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https://loremipsum.io

Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
4
REVIEW
5
PASS
11
INFO
4

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

90
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
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.

471 ms

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

2.06 s

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

14 ms

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

0.018

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

997 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

3.31 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
24
11 PASS 5 REVIEW 4 FIX
F
Page Weight Budget
Action
3.0 MB transferred, 68 requests
FIX
3.0 MB transferred, 68 requests
Warning::
Page weighs 5.9 MB (3.0 MB transferred)
Warning::
JavaScript is 2.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.0 MB
Info::
Fonts are 280 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 280 KB
Info::
68 HTTP requests
Info::
Estimated 0.63 g CO2 per page load
3.0 MB / 2.4 MB budget
3.0 MB transferred
68 requests
0.63 g CO2 per page load
JavaScript 2.0 MiB 67%
Other 464.3 KiB 15%
Fonts 280.0 KiB 9%
HTML 147.6 KiB 5%
Other 47.3 KiB 2%
CSS 35.6 KiB 1%
Images 29.7 KiB 1%
Other 23.6 KiB 1%
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

F
JS Bundles
Action
29 scripts, 743 KB unused
FIX
29 scripts, 743 KB unused
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 161 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://a.pub.network/loremipsum-io/ab_test/histor...: 156 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://a.pub.network/loremipsum-io/ab_test/histor...: 155 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-KXPK...: 71 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://loremipsum.io/_next/static/chunks/255-102f...: 68 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 743 KB
743 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202609240101/pubads_impl.js?cb=122881246212 KB161 KB (76%)✓3rd
https://a.pub.network/loremipsum-io/ab_test/history/dec49155-6b61-493f-9faa-98491eeaded3/prebid.js193 KB156 KB (81%)✓3rd
https://a.pub.network/loremipsum-io/ab_test/history/dec49155-6b61-493f-9faa-98491eeaded3/pubfig.engine.js194 KB155 KB (80%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-KXPKVKP7EK164 KB71 KB (43%)✓3rd
https://loremipsum.io/_next/static/chunks/255-102f2e5b2e3dc2ef.js169 KB68 KB (40%)✓1st
https://loremipsum.io/_next/static/chunks/4bd1b696-c023c6e3521b1417.js169 KB54 KB (32%)✓1st
https://loremipsum.io/_next/static/chunks/963-21efee6d45fc58c8.js134 KB54 KB (40%)✓1st
https://loremipsum.io/_next/static/chunks/151-0a87f2721d0c45ab.js105 KB24 KB (23%)✓1st
https://a.pub.network/loremipsum-io/ab_test/history/dec49155-6b61-493f-9faa-98491eeaded3/pubfig.min.js?bypass=true32 KB—✓3rd
https://loremipsum.io/_next/static/chunks/e9014f26-2a3e0b18e14369e5.js399 KB—✓1st

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
Page Weight Inventory
Action
68 resources · 3.0 MB · 743 KB savings available
FIX
68 resources · 3.0 MB · 743 KB savings available
Warning::
Page weight 3.0 MB exceeds 1 MB target by 2.0 MB
Got: 3.0 MB Expected: ≤ 1 MB
Info::
~743 KB of savings available
Info::
34 third-party resources (38% of weight)
Info::
2 resources over 200KB
68 resources · 3.0 MiB · 34 third-party 2.0 MiB over 1MB target
JavaScript 67% · 2.0 MiB
Other 17% · 527.1 KiB
Font 9% · 280.0 KiB
Document 5% · 147.6 KiB
Image 1% · 37.1 KiB
CSS 1% · 35.6 KiB

~742.7 KiB of savings available

Remove unused JavaScript: 742.7 KiB
D
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Document Compression
Action
Document response served uncompressed
REVIEW
Document response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Third-Party Impact
38% third-party, 0 ms blocking
PASS
38% third-party, 0 ms blocking
Info::
Third-party code accounts for 38% of page weight (1.1 MiB of 3.0 MiB)
Info::
Third-party blocking time is low (0 ms)
62%
38%
First-party Third-party
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+
Image Optimization
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 30 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
403ms total JS execution
PASS
403ms total JS execution
Info::
Unattributable: 99ms CPU time
Info::
https://loremipsum.io/: 64ms CPU time
Info::
https://loremipsum.io/_next/static/chunks/4bd1b696...: 62ms CPU time
Info::
https://securepubads.g.doubleclick.net/pagead/mana...: 60ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-KXPK...: 59ms CPU time
Info::
Third-party scripts: 177ms (44% of total)

