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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
67
GRADE
D
FIX
5
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
64
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.

906 ms

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

7.69 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.

0.136

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

2.48 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.

7.76 s

Page Load Progression

398 ms
796 ms
1.2 s
1.6 s
2.0 s
2.4 s
2.8 s
3.2 s
Checks
15
6 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
10.6 MB transferred, 105 requests
FIX
10.6 MB transferred, 105 requests
Critical::
Page weighs 14.8 MB (10.6 MB transferred)
Warning::
Images are 5.4 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 5.4 MB
Info::
Fonts are 3.7 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 3.7 MB
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Warning::
105 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 2.2 g CO2 per page load
10.6 MB / 2.4 MB budget
10.6 MB transferred
105 requests
2.2 g CO2 per page load
Images 5.4 MiB 51%
Fonts 3.7 MiB 35%
JavaScript 1.1 MiB 10%
Other 234.2 KiB 2%
CSS 110.2 KiB 1%
HTML 75.8 KiB 1%
Other 5.9 KiB 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

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

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 (10.6 MiB of 10.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
17 scripts, 861 KB unused
FIX
17 scripts, 861 KB unused
Warning::
https://www.gatesfoundation.org/Areas/GFO/assets/j...: 188 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 162 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 162 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 162 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 162 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 861 KB
861 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687287 KB188 KB (66%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB162 KB (45%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js0 KB162 KB (45%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js0 KB162 KB (45%)✓3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362 KB162 KB (45%)✓3rd
https://www.gatesfoundation.org/Areas/GFO/assets/js/index-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b68747 KB26 KB (55%)✓3rd
https://www.gatesfoundation.org/assets/js/text-over-media-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b6872 KB—✓3rd
https://www.gatesfoundation.org/assets/js/tabbed-content-carousel-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b6871 KB—✓3rd
https://www.gatesfoundation.org/assets/js/half-gate-hero-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b6872 KB—✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-TK28RTV199 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
105 resources · 10.6 MB · 861 KB savings available
FIX
105 resources · 10.6 MB · 861 KB savings available
Warning::
Page weight 9.6 MB over 1MB target
Got: 10.6 MB Expected: ≤ 1 MB
Info::
~861 KB of savings available
Warning::
104 third-party resources (100% of weight)
Info::
11 resources over 200KB
105 resources · 10.6 MiB · 104 third-party 9.6 MiB over 1MB target
Image 52% · 5.5 MiB
Font 35% · 3.7 MiB
JavaScript 12% · 1.3 MiB
CSS 1% · 110.2 KiB
Document 1% · 75.8 KiB
Other 0% · 4.8 KiB

~861.3 KiB of savings available

Remove unused JavaScript: 861.3 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

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

C
Image Optimization
Action
40 images, 0 KB saveable
REVIEW
40 images, 0 KB saveable
Warning::
https://www.gatesfoundation.org/-/media/gfo/2home/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gatesfoundation.org/-/media/logos/gf-p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gatesfoundation.org/-/media/gfo/5ideas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gatesfoundation.org/-/media/gfo/5ideas... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gatesfoundation.org/-/media/gfo/2home/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gatesfoundation.org/-/media/gfo/2home/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gatesfoundation.org/-/media/logos/gf-p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
40 images 5.4 MB
0 oversized -0 KB
32 legacy format
7 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

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
954ms total JS execution
REVIEW
954ms total JS execution
Warning::
https://www.gatesfoundation.org/: 452ms CPU time
Info::
Unattributable: 181ms CPU time
Info::
https://www.gstatic.com/recaptcha/releases/gTpTIWh...: 165ms CPU time
Info::
https://www.gatesfoundation.org/Areas/GFO/assets/j...: 96ms CPU time
Info::
https://js-agent.newrelic.com/nr-spa-1.313.1.min.j...: 60ms CPU time
Warning::
Third-party scripts: 954ms (100% of total)

Main Thread Breakdown

Script Evaluation 43% Other 28% Style & Layout 14% Rendering 6% Script Parsing & Compilation 5% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.gatesfoundation.org/452ms181ms5ms3rd
Unattributable181ms2ms0ms3rd
https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js165ms141ms17ms3rd
https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b68796ms11ms21ms3rd
https://js-agent.newrelic.com/nr-spa-1.313.1.min.js60ms49ms2ms3rd
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
28 fonts (3774 KB)
PASS
28 fonts (3774 KB)
Info::
28 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

