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.
8.16 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
12.95 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
402 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.
8.16 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.
13.08 s
Page Load Progression
DPage Weight BudgetAction2.1 MB transferred, 61 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
DJS Execution CostAction2400ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 308ms | 14ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WV6M96GVFR | 255ms | 206ms | 36ms | 3rd |
| https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js | 249ms | 183ms | 11ms | 3rd |
| https://nationalinterest.org/ | 223ms | 40ms | 5ms | 1st |
| https://nationalinterest.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 223ms | 213ms | 2ms | 1st |
| https://a.pub.network/nationalinterest-org/pubfig.min.js | 212ms | 71ms | 5ms | 3rd |
| https://a.pub.network/nationalinterest-org/prebid.js | 212ms | 149ms | 54ms | 3rd |
| https://a.pub.network/nationalinterest-org/pubfig.engine.mobile.js | 203ms | 137ms | 65ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 159ms | 107ms | 45ms | 3rd |
| https://s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js | 117ms | 54ms | 11ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction17 scripts, 597 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://a.pub.network/nationalinterest-org/prebid.js | 193 KB | 158 KB (82%) | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 188 KB | 145 KB (77%) | ✓ | 3rd |
| https://a.pub.network/nationalinterest-org/pubfig.engine.mobile.js | 154 KB | 122 KB (79%) | ✓ | 3rd |
| https://s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js | 140 KB | 90 KB (64%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WV6M96GVFR | 152 KB | 59 KB (39%) | ✓ | 3rd |
| https://cdn.privacy-mgmt.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js | 42 KB | 23 KB (54%) | ✓ | 3rd |
| https://nationalinterest.org/wp-content/mu-plugins/national-interest/vendor/wdgdc/gtm-analytics/assets/dist/js/PageData.js?ver=v2.2.4 | 1 KB | — | ✓ | 1st |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js | 34 KB | — | ✓ | 3rd |
| https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 | 11 KB | — | ✓ | 3rd |
| https://a.pub.network/nationalinterest-org/pubfig.min.js | 26 KB | — | ✓ | 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 InventoryAction61 resources · 2.1 MB · 597 KB savings availableFIX
~596.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 61 resources | 2.1 MiB | ||||||
BThird-Party Impact55% third-party, 0 ms blockingREVIEW
BImage Optimization10 images, 0 KB saveableREVIEW
BHTTP Cachingpublic, max-age=0, s-maxage=2592000REVIEW
public, max-age=0, s-maxage=2592000
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| s-maxage | 2592000 | CDN caches for 4 weeks |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (412 KB)PASS
Web fonts
5
412 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~73 KB and ~146 ms
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: Cloudflare
Network Waterfall61 requests over 1644msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 308ms | 0 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 255ms | 152 KB | 39% | $3/mo | Costly |
cdn.privacy-mgmt.com cdn.privacy-mgmt.com | Other | 249ms | 42 KB | — | $3/mo | Costly |
a.pub.network a.pub.network | Other | 212ms | 26 KB | — | $3/mo | Costly |
a.pub.network a.pub.network | Other | 212ms | 193 KB | 82% | $3/mo | Costly |
a.pub.network a.pub.network | Other | 203ms | 154 KB | 79% | $3/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 159ms | 188 KB | 77% | $2/mo | Optional |
s3.amazonaws.com s3.amazonaws.com | Other | 117ms | 140 KB | 64% | $2/mo | Optional |
cdn.privacy-mgmt.com cdn.privacy-mgmt.com | Other | 102ms | 42 KB | 54% | $1/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 83ms | 34 KB | — | $1/mo | Optional |
cdn.privacy-mgmt.com cdn.privacy-mgmt.com | Other | 53ms | 24 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 308ms and costs ~$4/month
- Google Tag Manager adds 255ms and costs ~$3/month
- cdn.privacy-mgmt.com adds 249ms and costs ~$3/month
- a.pub.network adds 212ms and costs ~$3/month
- a.pub.network adds 212ms and costs ~$3/month
- a.pub.network adds 203ms and costs ~$3/month
81% 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
Unattributable takes 308ms 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 255ms 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
cdn.privacy-mgmt.com takes 249ms 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
a.pub.network takes 212ms 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
a.pub.network takes 212ms 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
82% of a.pub.network'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
a.pub.network takes 203ms 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
79% of a.pub.network'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
77% of securepubads.g.doubleclick.net'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
64% of s3.amazonaws.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
54% of cdn.privacy-mgmt.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