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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
26
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

10.02 s

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

20.39 s

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

2.22 s

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

0.076

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

10.68 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.

22.06 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
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
2.9 MB transferred, 122 requests
FIX
2.9 MB transferred, 122 requests
Warning::
Page weighs 8.3 MB (2.9 MB transferred)
Warning::
JavaScript is 2.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.4 MB
Warning::
122 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.61 g CO2 per page load
2.9 MB / 2.4 MB budget
2.9 MB transferred
122 requests
0.61 g CO2 per page load
JavaScript 2.4 MiB 84%
Images 173.5 KiB 6%
Fonts 154.6 KiB 5%
HTML 55.4 KiB 2%
Other 42.9 KiB 1%
Other 27.7 KiB 1%
Other 18.4 KiB 1%
Other 225 B 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 (2.9 MiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
7696ms total JS execution
FIX
7696ms total JS execution
Warning::
https://rvo-cohesion.medicalnewstoday.com/cohesion...: 1422ms CPU time
Warning::
Unattributable: 1202ms CPU time
Warning::
https://prod.adspsp.com/adb.2418030m.cr.js?c=Cx045...: 649ms CPU time
Warning::
https://cdn.confiant-integrations.net/gptprebidnat...: 530ms CPU time
Warning::
https://assets.medicalnewstoday.com/_next/4331d740...: 494ms CPU time
Warning::
Third-party scripts: 7696ms (100% of total)

Main Thread Breakdown

Script Evaluation 65% Other 15% Script Parsing & Compilation 11% Style & Layout 6%
ScriptTotalScriptingParse/CompileParty
https://rvo-cohesion.medicalnewstoday.com/cohesion/cohesion-tpo.min.js?cDomain=medicalnewstoday.com1422ms1330ms14ms3rd
Unattributable1202ms237ms0ms3rd
https://prod.adspsp.com/adb.2418030m.cr.js?c=Cx04533cf4:mo8tqq8j:20649ms610ms24ms3rd
https://cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js530ms416ms49ms3rd
https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/lib.js494ms193ms74ms3rd
https://www.medicalnewstoday.com/433ms47ms18ms3rd
https://gtm-server.healthline.com/gtag/js?id=G-930KV6HDTB&cx=c&gtm=4e64k0h2&sign=e7e8a5ac2749c76ad4cc1740dc3d9d1285e44da1f63f242a086873a515f0036b_20260421423ms358ms60ms3rd
https://gtm-server.healthline.com/gtm.js?id=GTM-MB6365D367ms299ms64ms3rd
https://prod.adspsp.com/adb.2418030m.pb.js?c=Cx04533cf4:mo8tqq8j:20361ms260ms58ms3rd
https://client.aps.amazon-adsystem.com/publisher.js316ms221ms42ms3rd

Showing top 10 of 25 scripts

F
JS Bundles
Action
46 scripts, 1.4 MB unused
FIX
46 scripts, 1.4 MB unused
Warning::
https://assets.medicalnewstoday.com/_next/4331d740...: 354 KB unused (88%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.medicalnewstoday.com/_next/4331d740...: 177 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 141 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.medicalnewstoday.com/_next/4331d740...: 107 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://prod.adspsp.com/adb.2418030m.pb.js?c=Cx045...: 105 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.4 MB
1400 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/felib.js402 KB354 KB (88%)✓3rd
https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/lib.js251 KB177 KB (71%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js188 KB141 KB (75%)✓3rd
https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/vendor.js171 KB107 KB (63%)✓3rd
https://prod.adspsp.com/adb.2418030m.pb.js?c=Cx04533cf4:mo8tqq8j:20155 KB105 KB (68%)✓3rd
https://cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js142 KB87 KB (62%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js128 KB84 KB (65%)✓3rd
https://gtm-server.healthline.com/gtag/js?id=G-930KV6HDTB&cx=c&gtm=4e64k0h2&sign=e7e8a5ac2749c76ad4cc1740dc3d9d1285e44da1f63f242a086873a515f0036b_20260421205 KB82 KB (40%)✓3rd
https://gtm-server.healthline.com/gtm.js?id=GTM-MB6365D164 KB70 KB (43%)✓3rd
https://client.aps.amazon-adsystem.com/publisher.js82 KB45 KB (55%)✓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
122 resources · 2.9 MB · 1.4 MB savings available
FIX
122 resources · 2.9 MB · 1.4 MB savings available
Warning::
Page weight 1.9 MB over 1MB target
Got: 2.9 MB Expected: ≤ 1 MB
Info::
~1.4 MB of savings available
Warning::
121 third-party resources (100% of weight)
Info::
3 resources over 200KB
122 resources · 2.9 MiB · 121 third-party 1.9 MiB over 1MB target
JavaScript 84% · 2.4 MiB
Image 6% · 176.8 KiB
Font 5% · 154.6 KiB
Other 3% · 78.2 KiB
Document 2% · 55.4 KiB
CSS 0% · 4.7 KiB

