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.
2.52 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
11.15 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.31 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.236
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.79 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.
17.88 s
Page Load Progression
FPage Weight BudgetAction2.6 MB transferred, 63 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
DThird-Party ImpactAction96% third-party, 0 ms blockingFIX
FJS Execution CostAction4767ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://assets.newrepublic.com/assets/newmain-6d35012989b1c0719976.js | 2601ms | 2064ms | 345ms | 3rd |
| Unattributable | 568ms | 20ms | 0ms | 3rd |
| https://newrepublic.com/ | 561ms | 16ms | 30ms | 1st |
| https://www.googletagmanager.com/gtag/destination?id=G-ZJN6HEHEYX&cx=c>m=4e64h1 | 313ms | 269ms | 41ms | 3rd |
| https://blink.net/1.0/blink-sdk.js?clientId=newrepublic.com | 293ms | 256ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NMWSH2N | 261ms | 208ms | 48ms | 3rd |
| https://platform.twitter.com/widgets.js | 111ms | 93ms | 12ms | 3rd |
| https://www.google-analytics.com/analytics.js | 60ms | 47ms | 4ms | 3rd |
FJS BundlesAction9 scripts, 571 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://assets.newrepublic.com/assets/newmain-6d35012989b1c0719976.js | 711 KB | 427 KB (60%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NMWSH2N | 170 KB | 77 KB (46%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=G-ZJN6HEHEYX&cx=c>m=4e64h1 | 172 KB | 67 KB (39%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 0 KB | — | ✓ | 3rd |
| https://blink.net/1.0/blink-sdk.js?clientId=newrepublic.com | 30 KB | — | ✓ | 3rd |
| https://platform.twitter.com/widgets.js | 27 KB | — | ✓ | 3rd |
| https://blink.net/index-iframe-prod-98357a.js | 186 KB | — | ✓ | 3rd |
| https://cloudfront.loggly.com/js/loggly.tracker-latest.min.js | 2 KB | — | ✓ | 3rd |
| https://www.google-analytics.com/analytics.js | 21 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
FPage Weight InventoryAction63 resources · 2.6 MB · 571 KB savings availableFIX
~570.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 63 resources | 2.6 MiB | ||||||
BImage Optimization20 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.
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
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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, s-maxage=60, stale-while-revalidate=172800, stale-if-error=432000REVIEW
public, max-age=0, s-maxage=60, stale-while-revalidate=172800, stale-if-error=432000
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| s-maxage | 60 | CDN caches for 1 minute |
| stale-while-revalidate | 172800 | Serve stale for 2 days while fetching fresh |
| stale-if-error | 432000 |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (387 KB)PASS
Web fonts
8
387 KB total
Render-blocking
0
of 8
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 Hints7 hints, 0 missing preconnectsPASS
Current Resource Hints
7 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall63 requests over 2332msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
assets.newrepublic.com assets.newrepublic.com | Other | 2601ms | 711 KB | 60% | $35/mo | Costly |
Unattributable Unattributable | Other | 568ms | 0 KB | — | $8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 313ms | 172 KB | 39% | $4/mo | Costly |
blink.net blink.net | Other | 293ms | 30 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 261ms | 170 KB | 46% | $3/mo | Costly |
Twitter/X Embed platform.twitter.com | Social | 111ms | 27 KB | — | $1/mo | Optional |
Google Analytics www.google-analytics.com | Analytics | 60ms | 21 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- assets.newrepublic.com adds 2601ms and costs ~$35/month
- Unattributable adds 568ms and costs ~$8/month
- Google Tag Manager adds 313ms and costs ~$4/month
- blink.net adds 293ms and costs ~$4/month
- Google Tag Manager adds 261ms and costs ~$3/month
88% 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
assets.newrepublic.com takes 2601ms 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
60% of assets.newrepublic.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
Unattributable takes 568ms 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 313ms 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
blink.net takes 293ms 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 261ms 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