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https://builtin.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
4
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
94
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.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

949 ms

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

1.45 s

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

0 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.

1.04 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.

1.47 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
7 PASS 2 REVIEW 4 FIX
D
Third-Party Impact
Action
96% third-party, 0 ms blocking
FIX
96% third-party, 0 ms blocking
Warning::
Third-party code accounts for 96% of page weight (1.3 MiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
96%
First-party Third-party
D
JS Bundles
Action
10 scripts, 346 KB unused
FIX
10 scripts, 346 KB unused
Warning::
https://static.builtin.com/dist/js/common.bundle.j...: 76 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://accounts.google.com/gsi/client: 68 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-VE30...: 62 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-M7N...: 62 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.builtin.com/home/js/main.bundle.007...: 55 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 346 KB
346 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.builtin.com/dist/js/common.bundle.js96 KB76 KB (80%)✓3rd
https://accounts.google.com/gsi/client96 KB68 KB (71%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-VE30Y87RZ9&cx=c&gtm=4e64h1156 KB62 KB (40%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-M7NGJ28131 KB62 KB (47%)✓3rd
https://static.builtin.com/home/js/main.bundle.007d7529e09632bd77fc.js70 KB55 KB (78%)✓3rd
https://cmp.osano.com/IhL2ZuL9KH/7e65777c-dfd4-48c4-8e6e-a21df7f3237e/osano.js69 KB23 KB (33%)✓3rd
https://kit.fontawesome.com/e1bbd40aec.js6 KB—✓3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 KB—✓3rd
https://builtin.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14 KB—✓1st
blob:https://builtin.com/8e7ac14f-4990-491f-bc3f-76baaeb3dcc1-0 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

D
Page Weight Inventory
Action
81 resources · 1.4 MB · 346 KB savings available
FIX
81 resources · 1.4 MB · 346 KB savings available
Warning::
Page weight 407 KB over 1MB target
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~346 KB of savings available
Warning::
76 third-party resources (96% of weight)
81 resources · 1.4 MiB · 76 third-party 407.0 KiB over 1MB target
JavaScript 45% · 649.1 KiB
Font 26% · 369.8 KiB
Image 17% · 241.1 KiB
CSS 8% · 120.9 KiB
Document 3% · 47.2 KiB
Other 0% · 3.0 KiB

~345.5 KiB of savings available

Remove unused JavaScript: 345.5 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.

B
Page Weight Budget
1.4 MB transferred, 81 requests
REVIEW
1.4 MB transferred, 81 requests
Info::
Page weighs 3.6 MB (1.4 MB transferred)
Warning::
JavaScript is 649 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 649 KB
Info::
Fonts are 370 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 370 KB
Info::
81 HTTP requests
Info::
Estimated 0.29 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
81 requests
0.29 g CO2 per page load
JavaScript 649.1 KiB 45%
Fonts 369.8 KiB 26%
Images 240.0 KiB 17%
Other 95.0 KiB 7%
HTML 47.2 KiB 3%
CSS 27.0 KiB 2%
Other 1.5 KiB 0%
Other 1.5 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under 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

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
JS Execution Cost
562ms total JS execution
REVIEW
562ms total JS execution
Info::
https://builtin.com/: 246ms CPU time
Info::
Unattributable: 90ms CPU time
Info::
https://cmp.osano.com/IhL2ZuL9KH/7e65777c-dfd4-48c...: 59ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-VE30...: 59ms CPU time
Info::
https://builtin.com/cdn-cgi/challenge-platform/scr...: 58ms CPU time
Info::
Third-party scripts: 258ms (46% of total)

Main Thread Breakdown

Script Evaluation 47% Other 21% Style & Layout 17% Script Parsing & Compilation 6% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://builtin.com/246ms31ms1ms1st
Unattributable90ms5ms0ms3rd
https://cmp.osano.com/IhL2ZuL9KH/7e65777c-dfd4-48c4-8e6e-a21df7f3237e/osano.js59ms44ms6ms3rd
https://www.googletagmanager.com/gtag/js?id=G-VE30Y87RZ9&cx=c&gtm=4e64h159ms49ms9ms3rd
https://builtin.com/cdn-cgi/challenge-platform/scripts/jsd/main.js58ms54ms2ms1st
https://accounts.google.com/gsi/client50ms43ms4ms3rd
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
Image Optimization
35 images, 0 KB saveable
PASS
35 images, 0 KB saveable
Info::
All images are well-optimized
35 images 240 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+
Font Loading
18 fonts (370 KB)
PASS
18 fonts (370 KB)
Info::
18 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