~1.4 MiB of savings available

Remove unused JavaScript: 1.4 MiB
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
Image Optimization
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Info::
All images are well-optimized
13 images 173 KB
0 oversized -0 KB
7 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
5 fonts (155 KB)
PASS
5 fonts (155 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

155 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s FCP 10.0 s LCP 20.4 shttps://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_7_0.woff232A982_7_0.woff2 https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_7_0.woff2 — 34.8 KiB — 118 ms — font-display: swaphttps://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_9_0.woff232A982_9_0.woff2 https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_9_0.woff2 — 34.3 KiB — 54 ms — font-display: swaphttps://assets.medicalnewstoday.com/fonts/proxima/v1/38C507_0_0.woff238C507_0_0.woff2 https://assets.medicalnewstoday.com/fonts/proxima/v1/38C507_0_0.woff2 — 41.0 KiB — 109 ms — font-display: swaphttps://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_1_0.woff232A982_1_0.woff2 https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_1_0.woff2 — 34.8 KiB — 7 ms — font-display: swaphttps://www.medicalnewstoday.com/static/fonts/healthline/healthline.woffhealthline.woff https://www.medicalnewstoday.com/static/fonts/healthline/healthline.woff — 9.6 KiB — 171 ms — font-display: swap
32A982_7_0.woff2 woff2 swap
Size 35 KB
Load time 118 ms
Start 334 ms
Risk FOUT — text flashes from fallback to web font
32A982_9_0.woff2 woff2 swap
Size 34 KB
Load time 54 ms
Start 335 ms
Risk FOUT — text flashes from fallback to web font
38C507_0_0.woff2 woff2 swap
Size 41 KB
Load time 109 ms
Start 335 ms
Risk FOUT — text flashes from fallback to web font
32A982_1_0.woff2 woff2 swap
Size 35 KB
Load time 7 ms
Start 513 ms
Risk FOUT — text flashes from fallback to web font
healthline.woff woff swap
Size 10 KB
Load time 171 ms
Start 514 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~3 KB and ~6 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
19 hints, 0 missing preconnects
PASS
19 hints, 0 missing preconnects
Info::
Page uses 19 resource hint(s)

