc.net/b/ss/rand-pro... https://rand.d1.sc.omtrdc.net/b/ss/rand-prod/1/JS-2.27.0-LGPQ/s82887777679242 — 200 — 197 B — 16 ms — h2https://dpm.demdex.net/demconf.jpg?et:ibs%7cdata:dpid=411&dpuuid=aefhwwAAAE81mwNPdpm.demdex.net/demconf.jpg?et:ibs%7... https://dpm.demdex.net/demconf.jpg?et:ibs%7cdata:dpid=411&dpuuid=aefhwwAAAE81mwNP — 200 — 469 B — 12 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 988ms · 235KB · $13/mo
www.gstatic.com
Other
Costly
Execution 358ms
Transfer 0 KB
Unused 49%
Monthly Cost $5/mo
Unattributable
Other
Optional
Execution 177ms
Transfer 0 KB
Monthly Cost $2/mo
assets.adobedtm.com
Other
Optional
Execution 139ms
Transfer 59 KB
Monthly Cost $2/mo
www.rand.org
Other
Optional
Execution 133ms
Transfer 7 KB
Monthly Cost $2/mo
www.rand.org
Other
Optional
Execution 95ms
Transfer 11 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 84ms
Transfer 157 KB
Unused 42%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.gstatic.com adds 358ms and costs ~$5/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.gstatic.com takes 358ms 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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