18

370 KB total

Render-blocking

0

of 18

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 FCP 949 ms LCP 1.5 shttps://static.builtin.com/dist/fonts/PlayfairDisplay-Black.woff2PlayfairDisplay-Black.w... https://static.builtin.com/dist/fonts/PlayfairDisplay-Black.woff2 — 66.5 KiB — 88 ms — font-display: swaphttps://static.builtin.com/dist/fonts/barlow-condensed-v12-latin-regular.woff2barlow-condensed-v12-la... https://static.builtin.com/dist/fonts/barlow-condensed-v12-latin-regular.woff2 — 20.5 KiB — 107 ms — font-display: swaphttps://static.builtin.com/dist/fonts/montserrat-v25-latin-regular.woff2montserrat-v25-latin-re... https://static.builtin.com/dist/fonts/montserrat-v25-latin-regular.woff2 — 13.8 KiB — 111 ms — font-display: swaphttps://static.builtin.com/dist/fonts/montserrat-v25-latin-700.woff2montserrat-v25-latin-70... https://static.builtin.com/dist/fonts/montserrat-v25-latin-700.woff2 — 13.3 KiB — 36 ms — font-display: swaphttps://static.builtin.com/dist/fonts/montserrat-v25-latin-800.woff2montserrat-v25-latin-80... https://static.builtin.com/dist/fonts/montserrat-v25-latin-800.woff2 — 13.4 KiB — 29 ms — font-display: swaphttps://static.builtin.com/dist/fonts/barlow-condensed-v12-latin-500.woff2barlow-condensed-v12-la... https://static.builtin.com/dist/fonts/barlow-condensed-v12-latin-500.woff2 — 20.7 KiB — 26 ms — font-display: swaphttps://static.builtin.com/dist/fonts/montserrat-v25-latin-600.woff2montserrat-v25-latin-60... https://static.builtin.com/dist/fonts/montserrat-v25-latin-600.woff2 — 13.2 KiB — 46 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-brands-400-0.woff2pro-fa-brands-400-0.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-brands-400-0.woff2 — 36.9 KiB — 41 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-15.woff2pro-fa-solid-900-15.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-15.woff2 — 11.8 KiB — 43 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-0.woff2pro-fa-solid-900-0.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-0.woff2 — 11.8 KiB — 42 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-regular-400-16.woff2pro-fa-regular-400-16.w... https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-regular-400-16.woff2 — 21.0 KiB — 38 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-regular-400-1.woff2pro-fa-regular-400-1.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-regular-400-1.woff2 — 16.7 KiB — 44 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-light-300-12.woff2pro-fa-light-300-12.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-light-300-12.woff2 — 20.2 KiB — 52 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-12.woff2pro-fa-solid-900-12.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-12.woff2 — 16.1 KiB — 58 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-regular-400-22.woff2pro-fa-regular-400-22.w... https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-regular-400-22.woff2 — 19.8 KiB — 45 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-18.woff2pro-fa-solid-900-18.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-18.woff2 — 19.1 KiB — 57 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-2.woff2pro-fa-solid-900-2.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-2.woff2 — 21.4 KiB — 54 ms — font-display: swaphttps://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-13.woff2pro-fa-solid-900-13.woff2 https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-13.woff2 — 13.4 KiB — 52 ms — font-display: swap
PlayfairDisplay-Black.w... woff2 swap
Size 66 KB
Load time 88 ms
Start 352 ms
Risk FOUT — text flashes from fallback to web font
barlow-condensed-v12-la... woff2 swap
Size 21 KB
Load time 107 ms
Start 352 ms
Risk FOUT — text flashes from fallback to web font
montserrat-v25-latin-re... woff2 swap
Size 14 KB
Load time 111 ms
Start 352 ms
Risk FOUT — text flashes from fallback to web font
montserrat-v25-latin-70... woff2 swap
Size 13 KB
Load time 36 ms
Start 515 ms
Risk FOUT — text flashes from fallback to web font
montserrat-v25-latin-80... woff2 swap
Size 13 KB
Load time 29 ms
Start 515 ms
Risk FOUT — text flashes from fallback to web font
barlow-condensed-v12-la... woff2 swap
Size 21 KB
Load time 26 ms
Start 516 ms
Risk FOUT — text flashes from fallback to web font
montserrat-v25-latin-60... woff2 swap
Size 13 KB
Load time 46 ms
Start 516 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-brands-400-0.woff2 woff2 swap
Size 37 KB
Load time 41 ms
Start 750 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-15.woff2 woff2 swap
Size 12 KB
Load time 43 ms
Start 750 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-0.woff2 woff2 swap
Size 12 KB
Load time 42 ms
Start 750 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-regular-400-16.w... woff2 swap
Size 21 KB
Load time 38 ms
Start 751 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-regular-400-1.woff2 woff2 swap
Size 17 KB
Load time 44 ms
Start 751 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-light-300-12.woff2 woff2 swap
Size 20 KB
Load time 52 ms
Start 751 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-12.woff2 woff2 swap
Size 16 KB
Load time 58 ms
Start 751 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-regular-400-22.w... woff2 swap
Size 20 KB
Load time 45 ms
Start 751 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-18.woff2 woff2 swap
Size 19 KB
Load time 57 ms
Start 751 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-2.woff2 woff2 swap
Size 21 KB
Load time 54 ms
Start 752 ms
Risk FOUT — text flashes from fallback to web font
pro-fa-solid-900-13.woff2 woff2 swap
Size 13 KB
Load time 52 ms
Start 752 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: Cloudflare

