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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
85
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
98
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

2.29 s

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

3.14 s

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

288 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.

2.29 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.

5.72 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
10 PASS 3 REVIEW 2 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 (577.0 KiB of 577.0 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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
4 images, 0 KB saveable
REVIEW
4 images, 0 KB saveable
Warning::
https://www.newswise.com/assets/newTheme/img/logo-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
4 images 8 KB
0 oversized -0 KB
3 legacy format
1 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

B
JS Execution Cost
897ms total JS execution
REVIEW
897ms total JS execution
Warning::
https://www.googletagmanager.com/gtag/js?id=G-8NWK...: 296ms CPU time
Info::
https://www.newswise.com/: 238ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-WH9...: 153ms CPU time
Info::
Unattributable: 133ms CPU time
Info::
https://www.newswise.com/cdn-cgi/scripts/7d0fa10a/...: 77ms CPU time
Warning::
Third-party scripts: 897ms (100% of total)

Main Thread Breakdown

Script Evaluation 51% Style & Layout 17% Other 16% Script Parsing & Compilation 10% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-8NWKVEHW7E&cx=c&gtm=4e64k1296ms249ms42ms3rd
https://www.newswise.com/238ms5ms1ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WH9TSCN153ms119ms33ms3rd
Unattributable133ms6ms0ms3rd
https://www.newswise.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js77ms72ms3ms3rd
B
JS Bundles
13 scripts, 150 KB unused
REVIEW
13 scripts, 150 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-8NWK...: 67 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-WH9...: 63 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.newswise.com/assets/newTheme/bootstrap...: 20 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 150 KB
150 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-8NWKVEHW7E&cx=c&gtm=4e64k1178 KB67 KB (38%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WH9TSCN123 KB63 KB (51%)✓3rd
https://www.newswise.com/assets/newTheme/bootstrap/js/bootstrap.bundle.min.js24 KB20 KB (84%)✓3rd
https://www.newswise.com/assets/new/js/plugins.js0 KB—✓3rd
https://www.newswise.com/assets/new/js/bootstrap.min.js16 KB—✓3rd
https://www.newswise.com/assets/new/js/main.js1 KB—✓3rd
https://www.newswise.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js4 KB—✓3rd
https://www.newswise.com/assets/new/js/3.3.1-jquery.min.js31 KB—✓3rd
https://www.newswise.com/assets/new/js/jquery-3.3.1.slim.min.js25 KB—✓3rd
https://www.newswise.com/assets/newTheme/js/main.js1 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

A+
Page Weight Budget
577 KB transferred, 28 requests
PASS
577 KB transferred, 28 requests
Info::
Page weighs 1.7 MB (577 KB transferred)
Info::
28 HTTP requests
Info::
Estimated 0.12 g CO2 per page load
577 KB / 2.4 MB budget
577 KB transferred
28 requests
0.12 g CO2 per page load
JavaScript 427.3 KiB 74%
Fonts 75.6 KiB 13%
CSS 43.8 KiB 8%
HTML 18.3 KiB 3%
Images 8.0 KiB 1%
Other 2.9 KiB 0%
Other 559 B 0%
Other 550 B 0%
Other 162 B 0%
0 2.4 MB 4.9 MB
Under budget
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
1 fonts (76 KB)
PASS
1 fonts (76 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

76 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.3 s LCP 3.1 shttps://www.newswise.com/assets/new/fonts/font-awesome/fonts/fontawesome-webfont.woff2?v=4.7.0fontawesome-webfont.woff2 https://www.newswise.com/assets/new/fonts/font-awesome/fonts/fontawesome-webfont.woff2?v=4.7.0 — 75.6 KiB — 35 ms — font-display: swap
fontawesome-webfont.woff2 unknown swap
Size 76 KB
Load time 35 ms
Start 677 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 ~23 KB and ~46 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
5 hints, 0 missing preconnects
PASS
5 hints, 0 missing preconnects
Info::
Page uses 5 resource hint(s)

Current Resource Hints

preconnect
2
preload
3
dns-prefetch
—
prefetch
—

5 resource hints configured

A
Page Weight Inventory
28 resources · 577 KB · 150 KB savings available
PASS
28 resources · 577 KB · 150 KB savings available
Info::
Within 1MB page-weight target
Got: 577 KB
Info::
~150 KB of savings available
Warning::
27 third-party resources (100% of weight)
28 resources · 577.0 KiB · 27 third-party Within 1MB page-weight target
JavaScript 74% · 427.3 KiB
Font 13% · 75.6 KiB
CSS 8% · 43.8 KiB
Document 3% · 18.3 KiB
Image 2% · 10.7 KiB
Other 0% · 1.3 KiB