Current Resource Hints

preconnect
2
preload
+7
17
dns-prefetch
—
prefetch
—

19 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
Network Waterfall
122 requests over 3855ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s FCP 10.0 s LCP 20.4 shttps://medicalnewstoday.com// https://medicalnewstoday.com/ — 301 — 244 B — 11 ms — h2https://www.medicalnewstoday.com/www.medicalnewstoday.com/ https://www.medicalnewstoday.com/ — 200 — 47.7 KiB — 354 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/vendor.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/vendor.js — 200 — 170.7 KiB — 45 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/lib.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/lib.js — 200 — 251.1 KiB — 104 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/page-widgets.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/page-widgets.js — 200 — 35.1 KiB — 59 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/felib.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/felib.js — 200 — 402.3 KiB — 136 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/felib-core.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/felib-core.js — 200 — 6.2 KiB — 99 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/pages/home-page.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/pages/home-page.js — 200 — 4.9 KiB — 117 ms — h2https://cdn.cookielaw.org/scripttemplates/gpp.stub.jscdn.cookielaw.org/scripttemplates/g... https://cdn.cookielaw.org/scripttemplates/gpp.stub.js — 200 — 2.1 KiB — 35 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — 200 — 8.8 KiB — 36 ms — h2https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_7_0.woff2assets.medicalnewstoday.com/fonts/p... https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_7_0.woff2 — 200 — 34.8 KiB — 118 ms — h2https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_9_0.woff2assets.medicalnewstoday.com/fonts/p... https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_9_0.woff2 — 200 — 34.3 KiB — 54 ms — h2https://assets.medicalnewstoday.com/fonts/proxima/v1/38C507_0_0.woff2assets.medicalnewstoday.com/fonts/p... https://assets.medicalnewstoday.com/fonts/proxima/v1/38C507_0_0.woff2 — 200 — 41.0 KiB — 109 ms — h2https://config.aps.amazon-adsystem.com/configs/3083config.aps.amazon-adsystem.com/conf... https://config.aps.amazon-adsystem.com/configs/3083 — 200 — 1.7 KiB — 40 ms — h2https://client.aps.amazon-adsystem.com/publisher.jsclient.aps.amazon-adsystem.com/publ... https://client.aps.amazon-adsystem.com/publisher.js — 200 — 82.2 KiB — 85 ms — h2https://cdn.cookielaw.org/consent/9b54d80c-2000-43bf-9670-aab208be0254/9b54d80c-2000-43bf-9670-aab208be0254.jsoncdn.cookielaw.org/consent/9b54d80c-... https://cdn.cookielaw.org/consent/9b54d80c-2000-43bf-9670-aab208be0254/9b54d80c-2000-43bf-9670-aab208be0254.json — 200 — 2.7 KiB — 63 ms — h2https://prod.adspsp.com/adb.2418030m.min.jsprod.adspsp.com/adb.2418030m.min.js https://prod.adspsp.com/adb.2418030m.min.js — 200 — 1.6 KiB — 45 ms — http/1.1https://securepubads.g.doubleclick.net/tag/js/gpt.jssecurepubads.g.doubleclick.net/tag/... https://securepubads.g.doubleclick.net/tag/js/gpt.js — 200 — 34.0 KiB — 55 ms — h3https://rvo-cohesion.medicalnewstoday.com/cohesion/cohesion-tpo.min.js?cDomain=medicalnewstoday.comrvo-cohesion.medicalnewstoday.com/c... https://rvo-cohesion.medicalnewstoday.com/cohesion/cohesion-tpo.min.js?cDomain=medicalnewstoday.com — 200 — 29.5 KiB — 60 ms — h2https://gtm-server.healthline.com/gtm.js?id=GTM-MB6365Dgtm-server.healthline.com/gtm.js?id... https://gtm-server.healthline.com/gtm.js?id=GTM-MB6365D — 200 — 163.7 KiB — 139 ms — h2https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_1_0.woff2assets.medicalnewstoday.com/fonts/p... https://assets.medicalnewstoday.com/fonts/proxima/v1/32A982_1_0.woff2 — 200 — 34.8 KiB — 7 ms — h2https://www.medicalnewstoday.com/static/fonts/healthline/healthline.woffwww.medicalnewstoday.com/static/fon... https://www.medicalnewstoday.com/static/fonts/healthline/healthline.woff — 200 — 9.6 KiB — 171 ms — h2https://geolocation.onetrust.com/cookieconsentpub/v1/geo/locationgeolocation.onetrust.com/cookiecons... https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location — 200 — 307 B — 35 ms — h2https://c.amazon-adsystem.com/bao-csm/aps-comm/aps_csm.jsc.amazon-adsystem.com/bao-csm/aps-c... https://c.amazon-adsystem.com/bao-csm/aps-comm/aps_csm.js — 200 — 3.1 KiB — 13 ms — h2https://ingest.make.rvohealth.com/v2/tingest.make.rvohealth.com/v2/t https://ingest.make.rvohealth.com/v2/t — 204 — 0 B — 57 ms — h2https://ingest.make.rvohealth.com/v2/tingest.make.rvohealth.com/v2/t https://ingest.make.rvohealth.com/v2/t — 204 — 0 B — 56 ms — h2https://ingest.make.rvohealth.com/v2/tingest.make.rvohealth.com/v2/t https://ingest.make.rvohealth.com/v2/t — 204 — 0 B — 53 ms — h2https://cdn.rvohealth.com/cohesion/ext/experimental.min.jscdn.rvohealth.com/cohesion/ext/expe... https://cdn.rvohealth.com/cohesion/ext/experimental.min.js — 200 — 4.2 KiB — 45 ms — h2https://cdn.rvohealth.com/preamp/api/v1/decisionscdn.rvohealth.com/preamp/api/v1/dec... https://cdn.rvohealth.com/preamp/api/v1/decisions — 200 — 1.2 KiB — 60 ms — h2https://www.medicalnewstoday.com/navi/reinforce?&domain=medicalnewstoday.comwww.medicalnewstoday.com/navi/reinf... https://www.medicalnewstoday.com/navi/reinforce?&domain=medicalnewstoday.com — 200 — 519 B — 170 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s FCP 10.0 s LCP 20.4 shttps://medicalnewstoday.com// https://medicalnewstoday.com/ — 301 — 244 B — 11 ms — h2https://www.medicalnewstoday.com/www.medicalnewstoday.com/ https://www.medicalnewstoday.com/ — 200 — 47.7 KiB — 354 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/vendor.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/vendor.js — 200 — 170.7 KiB — 45 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/lib.jsassets.medicalnewstoday.com/_next/4... https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/lib.js — 200 — 251.1 KiB — 104 ms — h2https://assets.medicalnewstoday.com/_next/4331d740-2698-49a4-beb4-128e3470bb78/mnt/page-widgets.jsassets.medicalnewstoday.com/_next/4... 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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 7696ms · 2381KB · €84/mo