Network Waterfall
81 requests over 1645ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 949 ms LCP 1.5 shttps://builtin.com// https://builtin.com/ — 200 — 45.9 KiB — 419 ms — h3https://static.builtin.com/dist/fonts/PlayfairDisplay-Black.woff2static.builtin.com/dist/fonts/Playf... https://static.builtin.com/dist/fonts/PlayfairDisplay-Black.woff2 — 200 — 66.5 KiB — 88 ms — h3https://static.builtin.com/dist/fonts/barlow-condensed-v12-latin-regular.woff2static.builtin.com/dist/fonts/barlo... https://static.builtin.com/dist/fonts/barlow-condensed-v12-latin-regular.woff2 — 200 — 20.5 KiB — 107 ms — h3https://static.builtin.com/dist/fonts/montserrat-v25-latin-regular.woff2static.builtin.com/dist/fonts/monts... https://static.builtin.com/dist/fonts/montserrat-v25-latin-regular.woff2 — 200 — 13.8 KiB — 111 ms — h3https://static.builtin.com/dist/blaze/blaze.cssstatic.builtin.com/dist/blaze/blaze... https://static.builtin.com/dist/blaze/blaze.css — 200 — 726 B — 39 ms — h3https://static.builtin.com/home/css/main.bundle.a84a4c8c8d74a623aa2c.cssstatic.builtin.com/home/css/main.bu... https://static.builtin.com/home/css/main.bundle.a84a4c8c8d74a623aa2c.css — 200 — 25.7 KiB — 45 ms — h3https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2021-08/gg.pngcdn.builtin.com/cdn-cgi/image/f=aut... https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2021-08/gg.png — 200 — 7.9 KiB — 50 ms — h3https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2024-07/cencora%208.jpegcdn.builtin.com/cdn-cgi/image/f=aut... https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2024-07/cencora%208.jpeg — 200 — 21.4 KiB — 140 ms — h3https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2025-10/20250805-HR-Recruitment-Global_offsite-photography-2368x1576.jpgcdn.builtin.com/cdn-cgi/image/f=aut... https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2025-10/20250805-HR-Recruitment-Global_offsite-photography-2368x1576.jpg — 200 — 15.9 KiB — 32 ms — h3https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2025-09/Couch-collabs_02_240702_0.pngcdn.builtin.com/cdn-cgi/image/f=aut... https://cdn.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/sites/www.builtin.com/files/2025-09/Couch-collabs_02_240702_0.png — 200 — 12.5 KiB — 37 ms — h3https://static.builtin.com/cdn-cgi/image/f=auto,fit=crop,w=363,h=204/companies-assets/147748/galleries/89ae609a-1e40-4709-a3f9-b674799ebf61/Screenshot%202026-03-13%20at%2011.11.44%E2%80%AFAM.pngstatic.builtin.com/cdn-cgi/image/f=... 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h2https://ka-p.fontawesome.com/releases/v6.7.2/css/pro-v5-font-face.min.css?token=e1bbd40aecka-p.fontawesome.com/releases/v6.7.... https://ka-p.fontawesome.com/releases/v6.7.2/css/pro-v5-font-face.min.css?token=e1bbd40aec — 200 — 7.2 KiB — 49 ms — h2https://ka-p.fontawesome.com/releases/v6.7.2/css/pro-v4-font-face.min.css?token=e1bbd40aecka-p.fontawesome.com/releases/v6.7.... https://ka-p.fontawesome.com/releases/v6.7.2/css/pro-v4-font-face.min.css?token=e1bbd40aec — 200 — 1.8 KiB — 67 ms — h2https://kit.fontawesome.com/e1bbd40aec/109883305/kit-upload.csskit.fontawesome.com/e1bbd40aec/1098... https://kit.fontawesome.com/e1bbd40aec/109883305/kit-upload.css — 200 — 137 B — 38 ms — h2https://builtin.com/cdn-cgi/challenge-platform/scripts/jsd/main.js/cdn-cgi/challenge-platform/scripts... https://builtin.com/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 452 B — 75 ms — h3https://api.builtin.com/track/identityapi.builtin.com/track/identity https://api.builtin.com/track/identity — 