~149.7 KiB of savings available

Remove unused JavaScript: 149.7 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
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
28 requests over 1137ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 2.3 s LCP 3.1 shttps://newswise.com// https://newswise.com/ — 301 — 96 B — 61 ms — h2https://www.newswise.com/www.newswise.com/ https://www.newswise.com/ — 200 — 18.3 KiB — 485 ms — h2https://www.newswise.com/assets/new/fonts/font-awesome/css/font-awesome.min.csswww.newswise.com/assets/new/fonts/f... https://www.newswise.com/assets/new/fonts/font-awesome/css/font-awesome.min.css — 200 — 7.3 KiB — 31 ms — h2https://www.newswise.com/assets/newTheme/css/home.csswww.newswise.com/assets/newTheme/cs... https://www.newswise.com/assets/newTheme/css/home.css — 200 — 9.0 KiB — 34 ms — h2https://www.newswise.com/assets/newTheme/css/skin_v1.csswww.newswise.com/assets/newTheme/cs... https://www.newswise.com/assets/newTheme/css/skin_v1.css — 200 — 2.0 KiB — 33 ms — h2https://www.newswise.com/assets/newTheme/img/logo-newSkin.pngwww.newswise.com/assets/newTheme/im... https://www.newswise.com/assets/newTheme/img/logo-newSkin.png — 200 — 4.6 KiB — 31 ms — h2https://www.newswise.com/assets/new/img/rss-icon-logo.webpwww.newswise.com/assets/new/img/rss... https://www.newswise.com/assets/new/img/rss-icon-logo.webp — 200 — 3.0 KiB — 34 ms — h2https://www.newswise.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.jswww.newswise.com/cdn-cgi/scripts/7d... https://www.newswise.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js — 200 — 4.1 KiB — 24 ms — h2https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 104 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-WH9TSCNwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-WH9TSCN — 200 — 123.5 KiB — 193 ms — h2https://www.newswise.com/assets/newTheme/bootstrap/css/bootstrap.min.csswww.newswise.com/assets/newTheme/bo... https://www.newswise.com/assets/newTheme/bootstrap/css/bootstrap.min.css — 200 — 25.5 KiB — 28 ms — h2https://static.cloudflareinsights.com/beacon.min.jsstatic.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js — 200 — 10.7 KiB — 77 ms — h2https://www.newswise.com/assets/new/js/bootstrap.min.jswww.newswise.com/assets/new/js/boot... https://www.newswise.com/assets/new/js/bootstrap.min.js — 200 — 16.4 KiB — 28 ms — h2https://www.newswise.com/assets/new/js/main.jswww.newswise.com/assets/new/js/main... https://www.newswise.com/assets/new/js/main.js — 200 — 1.2 KiB — 38 ms — h2https://www.newswise.com/assets/new/js/plugins.jswww.newswise.com/assets/new/js/plug... https://www.newswise.com/assets/new/js/plugins.js — 200 — 493 B — 31 ms — h2https://www.newswise.com/assets/new/js/3.3.1-jquery.min.jswww.newswise.com/assets/new/js/3.3.... https://www.newswise.com/assets/new/js/3.3.1-jquery.min.js — 200 — 31.5 KiB — 34 ms — h2https://www.newswise.com/assets/new/js/jquery-3.3.1.slim.min.jswww.newswise.com/assets/new/js/jque... https://www.newswise.com/assets/new/js/jquery-3.3.1.slim.min.js — 200 — 25.1 KiB — 40 ms — h2https://www.newswise.com/assets/newTheme/js/main.jswww.newswise.com/assets/newTheme/js... https://www.newswise.com/assets/newTheme/js/main.js — 200 — 1.4 KiB — 29 ms — h2https://www.newswise.com/assets/newTheme/js/plugins.jswww.newswise.com/assets/newTheme/js... https://www.newswise.com/assets/newTheme/js/plugins.js — 200 — 525 B — 36 ms — h2https://www.newswise.com/assets/newTheme/bootstrap/js/bootstrap.bundle.min.jswww.newswise.com/assets/newTheme/bo... https://www.newswise.com/assets/newTheme/bootstrap/js/bootstrap.bundle.min.js — 200 — 24.1 KiB — 48 ms — h2https://www.newswise.com/assets/new/fonts/font-awesome/fonts/fontawesome-webfont.woff2?v=4.7.0www.newswise.com/assets/new/fonts/f... https://www.newswise.com/assets/new/fonts/font-awesome/fonts/fontawesome-webfont.woff2?v=4.7.0 — 200 — 75.6 KiB — 35 ms — h2https://www.googletagmanager.com/gtag/js?id=G-8NWKVEHW7E&cx=c&gtm=4e64k1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-8NWKVEHW7E&cx=c&gtm=4e64k1 — 200 — 177.5 KiB — 68 ms — h2https://region1.analytics.google.com/g/collect?v=2&tid=G-8NWKVEHW7E&gtm=45je64k1v898122046z8830719058za20gzb830719058zd830719058&_p=1776901865322&_gaz=1&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&_eu=AAAAAGA&are=1&cid=174277157.1776901866&frm=0&pscdl=noapi&rcb=10&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938468~117266401~117512543&sid=1776901865&sct=1&seg=0&dl=https%3A%2F%2Fwww.newswise.com%2F&dt=Newswise%20%7C%20Leading%20Source%20of%20Research%20News&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=941region1.analytics.google.com/g/coll... https://region1.analytics.google.com/g/collect?v=2&tid=G-8NWKVEHW7E&gtm=45je64k1v898122046z8830719058za20gzb830719058zd830719058&_p=1776901865322&_gaz=1&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&_eu=AAAAAGA&are=1&cid=174277157.1776901866&frm=0&pscdl=noapi&rcb=10&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938468~117266401~117512543&sid=1776901865&sct=1&seg=0&dl=https%3A%2F%2Fwww.newswise.com%2F&dt=Newswise%20%7C%20Leading%20Source%20of%20Research%20News&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=941 — 204 — 550 B — 115 ms — h2https://stats.g.doubleclick.net/g/collect?v=2&tid=G-8NWKVEHW7E&cid=174277157.1776901866&gtm=45je64k1v898122046z8830719058za20gzb830719058zd830719058&rcb=10&aip=1&dma=1&dma_cps=a&gcd=13l3l3l2l1l1&npa=1&frm=0&tag_exp=0~115616985~115938465~115938468~117266401~117512543stats.g.doubleclick.net/g/collect?v... https://stats.g.doubleclick.net/g/collect?v=2&tid=G-8NWKVEHW7E&cid=174277157.1776901866&gtm=45je64k1v898122046z8830719058za20gzb830719058zd830719058&rcb=10&aip=1&dma=1&dma_cps=a&gcd=13l3l3l2l1l1&npa=1&frm=0&tag_exp=0~115616985~115938465~115938468~117266401~117512543 — 204 — 559 B — 90 ms — h2https://www.googletagmanager.com/td?id=G-8NWKVEHW7E&v=3&t=t&pid=356864749&gtm=45je64k1v898122046za20gzb830719058zd830719058&seq=1&exp=0~115616985~115938465~115938468~117266401&dl=www.newswise.com%2F&tdp=G-8NWKVEHW7E;98122046;1;6;0&frm=0&rtg=30719058&slo=2&hlo=1&lst=1&pcid=30719058&bt=0&ct=3&z=0www.googletagmanager.com/td?id=G-8N... https://www.googletagmanager.com/td?id=G-8NWKVEHW7E&v=3&t=t&pid=356864749&gtm=45je64k1v898122046za20gzb830719058zd830719058&seq=1&exp=0~115616985~115938465~115938468~117266401&dl=www.newswise.com%2F&tdp=G-8NWKVEHW7E;98122046;1;6;0&frm=0&rtg=30719058&slo=2&hlo=1&lst=1&pcid=30719058&bt=0&ct=3&z=0 — 204 — 18 B — 30 ms — h3https://www.google.es/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-8NWKVEHW7E&cid=174277157.1776901866&gtm=45je64k1v898122046z8830719058za20gzb830719058zd830719058&rcb=10&aip=1&dma=1&dma_cps=a&gcd=13l3l3l2l1l1&npa=1&frm=0&tag_exp=0~115616985~115938465~115938468~117266401~117512543&z=1776917695www.google.es/ads/ga-audiences?v=1&... https://www.google.es/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-8NWKVEHW7E&cid=174277157.1776901866&gtm=45je64k1v898122046z8830719058za20gzb830719058zd830719058&rcb=10&aip=1&dma=1&dma_cps=a&gcd=13l3l3l2l1l1&npa=1&frm=0&tag_exp=0~115616985~115938465~115938468~117266401~117512543&z=1776917695 — 200 — 408 B — 119 ms — h2https://www.newswise.com/favicon-32x32.pngwww.newswise.com/favicon-32x32.png https://www.newswise.com/favicon-32x32.png — 200 — 2.8 KiB — 27 ms — h2https://www.newswise.com/cdn-cgi/rum?www.newswise.com/cdn-cgi/rum? https://www.newswise.com/cdn-cgi/rum? — 204 — 162 B — 22 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 897ms · 324KB · €10/mo
Google Tag Manager
Tag Manager
Costly
Execution 296ms
Transfer 178 KB
Unused 38%
Monthly Cost €3/mo
www.newswise.com
Other
Costly
Execution 238ms
Transfer 18 KB
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Optional
Execution 153ms
Transfer 123 KB
Unused 51%
Monthly Cost €2/mo
Unattributable
Other
Optional
Execution 133ms
Transfer 0 KB
Monthly Cost €1/mo
www.newswise.com
Other
Optional
Execution 77ms
Transfer 4 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 296ms and costs ~€3/month
  • www.newswise.com adds 238ms 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

Google Tag Manager takes 296ms 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.newswise.com takes 238ms 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

51% of Google Tag Manager'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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