rvo-cohesion.medicalnewstoday.com
Other
Costly
Execution 1422ms
Transfer 29 KB
Monthly Cost €15/mo
Unattributable
Other
Costly
Execution 1202ms
Transfer 0 KB
Monthly Cost €13/mo
prod.adspsp.com
Other
Costly
Execution 649ms
Transfer 73 KB
Unused 45%
Monthly Cost €7/mo
cdn.confiant-integrations.net
Other
Costly
Execution 530ms
Transfer 142 KB
Unused 62%
Monthly Cost €6/mo
assets.medicalnewstoday.com
Other
Costly
Execution 494ms
Transfer 251 KB
Unused 71%
Monthly Cost €5/mo
www.medicalnewstoday.com
Other
Costly
Execution 433ms
Transfer 48 KB
Monthly Cost €5/mo
gtm-server.healthline.com
Other
Costly
Execution 423ms
Transfer 205 KB
Unused 40%
Monthly Cost €5/mo
gtm-server.healthline.com
Other
Costly
Execution 367ms
Transfer 164 KB
Unused 43%
Monthly Cost €4/mo
prod.adspsp.com
Other
Costly
Execution 361ms
Transfer 155 KB
Unused 68%
Monthly Cost €4/mo
client.aps.amazon-adsystem.com
Other
Costly
Execution 316ms
Transfer 82 KB
Unused 55%
Monthly Cost €3/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 260ms
Transfer 188 KB
Unused 75%
Monthly Cost €3/mo
ats-wrapper.privacymanager.io
Other
Optional
Execution 152ms
Transfer 75 KB
Unused 50%
Monthly Cost €2/mo
assets.medicalnewstoday.com
Other
Optional
Execution 127ms
Transfer 171 KB
Unused 63%
Monthly Cost €1/mo
OneTrust
Consent
Essential
Execution 109ms
Transfer 128 KB
Unused 65%
Monthly Cost €1/mo
pub.doubleverify.com
Other
Optional
Execution 103ms
Transfer 31 KB
Monthly Cost €1/mo
assets.medicalnewstoday.com
Other
Optional
Execution 101ms
Transfer 13 KB
Monthly Cost €1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 97ms
Transfer 34 KB
Monthly Cost €1/mo
cdn.id5-sync.com
Other
Optional
Execution 90ms
Transfer 35 KB
Monthly Cost €1/mo
OneTrust
Consent
Essential
Execution 84ms
Transfer 9 KB
Monthly Cost €1/mo
cdn-ima.33across.com
Other
Optional
Execution 75ms
Transfer 7 KB
Monthly Cost €1/mo
cdn.confiant-integrations.net
Other
Optional
Execution 67ms
Transfer 65 KB
Monthly Cost €1/mo
OneTrust
Consent
Essential
Execution 64ms
Transfer 2 KB
Monthly Cost €1/mo
secure.cdn.fastclick.net
Other
Optional
Execution 60ms
Transfer 22 KB
Monthly Cost €1/mo
cdn.btmessage.com
Other
Optional
Execution 59ms
Transfer 51 KB
Unused 60%
Monthly Cost €1/mo
assets.medicalnewstoday.com
Other
Optional
Execution 50ms
Transfer 402 KB
Unused 88%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • rvo-cohesion.medicalnewstoday.com adds 1422ms and costs ~€15/month
  • Unattributable adds 1202ms and costs ~€13/month
  • prod.adspsp.com adds 649ms and costs ~€7/month
  • cdn.confiant-integrations.net adds 530ms and costs ~€6/month
  • assets.medicalnewstoday.com adds 494ms and costs ~€5/month
  • www.medicalnewstoday.com adds 433ms and costs ~€5/month
  • gtm-server.healthline.com adds 423ms and costs ~€5/month
  • gtm-server.healthline.com adds 367ms and costs ~€4/month
  • prod.adspsp.com adds 361ms and costs ~€4/month
  • client.aps.amazon-adsystem.com adds 316ms and costs ~€3/month
  • securepubads.g.doubleclick.net adds 260ms 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

rvo-cohesion.medicalnewstoday.com takes 1422ms 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 1202ms 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

prod.adspsp.com takes 649ms 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.confiant-integrations.net takes 530ms 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.confiant-integrations.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.medicalnewstoday.com takes 494ms 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

71% of assets.medicalnewstoday.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

www.medicalnewstoday.com takes 433ms 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

gtm-server.healthline.com takes 423ms 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

gtm-server.healthline.com takes 367ms 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

prod.adspsp.com takes 361ms 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

68% of prod.adspsp.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

client.aps.amazon-adsystem.com takes 316ms 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

55% of client.aps.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

securepubads.g.doubleclick.net takes 260ms 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

75% 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

63% of assets.medicalnewstoday.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 OneTrust'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

60% of cdn.btmessage.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

88% of assets.medicalnewstoday.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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