Main Thread Breakdown

Script Evaluation 63% Other 15% Script Parsing & Compilation 14% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
Unattributable99ms21ms0ms1st
https://loremipsum.io/64ms3ms3ms1st
https://loremipsum.io/_next/static/chunks/4bd1b696-c023c6e3521b1417.js62ms59ms3ms1st
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202609240101/pubads_impl.js?cb=12288124660ms43ms13ms3rd
https://www.googletagmanager.com/gtag/js?id=G-KXPKVKP7EK59ms49ms10ms3rd
https://a.pub.network/loremipsum-io/ab_test/history/dec49155-6b61-493f-9faa-98491eeaded3/pubfig.engine.js59ms45ms13ms3rd
A+
Font Loading
4 fonts (280 KB)
PASS
4 fonts (280 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

280 KB total

Render-blocking

0

of 4

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 471 ms LCP 2.1 shttps://loremipsum.io/_next/static/media/5d39360912ab897b-s.p.woff25d39360912ab897b-s.p.woff2 https://loremipsum.io/_next/static/media/5d39360912ab897b-s.p.woff2 — 67.2 KiB — 42 ms — font-display: swaphttps://loremipsum.io/_next/static/media/acc997c86979663b-s.p.woff2acc997c86979663b-s.p.woff2 https://loremipsum.io/_next/static/media/acc997c86979663b-s.p.woff2 — 70.1 KiB — 36 ms — font-display: swaphttps://loremipsum.io/_next/static/media/cb8d34571a43f897-s.p.woff2cb8d34571a43f897-s.p.woff2 https://loremipsum.io/_next/static/media/cb8d34571a43f897-s.p.woff2 — 69.8 KiB — 48 ms — font-display: swaphttps://loremipsum.io/_next/static/media/f7a9b128ae841a36-s.p.woff2f7a9b128ae841a36-s.p.woff2 https://loremipsum.io/_next/static/media/f7a9b128ae841a36-s.p.woff2 — 72.9 KiB — 55 ms — font-display: swap
5d39360912ab897b-s.p.woff2 woff2 swap
Size 67 KB
Load time 42 ms
Start 62 ms
Risk FOUT — text flashes from fallback to web font
acc997c86979663b-s.p.woff2 woff2 swap
Size 70 KB
Load time 36 ms
Start 62 ms
Risk FOUT — text flashes from fallback to web font
cb8d34571a43f897-s.p.woff2 woff2 swap
Size 70 KB
Load time 48 ms
Start 63 ms
Risk FOUT — text flashes from fallback to web font
f7a9b128ae841a36-s.p.woff2 woff2 swap
Size 73 KB
Load time 55 ms
Start 63 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+
Asset Compression
All 2 asset hosts use brotli
PASS
All 2 asset hosts use brotli
Info::
a.pub.network serves assets with brotli (assets: 4)
Got: a.pub.network (application/javascript)
Info::
cdn.privacy-mgmt.com serves assets with brotli (assets: 3)
Got: cdn.privacy-mgmt.com (text/javascript)
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
Network Waterfall
68 requests over 2476ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 471 ms LCP 2.1 shttps://loremipsum.io// https://loremipsum.io/ — 200 — 145.2 KiB — 89 ms — h2https://loremipsum.io/_next/static/media/5d39360912ab897b-s.p.woff2/_next/static/media/5d39360912ab897... https://loremipsum.io/_next/static/media/5d39360912ab897b-s.p.woff2 — 200 — 67.2 KiB — 42 ms — h2https://loremipsum.io/_next/static/media/acc997c86979663b-s.p.woff2/_next/static/media/acc997c86979663... https://loremipsum.io/_next/static/media/acc997c86979663b-s.p.woff2 — 200 — 70.1 KiB — 36 