28

3774 KB total

Render-blocking

0

of 28

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 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 906 ms LCP 7.7 shttps://www.gatesfoundation.org/assets/fonts/NotoSerifDisplay-Medium.woff2NotoSerifDisplay-Medium... https://www.gatesfoundation.org/assets/fonts/NotoSerifDisplay-Medium.woff2 — 129.4 KiB — 97 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-BoldItalic.woff2NotoSerif-BoldItalic.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-BoldItalic.woff2 — 26.3 KiB — 95 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Bold.woff2NotoSerif-Bold.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-Bold.woff2 — 23.7 KiB — 95 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-MediumItalic.woff2NotoSerif-MediumItalic.... https://www.gatesfoundation.org/assets/fonts/NotoSerif-MediumItalic.woff2 — 141.4 KiB — 97 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-bold.woff2NotoSerif-bold.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-bold.woff2 — 23.6 KiB — 96 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-SemiBoldItalic.woff2NotoSerif-SemiBoldItali... https://www.gatesfoundation.org/assets/fonts/NotoSerif-SemiBoldItalic.woff2 — 141.8 KiB — 96 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-SemiBold.woff2NotoSerif-SemiBold.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-SemiBold.woff2 — 128.5 KiB — 101 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Medium.woff2NotoSerif-Medium.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-Medium.woff2 — 128.6 KiB — 106 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Italic.woff2NotoSerif-Italic.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-Italic.woff2 — 133.7 KiB — 107 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Regular.woff2NotoSerif-Regular.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-Regular.woff2 — 122.9 KiB — 107 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-LightItalic.woff2NotoSerif-LightItalic.w... https://www.gatesfoundation.org/assets/fonts/NotoSerif-LightItalic.woff2 — 145.2 KiB — 113 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Light.woff2NotoSerif-Light.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSerif-Light.woff2 — 133.6 KiB — 117 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-LightItalic.woff2NotoSerif-Condensed-Lig... https://www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-LightItalic.woff2 — 195.7 KiB — 118 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-Light.woff2NotoSerif-Condensed-Lig... https://www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-Light.woff2 — 173.7 KiB — 124 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-BlackItalic.woff2NotoSans-ExtraCondensed... https://www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-BlackItalic.woff2 — 199.7 KiB — 128 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-Black.woff2NotoSans-ExtraCondensed... https://www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-Black.woff2 — 194.0 KiB — 130 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedBoldItalic.woff2NotoSans-CondensedBoldI... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedBoldItalic.woff2 — 172.9 KiB — 137 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedBold.woff2NotoSans-CondensedBold.... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedBold.woff2 — 167.7 KiB — 137 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedSemiBoldItalic.woff2NotoSans-CondensedSemiB... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedSemiBoldItalic.woff2 — 173.2 KiB — 141 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedSemiBold.woff2NotoSans-CondensedSemiB... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedSemiBold.woff2 — 167.4 KiB — 145 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedMediumItalic.woff2NotoSans-CondensedMediu... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedMediumItalic.woff2 — 172.9 KiB — 148 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedMedium.woff2NotoSans-CondensedMediu... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedMedium.woff2 — 167.1 KiB — 153 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedItalic.woff2NotoSans-CondensedItali... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedItalic.woff2 — 172.6 KiB — 155 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-Condensed.woff2NotoSans-Condensed.woff2 https://www.gatesfoundation.org/assets/fonts/NotoSans-Condensed.woff2 — 167.5 KiB — 161 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedLightItalic.woff2NotoSans-CondensedLight... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedLightItalic.woff2 — 170.5 KiB — 163 ms — font-display: swaphttps://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedLight.woff2NotoSans-CondensedLight... https://www.gatesfoundation.org/assets/fonts/NotoSans-CondensedLight.woff2 — 166.8 KiB — 163 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 66 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 0 ms — font-display: swap
