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.
8.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
22.90 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
4.51 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
1.369
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
13.82 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.
42.93 s
Page Load Progression
FPage Weight BudgetAction6.3 MB transferred, 252 requestsFIX
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
Subset fonts to include only used characters, or switch to system font stacks.
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.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction17247ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.volaris.com/vendor.912c37ef2c041255.js | 5750ms | 4661ms | 11ms | 3rd |
| Unattributable | 2454ms | 266ms | 0ms | 3rd |
| https://www.volaris.com/ | 2068ms | 20ms | 1ms | 3rd |
| https://www.volaris.com/scripts.72e665a9ff72b911.js | 1185ms | 1129ms | 14ms | 3rd |
| https://mapa.volaris.com/_next/static/chunks/afee056f49fd75b2.js | 834ms | 780ms | 15ms | 3rd |
| https://tags.tiqcdn.com/utag/volaris/main/prod/utag.js | 606ms | 533ms | 24ms | 3rd |
| https://cdn.optimizely.com/js/973095788.js | 546ms | 440ms | 82ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-91N05BETCF&cx=c>m=4e64e1 | 420ms | 343ms | 67ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202409.1.0/otBannerSdk.js | 331ms | 199ms | 54ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SDRVQFJ88F&cx=c&_slc=1 | 319ms | 259ms | 55ms | 3rd |
Showing top 10 of 28 scripts
FJS BundlesAction90 scripts, 1.3 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.volaris.com/main.85741021d5accdc4.js | 737 KB | 430 KB (58%) | ✓ | 3rd |
| https://www.volaris.com/vendor.912c37ef2c041255.js | 534 KB | 298 KB (56%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-91N05BETCF | 168 KB | 113 KB (67%) | ✓ | 3rd |
| https://cdn.optimizely.com/js/973095788.js | 172 KB | 82 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-91N05BETCF&cx=c>m=4e64e1 | 168 KB | 68 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-S4SJ | 156 KB | 65 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SDRVQFJ88F&cx=c&_slc=1 | 152 KB | 62 KB (41%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202409.1.0/otBannerSdk.js | 112 KB | 60 KB (54%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-14241618&cx=c>m=4e64e1 | 131 KB | 59 KB (45%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 96 KB | 31 KB (32%) | ✓ | 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
FPage Weight InventoryAction252 resources · 6.3 MB · 1.3 MB savings availableFIX
~1.3 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 252 resources | 6.3 MiB | ||||||
CImage OptimizationAction41 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading11 fonts (1357 KB)PASS
Web fonts
11
1357 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~836 KB and ~1672 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints7 hints, 0 missing preconnectsPASS
Current Resource Hints
7 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AHTTP Cachingmax-age=86400 (1 day)PASS
max-age=86400
| Directive | Value | Meaning |
|---|---|---|
| max-age | 86400 | Cache for 1 day |
Network Waterfall252 requests over 7680msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.volaris.com www.volaris.com | Other | 5750ms | 534 KB | 56% | MX$426/mo | Costly |
Unattributable Unattributable | Other | 2454ms | 0 KB | — | MX$182/mo | Costly |
www.volaris.com www.volaris.com | Other | 2068ms | 6 KB | — | MX$153/mo | Costly |
www.volaris.com www.volaris.com | Other | 1185ms | 35 KB | 65% | MX$88/mo | Costly |
mapa.volaris.com mapa.volaris.com | Other | 834ms | 0 KB | — | MX$62/mo | Costly |
tags.tiqcdn.com tags.tiqcdn.com | Other | 606ms | 41 KB | — | MX$45/mo | Costly |
Optimizely cdn.optimizely.com | A/B Testing | 546ms | 172 KB | 48% | MX$40/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 420ms | 168 KB | 40% | MX$31/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 331ms | 112 KB | 54% | MX$25/mo | Essential |
Google Tag Manager www.googletagmanager.com | Tag Manager | 319ms | 152 KB | 41% | MX$24/mo | Costly |
mapa.volaris.com mapa.volaris.com | Other | 292ms | 0 KB | — | MX$22/mo | Costly |
mapa.volaris.com mapa.volaris.com | Other | 282ms | 0 KB | — | MX$21/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 269ms | 156 KB | 42% | MX$20/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 248ms | 131 KB | 45% | MX$18/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 227ms | 96 KB | 32% | MX$17/mo | Costly |
aswpsdkus.com aswpsdkus.com | Other | 205ms | 41 KB | 58% | MX$15/mo | Costly |
www.volaris.com www.volaris.com | Other | 177ms | 737 KB | 58% | MX$13/mo | Optional |
tags.tiqcdn.com tags.tiqcdn.com | Other | 169ms | 6 KB | — | MX$12/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 153ms | 44 KB | — | MX$11/mo | Optional |
cdn.uplift-platform.com cdn.uplift-platform.com | Other | 141ms | 0 KB | — | MX$10/mo | Optional |
mapa.volaris.com mapa.volaris.com | Other | 106ms | 0 KB | — | MX$8/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 94ms | 168 KB | 67% | MX$7/mo | Optional |
Google Analytics www.google-analytics.com | Analytics | 81ms | 21 KB | — | MX$6/mo | Optional |
homeapps.volaris.com homeapps.volaris.com | Other | 68ms | 73 KB | — | MX$5/mo | Optional |
homeapps.volaris.com homeapps.volaris.com | Other | 64ms | 73 KB | — | MX$5/mo | Optional |
tools.luckyorange.com tools.luckyorange.com | Other | 53ms | 14 KB | — | MX$4/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 53ms | 9 KB | — | MX$4/mo | Essential |
Google Ads Conversion www.googleadservices.com | Advertising | 52ms | 23 KB | — | MX$4/mo | Optional |
These scripts may cost more than they're worth
- www.volaris.com adds 5750ms and costs ~MX$426/month
- Unattributable adds 2454ms and costs ~MX$182/month
- www.volaris.com adds 2068ms and costs ~MX$153/month
- www.volaris.com adds 1185ms and costs ~MX$88/month
- mapa.volaris.com adds 834ms and costs ~MX$62/month
- tags.tiqcdn.com adds 606ms and costs ~MX$45/month
- Optimizely adds 546ms and costs ~MX$40/month
- Google Tag Manager adds 420ms and costs ~MX$31/month
- Google Tag Manager adds 319ms and costs ~MX$24/month
- mapa.volaris.com adds 292ms and costs ~MX$22/month
- mapa.volaris.com adds 282ms and costs ~MX$21/month
- Google Tag Manager adds 269ms and costs ~MX$20/month
- Google Tag Manager adds 248ms and costs ~MX$18/month
- Facebook Pixel adds 227ms and costs ~MX$17/month
- aswpsdkus.com adds 205ms and costs ~MX$15/month
100% 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
www.volaris.com takes 5750ms 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
56% of www.volaris.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
Unattributable takes 2454ms 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
www.volaris.com takes 2068ms 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
www.volaris.com takes 1185ms 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
65% of www.volaris.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
mapa.volaris.com takes 834ms 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
tags.tiqcdn.com takes 606ms 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
Optimizely takes 546ms 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 420ms 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
Google Tag Manager takes 319ms 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
mapa.volaris.com takes 292ms 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
mapa.volaris.com takes 282ms 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 269ms 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 248ms 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
Facebook Pixel takes 227ms 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
aswpsdkus.com takes 205ms 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
58% of aswpsdkus.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
58% of www.volaris.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
67% 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