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h2https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-18.woff2ka-p.fontawesome.com/releases/v6.7.... https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-18.woff2 — 200 — 19.1 KiB — 57 ms — h2https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-2.woff2ka-p.fontawesome.com/releases/v6.7.... https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-2.woff2 — 200 — 21.4 KiB — 54 ms — h2https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-13.woff2ka-p.fontawesome.com/releases/v6.7.... https://ka-p.fontawesome.com/releases/v6.7.2/webfonts/pro-fa-solid-900-13.woff2 — 200 — 13.4 KiB — 52 ms — h2https://builtin.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?/cdn-cgi/challenge-platform/h/b/scr... https://builtin.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? — 200 — 14.0 KiB — 24 ms — h3https://accounts.google.com/gsi/styleaccounts.google.com/gsi/style https://accounts.google.com/gsi/style — 200 — 643 B — 33 ms — h2https://cmp.osano.com/IhL2ZuL9KH/7e65777c-dfd4-48c4-8e6e-a21df7f3237e/osano.jscmp.osano.com/IhL2ZuL9KH/7e65777c-d... https://cmp.osano.com/IhL2ZuL9KH/7e65777c-dfd4-48c4-8e6e-a21df7f3237e/osano.js — 200 — 69.3 KiB — 63 ms — h3https://www.googletagmanager.com/gtag/js?id=G-VE30Y87RZ9&cx=c&gtm=4e64h1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-VE30Y87RZ9&cx=c&gtm=4e64h1 — 200 — 156.0 KiB — 53 ms — h2https://builtin.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/0b8fb825cb67/0.9554077391725713:1776816681:3RMSvTX9aWW6mfNoQJc2PUHK-15iU2UtITg63dWewiU/9f00ac4f4b85d122/cdn-cgi/challenge-platform/h/b/jsd... https://builtin.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/0b8fb825cb67/0.9554077391725713:1776816681:3RMSvTX9aWW6mfNoQJc2PUHK-15iU2UtITg63dWewiU/9f00ac4f4b85d122 — 200 — 1.2 KiB — 22 ms — h3https://api.builtin.com/track/client-eventsapi.builtin.com/track/client-events https://api.builtin.com/track/client-events — 200 — 0 B — 755 ms — h3blob:https://builtin.com/8e7ac14f-4990-491f-bc3f-76baaeb3dcc1builtin.com/8e7ac14f-4990-491f-bc3f... blob:https://builtin.com/8e7ac14f-4990-491f-bc3f-76baaeb3dcc1 — 200 — -1 B — 38 ms — blobhttps://cmp.osano.com/cmp.osano.com/ https://cmp.osano.com/ — 200 — 1.2 KiB — 41 ms — h3https://accounts.google.com/gsi/log?client_id=941473408521-r82mlse6rh2ar9loff8bgnbqtbp6inrs.apps.googleusercontent.com&as=5kSlvax%2FeDoYv99%2Bc2fQ4JhoeTN8%2FDcYPyMVF4HWIBw&bs=fx8b2AkxYyxflFjSUQM02J8sNT%2Bv8OoUcq9rdbVQYb4&event=onetap.card.prompt.apiCall&enable_itp_optimization=19accounts.google.com/gsi/log?client_... https://accounts.google.com/gsi/log?client_id=941473408521-r82mlse6rh2ar9loff8bgnbqtbp6inrs.apps.googleusercontent.com&as=5kSlvax%2FeDoYv99%2Bc2fQ4JhoeTN8%2FDcYPyMVF4HWIBw&bs=fx8b2AkxYyxflFjSUQM02J8sNT%2Bv8OoUcq9rdbVQYb4&event=onetap.card.prompt.apiCall&enable_itp_optimization=19 — 200 — 23 B — 53 ms — 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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
46% of JavaScript execution is third-party
First-party Third-party 258ms · 321KB · €3/mo
Unattributable
Other
Optional
Execution 90ms
Transfer 0 KB
Monthly Cost €1/mo
cmp.osano.com
Other
Optional
Execution 59ms
Transfer 69 KB
Unused 33%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 59ms
Transfer 156 KB
Unused 40%
Monthly Cost €1/mo
accounts.google.com
Other
Optional
Execution 50ms
Transfer 96 KB
Unused 71%
Monthly Cost €1/mo

46% 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

71% of accounts.google.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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