Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

Best Practices

SEO

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

662 ms

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

1.67 s

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

161 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.024

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

1.51 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.

2.98 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

5 PASS 4 REVIEW 4 FIX

Page Weight Budget

Action

2.4 MB transferred, 69 requests

FIX

2.4 MB transferred, 69 requests

Page weighs 6.8 MB (2.4 MB transferred)

JavaScript is 1.3 MB — consider code splitting or lazy loading

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Got: 1.3 MB

Fonts are 516 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 516 KB

69 HTTP requests

Estimated 0.49 g CO2 per page load

2.4 MB transferred

69 requests

0.49 g CO2 per page load

JavaScript 1.3 MiB 55%

Fonts 515.9 KiB 21%

Images 224.2 KiB 9%

HTML 155.9 KiB 6%

Other 100.8 KiB 4%

CSS 72.0 KiB 3%

Other 17.5 KiB 1%

Other 1.1 KiB 0%

Other 549 B 0%

0 2.4 MB 4.9 MB

Approaching limit

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

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

Third-Party Impact

Action

95% third-party, 0 ms blocking

FIX

95% third-party, 0 ms blocking

Third-party code accounts for 95% of page weight (2.2 MiB of 2.4 MiB)

Third-party blocking time is low (0 ms)

95%

First-party Third-party

JS Bundles

Action

9 scripts, 570 KB unused

FIX

9 scripts, 570 KB unused

https://assets.newrepublic.com/assets/newmain-6d35...: 426 KB unused (60%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtm.js?id=GTM-NMW...: 77 KB unused (46%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/destination?...: 67 KB unused (39%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 570 KB

570 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://assets.newrepublic.com/assets/newmain-6d35012989b1c0719976.js	711 KB	426 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&gtm=4e64k0h2	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.

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

Page Weight Inventory

Action

69 resources · 2.4 MB · 570 KB savings available

FIX

69 resources · 2.4 MB · 570 KB savings available

Page weight 1.4 MB over 1MB target

Got: 2.4 MB Expected: ≤ 1 MB

~570 KB of savings available

57 third-party resources (95% of weight)

1 resources over 200KB

69 resources · 2.4 MiB · 57 third-party 1.4 MiB over 1MB target

JavaScript 55% · 1.3 MiB

Font 21% · 515.9 KiB

Image 10% · 241.0 KiB

Document 6% · 156.0 KiB

Other 4% · 103.0 KiB

CSS 3% · 72.0 KiB

~570.2 KiB of savings available

Remove unused JavaScript: 570.2 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

69 resources			2.4 MiB

Image Optimization

23 images, 0 KB saveable

REVIEW

23 images, 0 KB saveable

https://images.newrepublic.com/b3df792bacd03f8f8cc... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://images.newrepublic.com/86b21d0893948f3004f... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://images.newrepublic.com/37987272dd65e34259d... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://images.newrepublic.com/832b01174ee42211271... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://images.newrepublic.com/98c3ffbd5e04491be90... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

23 images 224 KB

0 oversized -0 KB

2 legacy format

5 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

JS Execution Cost

Action

1013ms total JS execution

REVIEW

1013ms total JS execution

https://assets.newrepublic.com/assets/newmain-6d35...: 548ms CPU time

Unattributable: 130ms CPU time

https://newrepublic.com/: 130ms CPU time

https://www.googletagmanager.com/gtm.js?id=GTM-NMW...: 72ms CPU time

https://www.googletagmanager.com/gtag/destination?...: 68ms CPU time

Third-party scripts: 884ms (87% of total)

Main Thread Breakdown

Script Evaluation 61% Other 14% Script Parsing & Compilation 9% Style & Layout 8%

Script	Total	Scripting	Parse/Compile	Party
https://assets.newrepublic.com/assets/newmain-6d35012989b1c0719976.js	548ms	433ms	60ms	3rd
Unattributable	130ms	3ms	0ms	3rd
https://newrepublic.com/	130ms	2ms	6ms	1st
https://www.googletagmanager.com/gtm.js?id=GTM-NMWSH2N	72ms	58ms	13ms	3rd
https://www.googletagmanager.com/gtag/destination?id=G-ZJN6HEHEYX&cx=c&gtm=4e64k0h2	68ms	57ms	10ms	3rd
https://blink.net/1.0/blink-sdk.js?clientId=newrepublic.com	66ms	59ms	2ms	3rd

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

public, max-age=0, s-maxage=60, stale-while-revalidate=172800, stale-if-error=432000

REVIEW

public, max-age=0, s-maxage=60, stale-while-revalidate=172800, stale-if-error=432000

Cache-Control header is set

Got: public, max-age=0, s-maxage=60, stale-while-revalidate=172800, stale-if-error=432000

CDN TTL: 1 minute (s-maxage=60)

ETag present — enables conditional (304) responses

Cache-Control

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 Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

11 fonts (516 KB)

PASS

11 fonts (516 KB)

11 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

516 KB total

Render-blocking

of 11

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

5391d8bf924e3fa57012.woff2 woff2 swap

Size 56 KB

Load time 101 ms

Start 288 ms