NotoSerifDisplay-Medium... woff2 swap
Size 129 KB
Load time 97 ms
Start 792 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
NotoSerif-BoldItalic.woff2 woff2 swap
Size 26 KB
Load time 95 ms
Start 792 ms
Risk FOUT — text flashes from fallback to web font
NotoSerif-Bold.woff2 woff2 swap
Size 24 KB
Load time 95 ms
Start 793 ms
Risk FOUT — text flashes from fallback to web font
NotoSerif-MediumItalic.... woff2 swap
Size 141 KB
Load time 97 ms
Start 793 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
NotoSerif-bold.woff2 woff2 swap
Size 24 KB
Load time 96 ms
Start 793 ms
Risk FOUT — text flashes from fallback to web font
NotoSerif-SemiBoldItali... woff2 swap
Size 142 KB
Load time 96 ms
Start 793 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
NotoSerif-SemiBold.woff2 woff2 swap
Size 128 KB
Load time 101 ms
Start 794 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
NotoSerif-Medium.woff2 woff2 swap
Size 129 KB
Load time 106 ms
Start 794 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
NotoSerif-Italic.woff2 woff2 swap
Size 134 KB
Load time 107 ms
Start 794 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
NotoSerif-Regular.woff2 woff2 swap
Size 123 KB
Load time 107 ms
Start 795 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
NotoSerif-LightItalic.w... woff2 swap
Size 145 KB
Load time 113 ms
Start 795 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
NotoSerif-Light.woff2 woff2 swap
Size 134 KB
Load time 117 ms
Start 795 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
NotoSerif-Condensed-Lig... woff2 swap
Size 196 KB
Load time 118 ms
Start 796 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
NotoSerif-Condensed-Lig... woff2 swap
Size 174 KB
Load time 124 ms
Start 796 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
NotoSans-ExtraCondensed... woff2 swap
Size 200 KB
Load time 128 ms
Start 796 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
NotoSans-ExtraCondensed... woff2 swap
Size 194 KB
Load time 130 ms
Start 796 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
NotoSans-CondensedBoldI... woff2 swap
Size 173 KB
Load time 137 ms
Start 797 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
NotoSans-CondensedBold.... woff2 swap
Size 168 KB
Load time 137 ms
Start 797 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
NotoSans-CondensedSemiB... woff2 swap
Size 173 KB
Load time 141 ms
Start 797 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
NotoSans-CondensedSemiB... woff2 swap
Size 167 KB
Load time 145 ms
Start 797 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
NotoSans-CondensedMediu... woff2 swap
Size 173 KB
Load time 148 ms
Start 798 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
NotoSans-CondensedMediu... woff2 swap
Size 167 KB
Load time 153 ms
Start 798 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
NotoSans-CondensedItali... woff2 swap
Size 173 KB
Load time 155 ms
Start 798 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
NotoSans-Condensed.woff2 woff2 swap
Size 168 KB
Load time 161 ms
Start 798 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
NotoSans-CondensedLight... woff2 swap
Size 171 KB
Load time 163 ms
Start 799 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
NotoSans-CondensedLight... woff2 swap
Size 167 KB
Load time 163 ms
Start 799 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
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 66 ms
Start 1.9 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 0 KB
Load time 0 ms
Start 2.6 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~1833 KB and ~3666 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
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
105 requests over 2886ms
INFO
