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.
3.15 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.32 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
654 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.139
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.09 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.
15.60 s
Page Load Progression
DPage Weight BudgetAction2.3 MB transferred, 101 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DJS Execution CostAction3497ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://f389d50a-32e0-478b-9d4b-2d4592528bea.edge.permutive.app/f389d50a-32e0-478b-9d4b-2d4592528bea-web.js | 722ms | 542ms | 78ms | 3rd |
| Unattributable | 641ms | 15ms | 0ms | 3rd |
| https://wikitravel.org/en/Main_Page | 332ms | 42ms | 6ms | 1st |
| https://wikitravel.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 312ms | 304ms | 3ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-QZS14P6J6N | 305ms | 243ms | 59ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 290ms | 203ms | 62ms | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js | 214ms | 156ms | 11ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otGPP.js | 159ms | 140ms | 18ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5JFXBDP | 132ms | 91ms | 40ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 99ms | 86ms | 3ms | 3rd |
Showing top 10 of 14 scripts
DJS BundlesAction17 scripts, 395 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-QZS14P6J6N&cx=c>m=4e64h1 | 156 KB | 110 KB (71%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5JFXBDP | 112 KB | 70 KB (63%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 124 KB | 67 KB (54%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-QZS14P6J6N | 156 KB | 67 KB (43%) | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js | 66 KB | 58 KB (87%) | ✓ | 3rd |
| https://f389d50a-32e0-478b-9d4b-2d4592528bea.edge.permutive.app/f389d50a-32e0-478b-9d4b-2d4592528bea-web.js | 168 KB | 23 KB (14%) | ✓ | 3rd |
| https://wikitravel.org/customHP/js/jquery.main.js | 10 KB | — | ✓ | 1st |
| https://wikitravel.org/customHP/js/hp.js | 2 KB | — | ✓ | 1st |
| https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location/dnsfeed | 0 KB | — | ✓ | 3rd |
| https://cl.qualaroo.com/ki.js/38969/7O6.js | 56 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
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
DPage Weight InventoryAction101 resources · 2.3 MB · 395 KB savings availableFIX
~395.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 101 resources | 2.3 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| max-age | 0 | Cache for 0 seconds |
| no-store | — | Never cache this response |
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
| post-check | 0 | |
| pre-check | 0 |
BThird-Party Impact45% third-party, 0 ms blockingREVIEW
CImage OptimizationAction57 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
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
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall101 requests over 1894msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
f389d50a-32e0-478b-9d4b-2d4592528bea.edge.permutive.app f389d50a-32e0-478b-9d4b-2d4592528bea.edge.permutive.app | Other | 722ms | 168 KB | 14% | $10/mo | Costly |
Unattributable Unattributable | Other | 641ms | 0 KB | — | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 305ms | 156 KB | 43% | $4/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 290ms | 124 KB | 54% | $4/mo | Essential |
ajax.googleapis.com ajax.googleapis.com | Other | 214ms | 33 KB | — | $3/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 159ms | 22 KB | — | $2/mo | Essential |
Google Tag Manager www.googletagmanager.com | Tag Manager | 132ms | 112 KB | 63% | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 99ms | 9 KB | — | $1/mo | Essential |
Google Tag Manager www.googletagmanager.com | Tag Manager | 90ms | 156 KB | 71% | $1/mo | Optional |
ajax.googleapis.com ajax.googleapis.com | Other | 72ms | 66 KB | 87% | $1/mo | Optional |
cl.qualaroo.com cl.qualaroo.com | Other | 66ms | 56 KB | — | $1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 62ms | 6 KB | — | $1/mo | Essential |
These scripts may cost more than they're worth
- f389d50a-32e0-478b-9d4b-2d4592528bea.edge.permutive.app adds 722ms and costs ~$10/month
- Unattributable adds 641ms and costs ~$9/month
- Google Tag Manager adds 305ms and costs ~$4/month
- ajax.googleapis.com adds 214ms and costs ~$3/month
82% 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
f389d50a-32e0-478b-9d4b-2d4592528bea.edge.permutive.app takes 722ms 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
Unattributable takes 641ms 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 305ms 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
54% of OneTrust'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
ajax.googleapis.com takes 214ms 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
63% of Google Tag Manager'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
71% of Google Tag Manager'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
87% of ajax.googleapis.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