Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
6.62 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
21.30 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.71 s
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.
9.25 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.
21.46 s
Page Load Progression
DPage Weight BudgetAction2.5 MB transferred, 112 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
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.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5905ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.redditstatic.com/ads/pixel.js | 1057ms | 1016ms | 6ms | 3rd |
| Unattributable | 657ms | 114ms | 0ms | 3rd |
| https://js.intercomcdn.com/frame-modern.7a9f78bc.js | 609ms | 466ms | 57ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5FNQRFPLK7&cx=c>m=4e64k0 | 445ms | 374ms | 56ms | 3rd |
| https://www.charitynavigator.org/cn-donate/dist/donate.js | 394ms | 256ms | 138ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N4FSH3 | 380ms | 321ms | 46ms | 3rd |
| https://s2.getsitecontrol.com/widgets/es6/runtime.6163969.js | 302ms | 231ms | 20ms | 3rd |
| https://www.charitynavigator.org/etc.clientlibs/cn/clientlibs/clientlib-react.lc-f4243330318846ff590fedf25b03b0df-lc.min.js | 238ms | 154ms | 26ms | 3rd |
| https://www.charitynavigator.org/etc.clientlibs/cn/clientlibs/clientlib-site.lc-15300fb58e75afce6cd733ef2c352f5a-lc.min.js | 234ms | 61ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-823547363&cx=c>m=4e64k0 | 202ms | 163ms | 38ms | 3rd |
Showing top 10 of 22 scripts
FJS BundlesAction35 scripts, 611 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://js.intercomcdn.com/frame-modern.7a9f78bc.js | 193 KB | 124 KB (64%) | ✓ | 3rd |
| https://js.intercomcdn.com/vendor-modern.80eace52.js | 144 KB | 86 KB (60%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-823547363&cx=c>m=4e64k0 | 137 KB | 67 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5FNQRFPLK7&cx=c>m=4e64k0 | 175 KB | 63 KB (36%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N4FSH3 | 161 KB | 62 KB (39%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 37 KB (65%) | ✓ | 3rd |
| https://s2.getsitecontrol.com/widgets/es6/runtime.6163969.js | 68 KB | 32 KB (48%) | ✓ | 3rd |
| https://platform-api.sharethis.com/js/sharethis.js | 47 KB | 31 KB (67%) | ✗ | 3rd |
| https://assets.adobedtm.com/b3dd98d0d04d/8a7beaadbb31/launch-1c236a64eafe.min.js | 53 KB | 30 KB (57%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 29 KB (30%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction112 resources · 2.5 MB · 611 KB savings availableFIX
~611.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 112 resources | 2.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction45 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
Performance issues directly impact user engagement and conversion rates.
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (141 KB)PASS
Web fonts
3
141 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Axis12 Ltd
Network Waterfall112 requests over 2428msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.redditstatic.com www.redditstatic.com | Other | 1057ms | 19 KB | — | $20/mo | Costly |
Unattributable Unattributable | Other | 657ms | 0 KB | — | $12/mo | Costly |
js.intercomcdn.com js.intercomcdn.com | Other | 609ms | 193 KB | 64% | $11/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 445ms | 175 KB | 36% | $8/mo | Costly |
www.charitynavigator.org www.charitynavigator.org | Other | 394ms | 322 KB | — | $7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 380ms | 161 KB | 39% | $7/mo | Costly |
s2.getsitecontrol.com s2.getsitecontrol.com | Other | 302ms | 68 KB | 48% | $6/mo | Costly |
www.charitynavigator.org www.charitynavigator.org | Other | 238ms | 80 KB | 36% | $4/mo | Costly |
www.charitynavigator.org www.charitynavigator.org | Other | 234ms | 7 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 202ms | 137 KB | 49% | $4/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 179ms | 47 KB | — | $3/mo | Optional |
Heap Analytics cdn.heapanalytics.com | Analytics | 179ms | 41 KB | — | $3/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 148ms | 97 KB | 30% | $3/mo | Optional |
platform-api.sharethis.com platform-api.sharethis.com | Other | 141ms | 47 KB | 67% | $3/mo | Optional |
www.charitynavigator.org www.charitynavigator.org | Other | 138ms | 16 KB | — | $3/mo | Optional |
Hotjar script.hotjar.com | Session Replay | 129ms | 57 KB | 65% | $2/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 109ms | 53 KB | 57% | $2/mo | Optional |
www.charitynavigator.org www.charitynavigator.org | Other | 106ms | 35 KB | 62% | $2/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 68ms | 2 KB | — | $1/mo | Optional |
js.intercomcdn.com js.intercomcdn.com | Other | 67ms | 144 KB | 60% | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 65ms | 19 KB | — | $1/mo | Optional |
Intercom Widget widget.intercom.io | Chat | 57ms | 4 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.redditstatic.com adds 1057ms and costs ~$20/month
- Unattributable adds 657ms and costs ~$12/month
- js.intercomcdn.com adds 609ms and costs ~$11/month
- Google Tag Manager adds 445ms and costs ~$8/month
- www.charitynavigator.org adds 394ms and costs ~$7/month
- Google Tag Manager adds 380ms and costs ~$7/month
- s2.getsitecontrol.com adds 302ms and costs ~$6/month
- www.charitynavigator.org adds 238ms and costs ~$4/month
- www.charitynavigator.org adds 234ms and costs ~$4/month
- Google Tag Manager adds 202ms and costs ~$4/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.redditstatic.com takes 1057ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 657ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
js.intercomcdn.com takes 609ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
64% of js.intercomcdn.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 445ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.charitynavigator.org takes 394ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 380ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
s2.getsitecontrol.com takes 302ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.charitynavigator.org takes 238ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.charitynavigator.org takes 234ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 202ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
67% of platform-api.sharethis.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
65% of Hotjar's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
57% of assets.adobedtm.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
62% of www.charitynavigator.org's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
60% of js.intercomcdn.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev