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https://skyscanner.net

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
85
GRADE
B
FIX
2
REVIEW
7
PASS
10
INFO
3

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

Mobile Desktop
97
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
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.

455 ms

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

884 ms

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

124 ms

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

0.006

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

1.01 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.

884 ms

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
22
10 PASS 7 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (683.1 KiB of 683.4 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
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.

No Cache-Control header

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

C
JS Execution Cost
Action
1082ms total JS execution
REVIEW
1082ms total JS execution
Warning::
https://client.px-cloud.net/PXrf8vapwA/main.min.js: 656ms CPU time
Warning::
https://www.skyscanner.net/rf8vapwA/captcha.js?a=c...: 344ms CPU time
Info::
Unattributable: 82ms CPU time
Warning::
Third-party scripts: 1082ms (100% of total)

Main Thread Breakdown

Script Evaluation 65% Style & Layout 22% Other 9%
ScriptTotalScriptingParse/CompileParty
https://client.px-cloud.net/PXrf8vapwA/main.min.js656ms399ms4ms3rd
https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v=344ms307ms9ms3rd
Unattributable82ms3ms0ms3rd
C
JS Bundles
Action
9 scripts, 181 KB unused
REVIEW
9 scripts, 181 KB unused
Warning::
https://www.skyscanner.net/rf8vapwA/captcha.js?a=c...: 44 KB unused (17%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.skyscanner.net/rf8vapwA/captcha.js?a=c...: 44 KB unused (17%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.skyscanner.net/sttc/px/captcha-v2/stat...: 35 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://client.px-cloud.net/PXrf8vapwA/main.min.js: 29 KB unused (30%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://client.px-cloud.net/PXrf8vapwA/main.min.js: 29 KB unused (30%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 181 KB
181 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v=264 KB44 KB (17%)✓3rd
https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v=0 KB44 KB (17%)✓3rd
https://www.skyscanner.net/sttc/px/captcha-v2/static/js/main.80db1e99.js84 KB35 KB (42%)✓3rd
https://client.px-cloud.net/PXrf8vapwA/main.min.js95 KB29 KB (30%)✓3rd
https://client.px-cloud.net/PXrf8vapwA/main.min.js0 KB29 KB (30%)✓3rd
blob:https://www.skyscanner.net/ed5a7bfb-3dc7-4e7d-942b-f0d3a7c5e7170 KB—✓3rd
blob:https://www.skyscanner.net/1fb65f5f-8719-4426-beb5-3604bfbb7883-0 KB—✓3rd
blob:https://www.skyscanner.net/c3f743cb-2702-4418-9249-b3f23e293245-0 KB—✓3rd
https://crcldu.com/bd/auditor.js?v=1778416320000152 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

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

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
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main 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+
Page Weight Budget
683 KB transferred, 25 requests
PASS
683 KB transferred, 25 requests
Info::
Page weighs 1.6 MB (683 KB transferred)
Warning::
JavaScript is 595 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 595 KB
Info::
25 HTTP requests
Info::
Estimated 0.14 g CO2 per page load
683 KB / 2.4 MB budget
683 KB transferred
25 requests
0.14 g CO2 per page load
JavaScript 595.0 KiB 87%
Other 35.0 KiB 5%
Other 22.6 KiB 3%
Images 14.3 KiB 2%
CSS 7.1 KiB 1%
Other 5.3 KiB 1%
HTML 3.4 KiB 1%
Other 807 B 0%
0 2.4 MB 4.9 MB
Under 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

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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 14 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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+
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::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A
Page Weight Inventory
25 resources · 683 KB · 181 KB savings available
PASS
25 resources · 683 KB · 181 KB savings available
Info::
Within 1MB page-weight target
Got: 683 KB
Info::
~181 KB of savings available
Warning::
24 third-party resources (100% of weight)
Info::
1 resources over 200KB
25 resources · 683.4 KiB · 24 third-party Within 1MB page-weight target
JavaScript 87% · 595.0 KiB
Image 7% · 48.0 KiB
Other 4% · 27.3 KiB
CSS 1% · 7.1 KiB
Document 1% · 6.0 KiB

~180.7 KiB of savings available

Remove unused JavaScript: 180.7 KiB
Network Waterfall
25 requests over 2485ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 455 ms LCP 884 mshttps://skyscanner.net// https://skyscanner.net/ — 301 — 314 B — 100 ms — http/1.1https://www.skyscanner.net/www.skyscanner.net/ https://www.skyscanner.net/ — 307 — 2.0 KiB — 130 ms — h2https://www.skyscanner.net/sttc/px/captcha-v2/index.html?url=Lz8=&uuid=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&vid=www.skyscanner.net/sttc/px/captcha-... https://www.skyscanner.net/sttc/px/captcha-v2/index.html?url=Lz8=&uuid=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&vid= — 200 — 1.3 KiB — 21 ms — h2https://www.skyscanner.net/sttc/px/captcha-v2/static/js/main.80db1e99.jswww.skyscanner.net/sttc/px/captcha-... https://www.skyscanner.net/sttc/px/captcha-v2/static/js/main.80db1e99.js — 200 — 83.5 KiB — 41 ms — h3https://www.skyscanner.net/sttc/px/captcha-v2/static/css/main.7b7617db.csswww.skyscanner.net/sttc/px/captcha-... https://www.skyscanner.net/sttc/px/captcha-v2/static/css/main.7b7617db.css — 200 — 4.2 KiB — 26 ms — h3https://www.skyscanner.net/sttc/px/captcha-v2/manifest.jsonwww.skyscanner.net/sttc/px/captcha-... https://www.skyscanner.net/sttc/px/captcha-v2/manifest.json — 200 — 807 B — 40 ms — h3https://www.skyscanner.net/sttc/px/captcha-v2/strings.jsonwww.skyscanner.net/sttc/px/captcha-... https://www.skyscanner.net/sttc/px/captcha-v2/strings.json — 200 — 22.6 KiB — 24 ms — h3https://js.skyscnr.com/sttc/px/captcha-v2/captcha-01.svgjs.skyscnr.com/sttc/px/captcha-v2/c... https://js.skyscnr.com/sttc/px/captcha-v2/captcha-01.svg — 200 — 14.3 KiB — 61 ms — h2https://www.skyscanner.net/favicon.icowww.skyscanner.net/favicon.ico https://www.skyscanner.net/favicon.ico — 200 — 32.7 KiB — 22 ms — h3https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v=www.skyscanner.net/rf8vapwA/captcha... https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v= — 200 — 263.6 KiB — 57 ms — h3https://client.px-cloud.net/PXrf8vapwA/main.min.jsclient.px-cloud.net/PXrf8vapwA/main... https://client.px-cloud.net/PXrf8vapwA/main.min.js — 200 — 95.4 KiB — 9 ms — h2https://tzm.px-cloud.net/ns?c=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51tzm.px-cloud.net/ns?c=5a07cfd3-4c6c... https://tzm.px-cloud.net/ns?c=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51 — 200 — 302 B — 422 ms — http/1.1https://www.skyscanner.net/rf8vapwA/xhr/assets/js/bundlewww.skyscanner.net/rf8vapwA/xhr/ass... https://www.skyscanner.net/rf8vapwA/xhr/assets/js/bundle — 200 — 2.2 KiB — 207 ms — h3blob:https://www.skyscanner.net/ed5a7bfb-3dc7-4e7d-942b-f0d3a7c5e717www.skyscanner.net/ed5a7bfb-3dc7-4e... blob:https://www.skyscanner.net/ed5a7bfb-3dc7-4e7d-942b-f0d3a7c5e717 — -1 — 0 B — 0 ms — blob:https://www.skyscanner.net/1fb65f5f-8719-4426-beb5-3604bfbb7883www.skyscanner.net/1fb65f5f-8719-44... blob:https://www.skyscanner.net/1fb65f5f-8719-4426-beb5-3604bfbb7883 — 200 — -1 B — 1.6 s — blobblob:https://www.skyscanner.net/c3f743cb-2702-4418-9249-b3f23e293245www.skyscanner.net/c3f743cb-2702-44... blob:https://www.skyscanner.net/c3f743cb-2702-4418-9249-b3f23e293245 — 200 — -1 B — 1.6 s — blobhttps://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swapfonts.googleapis.com/css2?family=Ro... https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap — 200 — 2.9 KiB — 153 ms — h2https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v=www.skyscanner.net/rf8vapwA/captcha... https://www.skyscanner.net/rf8vapwA/captcha.js?a=captcha&m=0&u=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&v= — 200 — 0 B — 1 ms — h3https://client.px-cloud.net/PXrf8vapwA/main.min.jsclient.px-cloud.net/PXrf8vapwA/main... https://client.px-cloud.net/PXrf8vapwA/main.min.js — 200 — 0 B — 1 ms — h2https://crcldu.com/bd/sync.html?v=1778416200000crcldu.com/bd/sync.html?v=177841620... https://crcldu.com/bd/sync.html?v=1778416200000 — 200 — 1.0 KiB — 88 ms — h2https://js.px-cloud.net/?t=d-idzd6aoov-1778416368387&v=5a07d1fd-4c6c-11f1-a757-c6479780e825js.px-cloud.net/?t=d-idzd6aoov-1778... https://js.px-cloud.net/?t=d-idzd6aoov-1778416368387&v=5a07d1fd-4c6c-11f1-a757-c6479780e825 — 200 — 1.1 KiB — 61 ms — h2https://collector-pxrf8vapwa.px-client.net/b/g?payload=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^EVUQwZLHXpqfmRZUUoAiYGdddEh0awtmaHZxS31RYFcdAWJHZhlfYVxVdQsCakhKRmYDdwIHeX1zZWVLVQdnfXpfVQtbU3pkQ0QdUGVGU0pgCnZwQAdkRlYAVgR9EN[IfXlKGWUGA3tjQgJdCmAHVHZdaErDJ2WFsHAWB6RFcHXmh3BAJGUEoLSkhRd1sEfHlAUAFZXQYEA0hZCl14ZVBAVF1`wVnVwcXBgGAUZ8fndCU83lHBwodWnhE/W0poZF5EAmUZdVN4X2pkUWJoQlMBCNgpXVntzQEB5BHlid1hiZGVLc35bcVhxenZGU38LQVtFcERbQ1V0SgVcfktnfXADREhHdXF6X3BDBllVSH1Zd3hCA2heZWAZCgNBaHZ1CekBTAkFURHpYAgNoBlRRRHMLdmpLRAZxAXQLC0tdcUdecH1eXmddUUQDWwFAQ0R5VVFFZXBrZ2tdZ1VzRH9/REcHCg8QHhBzWl0DZXdsWRX91XQ8QCEkQYmoDAAUBChAIBgIFHhBiagMABQELEAgCHhBiagMABQYCEAgCHhBiagMABQYDEAgfA08eEHhkWWFlAH9LdF9FDxAIEFpGRkJBCB0dRDUVFHEFZS0[FRU1xcV0AcXFdGHUFGRlEdQkodUVNCRlFaUx9EAB1bXFZXShxaRl9eDUdAXg9+SAoPFEdHW1YPB1MCBVFUVgEfBlEEUR8DA1QDH1MFB7wUfBgpTAlY7GUwoKVwcDFERbVg8QT09v&appId=PXrf8vapwA&tag=TTE6NAtcJEJJOw==&uuid=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&ft=397&seq=1&en=NTA&bi=KDxfdH0DGlVuYD1RMWhhVykdTzM5MRJRJChOORJ5EXovGxpPbHcaSEZvLw8pGlYtKw4XSgA8HhdBOFw8O1AJCjcpXQ1kaG5ZOEsbLG0kQ1AkKxhUFS8edioVSUxyZlQ=&cs=815716677ff56294d1c9bb1406545d1e7461dff1acb444f1ff430bf47bac0e67&pc=9888716397517217&sid=5a66ec8a-4c6c-11f1-9542-a4e99b9e27f9%F3%A0%84%B1%F3%A0%84%B7%F3%A0%84%B7%F3%A0%84%B8%F3%A0%84%B4%F3%A0%84%B1%F3%A0%84%B6%F3%A0%84%B3%F3%A0%84%B6%F3%A0%84%B8%F3%A0%84%B2%F3%A0%84%B2%F3%A0%84%B5&vid=5a07d1fd-4c6c-11f1-a757-c6479780e825&ci=5a69ad10-4c6c-11f1-9466-3dbf1ce61010&pxhd=gAk8xoG9zOqeifOcYvrF3hxlroPUstACZ5HlFcnHy8jxTu5wQtUOhCxGxinURS-UwtqRMQy8846gsCQ0/FChQg==:RufzrOvg7lmSLZyMEQ4l5uLOCAqXvEzj3AwcbEcvhBehx5BspPEaZLFKbtIKotcfmAfgtdUKGtHI1eqhm9DSj9mQR1aG8qi5U7vxweoLpis=&cts=5a66ee57-4c6c-11f1-9542-a4e99b9e27f9&hid=TQalQeimsYBmCb4oHA784toWMGIdN8d4J1Xiux3m9HI=:VWWuaxGzkPsb93H6CPOUdR85jPWVRhmBFQprwM4EWlywDQzrnayrmGGzi3WLRh/vrJA-jU0Lw6QzCqjoaiD5mPryKVbk74gvBdafug60N0s4f1i1pTkvVfJcNs-N8mLfgN-42eA542/asw2VI2mVLuGKynvBM2F9YNmAIsPHhM4rIbgcWhckbCxsMVSqR5Xxcollector-pxrf8vapwa.px-client.net/... https://collector-pxrf8vapwa.px-client.net/b/g?payload=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^EVUQwZLHXpqfmRZUUoAiYGdddEh0awtmaHZxS31RYFcdAWJHZhlfYVxVdQsCakhKRmYDdwIHeX1zZWVLVQdnfXpfVQtbU3pkQ0QdUGVGU0pgCnZwQAdkRlYAVgR9EN[IfXlKGWUGA3tjQgJdCmAHVHZdaErDJ2WFsHAWB6RFcHXmh3BAJGUEoLSkhRd1sEfHlAUAFZXQYEA0hZCl14ZVBAVF1`wVnVwcXBgGAUZ8fndCU83lHBwodWnhE/W0poZF5EAmUZdVN4X2pkUWJoQlMBCNgpXVntzQEB5BHlid1hiZGVLc35bcVhxenZGU38LQVtFcERbQ1V0SgVcfktnfXADREhHdXF6X3BDBllVSH1Zd3hCA2heZWAZCgNBaHZ1CekBTAkFURHpYAgNoBlRRRHMLdmpLRAZxAXQLC0tdcUdecH1eXmddUUQDWwFAQ0R5VVFFZXBrZ2tdZ1VzRH9/REcHCg8QHhBzWl0DZXdsWRX91XQ8QCEkQYmoDAAUBChAIBgIFHhBiagMABQELEAgCHhBiagMABQYCEAgCHhBiagMABQYDEAgfA08eEHhkWWFlAH9LdF9FDxAIEFpGRkJBCB0dRDUVFHEFZS0[FRU1xcV0AcXFdGHUFGRlEdQkodUVNCRlFaUx9EAB1bXFZXShxaRl9eDUdAXg9+SAoPFEdHW1YPB1MCBVFUVgEfBlEEUR8DA1QDH1MFB7wUfBgpTAlY7GUwoKVwcDFERbVg8QT09v&appId=PXrf8vapwA&tag=TTE6NAtcJEJJOw==&uuid=5a07cfd3-4c6c-11f1-a757-48a0d4a88e51&ft=397&seq=1&en=NTA&bi=KDxfdH0DGlVuYD1RMWhhVykdTzM5MRJRJChOORJ5EXovGxpPbHcaSEZvLw8pGlYtKw4XSgA8HhdBOFw8O1AJCjcpXQ1kaG5ZOEsbLG0kQ1AkKxhUFS8edioVSUxyZlQ=&cs=815716677ff56294d1c9bb1406545d1e7461dff1acb444f1ff430bf47bac0e67&pc=9888716397517217&sid=5a66ec8a-4c6c-11f1-9542-a4e99b9e27f9%F3%A0%84%B1%F3%A0%84%B7%F3%A0%84%B7%F3%A0%84%B8%F3%A0%84%B4%F3%A0%84%B1%F3%A0%84%B6%F3%A0%84%B3%F3%A0%84%B6%F3%A0%84%B8%F3%A0%84%B2%F3%A0%84%B2%F3%A0%84%B5&vid=5a07d1fd-4c6c-11f1-a757-c6479780e825&ci=5a69ad10-4c6c-11f1-9466-3dbf1ce61010&pxhd=gAk8xoG9zOqeifOcYvrF3hxlroPUstACZ5HlFcnHy8jxTu5wQtUOhCxGxinURS-UwtqRMQy8846gsCQ0/FChQg==:RufzrOvg7lmSLZyMEQ4l5uLOCAqXvEzj3AwcbEcvhBehx5BspPEaZLFKbtIKotcfmAfgtdUKGtHI1eqhm9DSj9mQR1aG8qi5U7vxweoLpis=&cts=5a66ee57-4c6c-11f1-9542-a4e99b9e27f9&hid=TQalQeimsYBmCb4oHA784toWMGIdN8d4J1Xiux3m9HI=:VWWuaxGzkPsb93H6CPOUdR85jPWVRhmBFQprwM4EWlywDQzrnayrmGGzi3WLRh/vrJA-jU0Lw6QzCqjoaiD5mPryKVbk74gvBdafug60N0s4f1i1pTkvVfJcNs-N8mLfgN-42eA542/asw2VI2mVLuGKynvBM2F9YNmAIsPHhM4rIbgcWhckbCxsMVSqR5Xx — 200 — 1.0 KiB — 184 ms — h2https://crcldu.com/bd/auditor.js?v=1778416320000crcldu.com/bd/auditor.js?v=17784163... https://crcldu.com/bd/auditor.js?v=1778416320000 — 200 — 152.4 KiB — 67 ms — h2https://fst-ec.perimeterx.net/?id=5a07d1fd-4c6c-11f1-a757-c6479780e825fst-ec.perimeterx.net/?id=5a07d1fd-... https://fst-ec.perimeterx.net/?id=5a07d1fd-4c6c-11f1-a757-c6479780e825 — -1 — 0 B — 0 ms — https://www.skyscanner.net/rf8vapwA/xhr/assets/js/bundlewww.skyscanner.net/rf8vapwA/xhr/ass... https://www.skyscanner.net/rf8vapwA/xhr/assets/js/bundle — 200 — 1.7 KiB — 209 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 1082ms · 0KB · $14/mo
client.px-cloud.net
Other
Costly
Execution 656ms
Transfer 0 KB
Unused 30%
Monthly Cost $9/mo
www.skyscanner.net
Other
Costly
Execution 344ms
Transfer 0 KB
Unused 17%
Monthly Cost $5/mo
Unattributable
Other
Optional
Execution 82ms
Transfer 0 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • client.px-cloud.net adds 656ms and costs ~$9/month
  • www.skyscanner.net adds 344ms and costs ~$5/month

100% 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

client.px-cloud.net takes 656ms 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

www.skyscanner.net takes 344ms 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

How third-party costs are calculated

Image Optimization
1 images, 14 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

14 KB

1 missing alt text 1 missing dimensions
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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