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h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20260310-investing-in-women-jackie-jones/bo690374---dr-stellah-tracks_1600x1000.jpg?rev=001d58c1bd384ddd92700ef59806d585&w=400&hash=0A0DE9F3B7D7B44BFAB5382761E93CBEwww.gatesfoundation.org/-/media/gfo... https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20260310-investing-in-women-jackie-jones/bo690374---dr-stellah-tracks_1600x1000.jpg?rev=001d58c1bd384ddd92700ef59806d585&w=400&hash=0A0DE9F3B7D7B44BFAB5382761E93CBE — 200 — 54.3 KiB — 45 ms — h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20260115-core-mission-child-health-success/hero_rose_cd758267_1600x1000.jpg?rev=70a099e9209b4adaa4a058ea538488ba&w=400&hash=ED97F9C9F5FFD4AAFE89526874FCFD10www.gatesfoundation.org/-/media/gfo... 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h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20250822-digital-education-certificates-jobs-nigeria/image_certificate-storage_edo-cert_1600x1000.jpg?rev=558b84c5c9104dd087e6edca11394cb3&w=400&hash=515ED929506CE789CAA87178965631DBwww.gatesfoundation.org/-/media/gfo... https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20250822-digital-education-certificates-jobs-nigeria/image_certificate-storage_edo-cert_1600x1000.jpg?rev=558b84c5c9104dd087e6edca11394cb3&w=400&hash=515ED929506CE789CAA87178965631DB — 200 — 52.5 KiB — 45 ms — h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20260324-how-a-community-helped-develop-a-new-tb-vaccine/wits-rhi-m72-trial-location-johannesburg105949_2_1600x1000.jpg?rev=0af5f33892074d3595eee37ad3353937&w=400&hash=19E6D460400F0CB990E1FD3E710C685Fwww.gatesfoundation.org/-/media/gfo... 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h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20251118-cabo-verde-malaria-eradication-lessons/hero_ideas_cv-malaria_jsp_7757_1600x1000.jpg?rev=d303f10c201643d3ae0bd89d53af8a2a&w=400&hash=E442B66C7EAABEAC9561CF006330E734www.gatesfoundation.org/-/media/gfo... https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20251118-cabo-verde-malaria-eradication-lessons/hero_ideas_cv-malaria_jsp_7757_1600x1000.jpg?rev=d303f10c201643d3ae0bd89d53af8a2a&w=400&hash=E442B66C7EAABEAC9561CF006330E734 — 200 — 31.5 KiB — 48 ms — h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20251020-polio-outbreak-vaccination-response/cd757206_1600x1000.jpg?rev=4bcd5509e52f4f30be0a9f949e774278&w=400&hash=024B088B3C7A2444B85944D1073BD329www.gatesfoundation.org/-/media/gfo... 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h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20250917-pepfar-impact-on-hiv-aids/hero_ideas_pepfar_lk753200_1600x1000.jpg?rev=f22761899429410587d36ec546210042&w=400&hash=18927EC5D8A98F18172D16332B7AD2A6www.gatesfoundation.org/-/media/gfo... https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20250917-pepfar-impact-on-hiv-aids/hero_ideas_pepfar_lk753200_1600x1000.jpg?rev=f22761899429410587d36ec546210042&w=400&hash=18927EC5D8A98F18172D16332B7AD2A6 — 200 — 45.6 KiB — 66 ms — h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20260212-obgyn-experience-photo-essay-dr-hadiza-galadanci/no770835_1600x1000.jpg?rev=d1208a93773e4a1588671c5571fdc3d1&w=400&hash=C8B689E1A64386CE3559931BB735CAB7www.gatesfoundation.org/-/media/gfo... 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h2https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20250611-pph-drape-early-detection/nurse-photo_1600x10000.jpg?rev=f47a690aad764ae58dff87ff0736638a&w=400&hash=0DF87B0FCDC6F815DD0953897670850Fwww.gatesfoundation.org/-/media/gfo... https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20250611-pph-drape-early-detection/nurse-photo_1600x10000.jpg?rev=f47a690aad764ae58dff87ff0736638a&w=400&hash=0DF87B0FCDC6F815DD0953897670850F — 200 — 36.2 KiB — 61 ms — h2https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicitwww.google.com/recaptcha/api.js?onl... https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit — 200 — 1.0 KiB — 78 ms — h3https://www.gatesfoundation.org/Areas/GFO/assets/css/ajax-loader.gifwww.gatesfoundation.org/Areas/GFO/a... https://www.gatesfoundation.org/Areas/GFO/assets/css/ajax-loader.gif — 404 — 1.2 KiB — 62 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
100% of JavaScript execution is third-party
First-party Third-party 954ms · 363KB · €6/mo
www.gatesfoundation.org
Other
Costly
Execution 452ms
Transfer 46 KB
Monthly Cost €3/mo
Unattributable
Other
Optional
Execution 181ms
Transfer 0 KB
Monthly Cost €1/mo
www.gstatic.com
Other
Optional
Execution 165ms
Transfer 0 KB
Unused 45%
Monthly Cost €1/mo
www.gatesfoundation.org
Other
Optional
Execution 96ms
Transfer 287 KB
Unused 66%
Monthly Cost €1/mo
js-agent.newrelic.com
Other
Optional
Execution 60ms
Transfer 30 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • www.gatesfoundation.org adds 452ms 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

www.gatesfoundation.org takes 452ms 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

66% of www.gatesfoundation.org's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

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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