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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
4
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
60
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

775 ms

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

2.16 s

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

592 ms

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

0.001

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

2.37 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.

7.87 s

Page Load Progression

2.8 s
5.6 s
8.4 s
11.2 s
14.0 s
16.8 s
19.6 s
22.4 s
Checks
14
6 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
4.5 MB transferred, 186 requests
FIX
4.5 MB transferred, 186 requests
Critical::
Page weighs 12.8 MB (4.5 MB transferred)
Warning::
JavaScript is 3.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.2 MB
Info::
Fonts are 645 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 645 KB
Warning::
186 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.94 g CO2 per page load
4.5 MB / 2.4 MB budget
4.5 MB transferred
186 requests
0.94 g CO2 per page load
JavaScript 3.2 MiB 71%
Fonts 645.2 KiB 14%
Images 409.5 KiB 9%
HTML 114.7 KiB 3%
CSS 87.5 KiB 2%
Other 31.0 KiB 1%
Other 26.2 KiB 1%
Other 18.3 KiB 0%
Other 384 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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

F
JS Execution Cost
Action
10777ms total JS execution
FIX
10777ms total JS execution
Warning::
https://d15kdpgjg3unno.cloudfront.net/oPS.js?cid=1...: 6330ms CPU time
Warning::
https://www.theverge.com/_next/static/chunks/pages...: 990ms CPU time
Warning::
https://www.theverge.com/_next/static/chunks/frame...: 737ms CPU time
Warning::
Unattributable: 685ms CPU time
Warning::
https://www.theverge.com/: 647ms CPU time
Warning::
Third-party scripts: 8187ms (76% of total)

Main Thread Breakdown

Script Evaluation 83% Other 7% Style & Layout 4%
ScriptTotalScriptingParse/CompileParty
https://d15kdpgjg3unno.cloudfront.net/oPS.js?cid=1136330ms6297ms4ms3rd
https://www.theverge.com/_next/static/chunks/pages/_app-e6a244fd60f98f13.js990ms791ms97ms1st
https://www.theverge.com/_next/static/chunks/framework-8e0f3cf51af7b1e2.js737ms693ms4ms1st
Unattributable685ms93ms0ms3rd
https://www.theverge.com/647ms12ms0ms1st
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604070101/pubads_impl.js?cb=31097719549ms484ms12ms3rd
https://cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js311ms260ms9ms3rd
https://www.theverge.com/metrics/gtm.js?id=GTM-WQ5FM5W144ms99ms25ms1st
https://www.theverge.com/metrics/gtd?id=AW-926030959&cx=c&gtm=4e646072ms63ms8ms1st
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js71ms40ms27ms3rd

Showing top 10 of 14 scripts

F
JS Bundles
Action
59 scripts, 1.3 MB unused
FIX
59 scripts, 1.3 MB unused
Warning::
https://www.theverge.com/metrics/gtm.js?id=GTM-WQ5...: 224 KB unused (33%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.theverge.com/_next/static/chunks/pages...: 170 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.3 MB
1381 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.theverge.com/metrics/gtm.js?id=GTM-WQ5FM5W687 KB224 KB (33%)✓1st
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.theverge.com/_next/static/chunks/pages/_app-e6a244fd60f98f13.js441 KB170 KB (39%)✓1st
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604070101/pubads_impl.js?cb=31097719183 KB101 KB (55%)✓3rd
https://www.theverge.com/metrics/gtd?id=AW-926030959&cx=c&gtm=4e6460143 KB74 KB (52%)✓1st
https://assets.bounceexchange.com/assets/smart-tag/versioned/main-v2_e645891259bb60090bde423588e192e6.br.js120 KB69 KB (57%)✓3rd
https://cdn.bullwhip.cloud/sonar/vox-verge.umd.js124 KB67 KB (54%)✓3rd
https://client.aps.amazon-adsystem.com/publisher.js82 KB33 KB (41%)✓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

D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store,private
Info::
ETag present — enables conditional (304) responses
Cache-Control

no-store,private

DirectiveValueMeaning
no-store—Never cache this response
private—Only browser cache, not CDN/proxy
B
Third-Party Impact
52% third-party, 0 ms blocking
REVIEW
52% third-party, 0 ms blocking
Warning::
Third-party code accounts for 52% of page weight (2.3 MiB of 4.5 MiB)
Info::
Third-party blocking time is low (0 ms)
48%
52%
First-party Third-party
B
Image Optimization
30 images, 0 KB saveable
REVIEW
30 images, 0 KB saveable
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
30 images 409 KB
0 oversized -0 KB
12 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
17 fonts (645 KB)
PASS
17 fonts (645 KB)
Info::
17 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