ms — h2https://loremipsum.io/_next/static/media/cb8d34571a43f897-s.p.woff2/_next/static/media/cb8d34571a43f89... https://loremipsum.io/_next/static/media/cb8d34571a43f897-s.p.woff2 — 200 — 69.8 KiB — 48 ms — h2https://loremipsum.io/_next/static/media/f7a9b128ae841a36-s.p.woff2/_next/static/media/f7a9b128ae841a3... https://loremipsum.io/_next/static/media/f7a9b128ae841a36-s.p.woff2 — 200 — 72.9 KiB — 55 ms — h2https://loremipsum.io/_next/static/css/c2e78001d34219ec.css/_next/static/css/c2e78001d34219ec.... https://loremipsum.io/_next/static/css/c2e78001d34219ec.css — 200 — 28.8 KiB — 36 ms — h2https://www.googletagmanager.com/gtag/js?id=G-KXPKVKP7EKwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-KXPKVKP7EK — 200 — 163.5 KiB — 166 ms — h2https://loremipsum.io/_next/static/chunks/webpack-88bbb02eab35f835.js/_next/static/chunks/webpack-88bbb0... https://loremipsum.io/_next/static/chunks/webpack-88bbb02eab35f835.js — 200 — 3.7 KiB — 60 ms — h2https://loremipsum.io/_next/static/chunks/4bd1b696-c023c6e3521b1417.js/_next/static/chunks/4bd1b696-c023c... https://loremipsum.io/_next/static/chunks/4bd1b696-c023c6e3521b1417.js — 200 — 169.5 KiB — 69 ms — h2https://loremipsum.io/_next/static/chunks/255-102f2e5b2e3dc2ef.js/_next/static/chunks/255-102f2e5b2e... https://loremipsum.io/_next/static/chunks/255-102f2e5b2e3dc2ef.js — 200 — 169.3 KiB — 69 ms — h2https://loremipsum.io/_next/static/chunks/main-app-0e767b34c4348844.js/_next/static/chunks/main-app-0e767... https://loremipsum.io/_next/static/chunks/main-app-0e767b34c4348844.js — 200 — 906 B — 44 ms — h2https://loremipsum.io/_next/static/chunks/e9014f26-2a3e0b18e14369e5.js/_next/static/chunks/e9014f26-2a3e0... https://loremipsum.io/_next/static/chunks/e9014f26-2a3e0b18e14369e5.js — 200 — 399.4 KiB — 73 ms — h2https://loremipsum.io/_next/static/chunks/963-21efee6d45fc58c8.js/_next/static/chunks/963-21efee6d45... https://loremipsum.io/_next/static/chunks/963-21efee6d45fc58c8.js — 200 — 133.8 KiB — 59 ms — h2https://loremipsum.io/_next/static/chunks/151-0a87f2721d0c45ab.js/_next/static/chunks/151-0a87f2721d... https://loremipsum.io/_next/static/chunks/151-0a87f2721d0c45ab.js — 200 — 104.6 KiB — 58 ms — h2https://loremipsum.io/_next/static/chunks/app/page-cd17934ce6ba7359.js/_next/static/chunks/app/page-cd179... https://loremipsum.io/_next/static/chunks/app/page-cd17934ce6ba7359.js — 200 — 1021 B — 43 ms — h2https://loremipsum.io/_next/static/chunks/759-1a5a3daeac4ca09d.js/_next/static/chunks/759-1a5a3daeac... https://loremipsum.io/_next/static/chunks/759-1a5a3daeac4ca09d.js — 200 — 6.9 KiB — 43 ms — h2https://loremipsum.io/_next/static/chunks/app/layout-7c82521a011c0410.js/_next/static/chunks/app/layout-7c8... https://loremipsum.io/_next/static/chunks/app/layout-7c82521a011c0410.js — 200 — 1.2 KiB — 57 ms — h2https://loremipsum.imgix.net/CZhWYZJ3UEpUrYOwBqZZ3/846c9c7fdc261fe79205833c6787f3fc/lorem-ipsum-magazine-layout_copy.jpg?w=192&q=60&auto=format,compressloremipsum.imgix.net/CZhWYZJ3UEpUrY... https://loremipsum.imgix.net/CZhWYZJ3UEpUrYOwBqZZ3/846c9c7fdc261fe79205833c6787f3fc/lorem-ipsum-magazine-layout_copy.jpg?w=192&q=60&auto=format,compress — 200 — 6.8 KiB — 15 ms — h2https://loremipsum.imgix.net/5vCfGucT8waG1ErycNnTOo/c3277113e4a0bbe6e522813001653cf6/lorem-ipsum-generator-cicero-engraving.png?w=192&q=60&auto=format,compressloremipsum.imgix.net/5vCfGucT8waG1E... https://loremipsum.imgix.net/5vCfGucT8waG1ErycNnTOo/c3277113e4a0bbe6e522813001653cf6/lorem-ipsum-generator-cicero-engraving.png?w=192&q=60&auto=format,compress — 200 — 10.8 KiB — 14 ms — h2https://loremipsum.imgix.net/7mySwtfCu3UO8RUPO7Vmad/b9aff766c6e30627ac3c9633be9b3cd4/lorem-ipsum-15th-century-typesetter.jpg?w=192&q=60&auto=format,compressloremipsum.imgix.net/7mySwtfCu3UO8R... https://loremipsum.imgix.net/7mySwtfCu3UO8RUPO7Vmad/b9aff766c6e30627ac3c9633be9b3cd4/lorem-ipsum-15th-century-typesetter.jpg?w=192&q=60&auto=format,compress — 200 — 12.1 KiB — 13 ms — h2https://loremipsum.io/icon.svg?efa245ac9f89ff25/icon.svg?efa245ac9f89ff25 https://loremipsum.io/icon.svg?efa245ac9f89ff25 — 200 — 6.0 KiB — 18 ms — h2https://a.pub.network/loremipsum-io/pubfig.min.jsa.pub.network/loremipsum-io/pubfig.... https://a.pub.network/loremipsum-io/pubfig.min.js — 200 — 33.5 KiB — 59 ms — h3https://loremipsum.io/_vercel/insights/script.js/_vercel/insights/script.js https://loremipsum.io/_vercel/insights/script.js — 404 — 231 B — 386 ms — h2https://loremipsum.io/font-generator/index.txt?_rsc=3lb4g/font-generator/index.txt?_rsc=3lb4... https://loremipsum.io/font-generator/index.txt?_rsc=3lb4g — 200 — 84.8 KiB — 28 ms — h2https://loremipsum.io/name-generator/index.txt?_rsc=3lb4g/name-generator/index.txt?_rsc=3lb4... https://loremipsum.io/name-generator/index.txt?_rsc=3lb4g — 200 — 17.6 KiB — 23 ms — h2https://loremipsum.io/plugins/index.txt?_rsc=3lb4g/plugins/index.txt?_rsc=3lb4g https://loremipsum.io/plugins/index.txt?_rsc=3lb4g — 200 — 19.8 KiB — 19 ms — h2https://loremipsum.io/21-of-the-best-placeholder-image-generators/index.txt?_rsc=3lb4g/21-of-the-best-placeholder-image-g... 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https://cdn.privacy-mgmt.com/wrapper/v2/messages?hasCsp=true&env=prod&body=%7B%22accountId%22%3A1638%2C%22campaignEnv%22%3A%22prod%22%2C%22campaigns%22%3A%7B%22gdpr%22%3A%7B%22consentStatus%22%3A%7B%7D%2C%22targetingParams%22%3A%7B%22fsStateOptIn%22%3Afalse%7D%7D%2C%22usnat%22%3A%7B%22consentStatus%22%3A%7B%7D%2C%22hasLocalData%22%3Afalse%2C%22targetingParams%22%3A%7B%22fsStateOptIn%22%3Afalse%7D%7D%7D%2C%22clientMMSOrigin%22%3A%22https%3A%2F%2Fcdn.privacy-mgmt.com%22%2C%22hasCSP%22%3Atrue%2C%22includeData%22%3A%7B%22localState%22%3A%7B%22type%22%3A%22string%22%7D%2C%22actions%22%3A%7B%22type%22%3A%22RecordString%22%7D%2C%22cookies%22%3A%7B%22type%22%3A%22RecordString%22%7D%7D%2C%22propertyHref%22%3A%22https%3A%2F%2Floremipsum.io%22%7D&localState=null&metadata=%7B%22gdpr%22%3A%7B%22applies%22%3Atrue%7D%2C%22usnat%22%3A%7B%22applies%22%3Afalse%7D%7D&nonKeyedLocalState=null&ch=5253431365262314010f705030042836927&scriptVersion=4.40.3&scriptType=unified — 200 — 20.9 KiB — 141 ms — h2https://cdn.privacy-mgmt.com/wrapper/v2/pv-data?hasCsp=true&env=prod&ch=5253431365262314010f705030042836927&scriptVersion=4.40.3&scriptType=unifiedcdn.privacy-mgmt.com/wrapper/v2/pv-... https://cdn.privacy-mgmt.com/wrapper/v2/pv-data?hasCsp=true&env=prod&ch=5253431365262314010f705030042836927&scriptVersion=4.40.3&scriptType=unified — 200 — 0 B — 31 ms — h2https://cdn.privacy-mgmt.com/index.html?hasCsp=true&message_id=1470893&consentUUID=null&consent_origin=https%3A%2F%2Fcdn.privacy-mgmt.com%2Fconsent%2Ftcfv2&preload_message=true&version=v1cdn.privacy-mgmt.com/index.html?has... https://cdn.privacy-mgmt.com/index.html?hasCsp=true&message_id=1470893&consentUUID=null&consent_origin=https%3A%2F%2Fcdn.privacy-mgmt.com%2Fconsent%2Ftcfv2&preload_message=true&version=v1 — 200 — 2.4 KiB — 53 ms — h2https://cdn.privacy-mgmt.com/wrapper/v2/pv-data?hasCsp=true&env=prod&ch=5253431365262314010f705030042836927&scriptVersion=4.40.3&scriptType=unifiedcdn.privacy-mgmt.com/wrapper/v2/pv-... https://cdn.privacy-mgmt.com/wrapper/v2/pv-data?hasCsp=true&env=prod&ch=5253431365262314010f705030042836927&scriptVersion=4.40.3&scriptType=unified — 200 — 815 B — 37 ms — h2https://cdn.privacy-mgmt.com/Notice.1c267.csscdn.privacy-mgmt.com/Notice.1c267.c... https://cdn.privacy-mgmt.com/Notice.1c267.css — 200 — 6.9 KiB — 20 ms — h2https://cdn.privacy-mgmt.com/polyfills.01516.jscdn.privacy-mgmt.com/polyfills.0151... https://cdn.privacy-mgmt.com/polyfills.01516.js — 200 — 2.4 KiB — 20 ms — h2https://cdn.privacy-mgmt.com/Notice.97af9.jscdn.privacy-mgmt.com/Notice.97af9.j... https://cdn.privacy-mgmt.com/Notice.97af9.js — 200 — 92.9 KiB — 45 ms — h2https://cdn.privacy-mgmt.com/consent/tcfv2/vendor-list/categories?siteId=35584cdn.privacy-mgmt.com/consent/tcfv2/... https://cdn.privacy-mgmt.com/consent/tcfv2/vendor-list/categories?siteId=35584 — 200 — 1.3 KiB — 22 ms — h2https://pagead2.googlesyndication.com/pagead/ping?e=1pagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/ping?e=1 — 204 — 20 B — 95 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
44% of JavaScript execution is third-party
First-party Third-party 177ms · 570KB · $2/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 60ms
Transfer 212 KB
Unused 76%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 59ms
Transfer 164 KB
Unused 43%
Monthly Cost $1/mo
a.pub.network
Other
Optional
Execution 59ms
Transfer 194 KB
Unused 80%
Monthly Cost $1/mo

44% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

76% 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

80% of a.pub.network'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

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-08-30 — 2026-09-26)

LCP (p75)

954 ms

94% good

INP (p75)

84 ms

87% good

CLS (p75)

0.040

85% good

FCP (p75)

769 ms

TTFB (p75)

373 ms

This origin passes Core Web Vitals assessment
Image Optimization
9 images, 11 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

9

Total Size

11 KB

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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