17

645 KB total

Render-blocking

0

of 17

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 775 ms LCP 2.2 shttps://www.theverge.com/_next/static/media/e0d450417c4fcdb2-s.p.woff2e0d450417c4fcdb2-s.p.woff2 https://www.theverge.com/_next/static/media/e0d450417c4fcdb2-s.p.woff2 — 42.7 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/167de315d6f8820c-s.p.woff2167de315d6f8820c-s.p.woff2 https://www.theverge.com/_next/static/media/167de315d6f8820c-s.p.woff2 — 29.9 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/c32d4f9e62509b70-s.p.woff2c32d4f9e62509b70-s.p.woff2 https://www.theverge.com/_next/static/media/c32d4f9e62509b70-s.p.woff2 — 30.9 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/8314bd48671746e7-s.p.woff28314bd48671746e7-s.p.woff2 https://www.theverge.com/_next/static/media/8314bd48671746e7-s.p.woff2 — 30.5 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/1acdcb23bd60cdf8-s.p.woff21acdcb23bd60cdf8-s.p.woff2 https://www.theverge.com/_next/static/media/1acdcb23bd60cdf8-s.p.woff2 — 31.7 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/e334064d2786be51-s.p.woff2e334064d2786be51-s.p.woff2 https://www.theverge.com/_next/static/media/e334064d2786be51-s.p.woff2 — 30.9 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/dbe24bfb7e9bcd79-s.p.woff2dbe24bfb7e9bcd79-s.p.woff2 https://www.theverge.com/_next/static/media/dbe24bfb7e9bcd79-s.p.woff2 — 32.1 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/caa65695070c604f-s.p.woff2caa65695070c604f-s.p.woff2 https://www.theverge.com/_next/static/media/caa65695070c604f-s.p.woff2 — 35.2 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/7f8638c9585902a6-s.p.woff27f8638c9585902a6-s.p.woff2 https://www.theverge.com/_next/static/media/7f8638c9585902a6-s.p.woff2 — 36.8 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/afa7a955b67174eb-s.woff2afa7a955b67174eb-s.woff2 https://www.theverge.com/_next/static/media/afa7a955b67174eb-s.woff2 — 30.5 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/b61d461e2e1d8573-s.woff2b61d461e2e1d8573-s.woff2 https://www.theverge.com/_next/static/media/b61d461e2e1d8573-s.woff2 — 60.3 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/60369a8d37d9d5b8-s.woff260369a8d37d9d5b8-s.woff2 https://www.theverge.com/_next/static/media/60369a8d37d9d5b8-s.woff2 — 35.1 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/af51b8e80b7e5b97-s.woff2af51b8e80b7e5b97-s.woff2 https://www.theverge.com/_next/static/media/af51b8e80b7e5b97-s.woff2 — 61.2 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/516340c748fee9da-s.woff2516340c748fee9da-s.woff2 https://www.theverge.com/_next/static/media/516340c748fee9da-s.woff2 — 30.0 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/70754f98ca969379-s.woff270754f98ca969379-s.woff2 https://www.theverge.com/_next/static/media/70754f98ca969379-s.woff2 — 31.1 KiB — 0 ms — font-display: swaphttps://www.theverge.com/_next/static/media/4c161430243654b9-s.woff24c161430243654b9-s.woff2 https://www.theverge.com/_next/static/media/4c161430243654b9-s.woff2 — 62.5 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 0 ms — font-display: swap
e0d450417c4fcdb2-s.p.woff2 woff2 swap
Size 43 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
167de315d6f8820c-s.p.woff2 woff2 swap
Size 30 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
c32d4f9e62509b70-s.p.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
8314bd48671746e7-s.p.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
1acdcb23bd60cdf8-s.p.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
e334064d2786be51-s.p.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
dbe24bfb7e9bcd79-s.p.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
caa65695070c604f-s.p.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
7f8638c9585902a6-s.p.woff2 woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
afa7a955b67174eb-s.woff2 woff2 swap
Size 30 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
b61d461e2e1d8573-s.woff2 woff2 swap
Size 60 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
60369a8d37d9d5b8-s.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
af51b8e80b7e5b97-s.woff2 woff2 swap
Size 61 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
516340c748fee9da-s.woff2 woff2 swap
Size 30 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
70754f98ca969379-s.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
4c161430243654b9-s.woff2 woff2 swap
Size 62 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
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)
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: Axis12 Ltd

Network Waterfall
186 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
76% of JavaScript execution is third-party
First-party Third-party 8187ms · 671KB · $109/mo
d15kdpgjg3unno.cloudfront.net
Other
Costly
Execution 6330ms
Transfer 58 KB
Unused 40%
Monthly Cost $84/mo
Unattributable
Other
Costly
Execution 685ms
Transfer 0 KB
Monthly Cost $9/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 549ms
Transfer 183 KB
Unused 55%
Monthly Cost $7/mo
cdn.concert.io
Other
Costly
Execution 311ms
Transfer 104 KB
Unused 48%
Monthly Cost $4/mo
www.gstatic.com
Other
Optional
Execution 71ms
Transfer 0 KB
Unused 49%
Monthly Cost $1/mo
cdn.bullwhip.cloud
Other
Optional
Execution 66ms
Transfer 124 KB
Unused 54%
Monthly Cost $1/mo
api.bounceexchange.com
Other
Optional
Execution 61ms
Transfer 1 KB
Monthly Cost $1/mo
client.aps.amazon-adsystem.com
Other
Optional
Execution 58ms
Transfer 82 KB
Unused 41%
Monthly Cost $1/mo
assets.bounceexchange.com
Other
Optional
Execution 57ms
Transfer 120 KB
Unused 57%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • d15kdpgjg3unno.cloudfront.net adds 6330ms and costs ~$84/month
  • Unattributable adds 685ms and costs ~$9/month
  • securepubads.g.doubleclick.net adds 549ms and costs ~$7/month
  • cdn.concert.io adds 311ms and costs ~$4/month

76% 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

d15kdpgjg3unno.cloudfront.net takes 6330ms 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

Unattributable takes 685ms 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

securepubads.g.doubleclick.net takes 549ms 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

55% of securepubads.g.doubleclick.net'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

cdn.concert.io takes 311ms 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

54% of cdn.bullwhip.cloud'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

57% of assets.bounceexchange.com'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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