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Results for https://aircanada.com

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Spain Spain · Madrid Completed: Apr 15, 2026 23:04 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
D69

Site Health

Score: 69 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Solid SEO basics — a few optimizations could boost rankings.

Good server performance with room for optimization.

Mostly compliant — a few items need attention.

Good content signals with minor gaps.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Akamai Bot Manager sites average 71
At average
Better than 23% of Akamai Bot Manager sites See full Akamai Bot Manager benchmark →
Angular sites average 71
At average
Better than 18% of Angular sites See full Angular benchmark →

Top Priorities (5)

1

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
2

Cookie 'aco_siteLocale' is missing the Secure flag

Security gaps expose your site and users to attacks, eroding trust.

Security › Cookie Security
3

Cookie 'geoLocation' is missing the Secure flag

Security gaps expose your site and users to attacks, eroding trust.

Security › Cookie Security
4

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
5

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

5

High impact, low effort — start here.

Strategic

0

High impact, requires investment.

Nothing in this quadrant — good news.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
BeaverCheck badge
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<a href="https://beavercheck.com/results/93b9b8cd-ea9b-4a46-b214-3807affc0ac7"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Faircanada.com" alt="BeaverCheck Score"></a>
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What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. The 5 security gaps leave your users exposed — modern browsers increasingly warn visitors about insecure sites. Addressing the critical issues below would have the most immediate impact on your user trust.

5 security gaps detected — browsers may warn visitors about your site.
C
Could reach Estimate based on resolving critical issues

Return on Investment

CAD 238 investment → CAD 525/month returns + CAD 350,000 risk avoided

Payback period: < 1 month First-year ROI: +2555%

Investment

CAD 238

2h · 5 findings

Monthly returns

CAD 525 /mo

~CAD 6,306 / year

  • Conversions recovered CAD 525
  • Bandwidth savings CAD 0.96

Regulatory risk avoided

CAD 350,000

if kept compliant

  • ACA CAD 250,000
  • PIPEDA CAD 100,000

Payback period

0 12mo 24mo

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

CA$238

2.5 developer hours at CA$95/hr

Based on Canada rates (CA$95/hr)

Quick wins
CA$238 5 fixes in ~150 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
CA$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

CAD 29,168 / month at risk

~CAD 350,012 / year if left unfixed

Compliance Risk

CAD 350,000

ACAPIPEDA
  • No privacy policy link detected
    PIPEDA: CAD 1,000 – CAD 100,000
  • Trackers detected but no cookie policy found
    PIPEDA: CAD 1,000 – CAD 100,000
  • Trackers detected but no privacy policy found
    PIPEDA: CAD 1,000 – CAD 100,000

+5 more

Bandwidth Waste

CAD 0.96 /mo

8921.0 MB/mo × 0.108 CAD/GB

  • Optimize transfer: save ~892 KB per page load
    Saves CAD 0.96/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Unique monthly visitors from your analytics

Purchases, signups, or key actions

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue
Current bounce (est.)
After fixes (est.)
Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Thanks for your feedback!

We'll use a cached audit if available, or offer to scan.

Checking for existing audit...

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

28
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
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.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

8.37 s

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

14.43 s

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

2.35 s

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

0.000

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

9.30 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.

17.79 s

Detailed Report

Audit breakdown by category with detailed findings.

28

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.aircanada.com/home/vendor.436b440afc06d651.js18408.0 s328.5 KiB
www.aircanada.com/home/main.d033cf8802380eb9.js21566.0 s200.6 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B21600.0 s177.6 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...21600.0 s153.5 KiB
assets.adobedtm.com/14307738146c/2d72065f81e7/launch-9e3b3ffc9904.min.js3600.0 s96.4 KiB
www.aircanada.com/assets/b23d8f289e32edec2065f3c335af8c367001194a011600.0 s62.4 KiB
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js86400.0 s110.4 KiB
www.aircanada.com/home/867.5c6ecab26fe17306.js16090.0 s58.7 KiB
p11.techlab-cdn.com/e/65226_747628217.js600.0 s32.7 KiB
www.aircanada.com/home/298.70b89edf9b45d9c6.js320.0 s24.5 KiB
p11.techlab-cdn.com/e/65319_1825172608.js600.0 s18.3 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584644.0 s177.3 KiB
www.aircanada.com/home/978.ae7e6789f96a9634.js315.0 s12.9 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584651.0 s108.2 KiB
www.aircanada.com/home/styles.8dc6e083c14ad84a.css16958.0 s11.9 KiB
www.aircanada.com/home/polyfills.da2356291a9cd820.js25707.0 s11.7 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584645.0 s69.0 KiB
p11.techlab-cdn.com/e/65257_1825202461.js600.0 s7.0 KiB
/logos/082a8d33-cfc3-4da9-b069-db3379cdd69f/018dd13f-b436...86400.0 s15.6 KiB
www.aircanada.com/home/544.0911ceee1c669e46.js317.0 s6.5 KiB
www.aircanada.com/home/57.a29490220bf04e01.js70235.0 s13.1 KiB
s.go-mpulse.net/boomerang/95K7G-R6KA6-85CWB-9YW8G-QLP3N604800.0 s56.5 KiB
www.aircanada.com/home/124.83811dadc72a01ce.js284.0 s5.3 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...2584663.0 s53.0 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/g...2584651.0 s51.6 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584645.0 s49.8 KiB
www.aircanada.com/home/926.ce90fc4e3a1c539b.js65814.0 s9.6 KiB
www.aircanada.com/home/331.6d01cd94d534631d.js295.0 s4.1 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
www.aircanada.com/home/274.d6426a9b204844b1.js44504.0 s7.0 KiB
www.aircanada.com/home/575.5100448214a90582.js65373.0 s7.7 KiB
www.aircanada.com/home/770.93ff7e19627a0a47.js7832.0 s4.7 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...2584660.0 s36.5 KiB
www.aircanada.com/home/19.a44d73de03d5fc6b.js20880.0 s5.1 KiB
www.aircanada.com/home/860.1fcfdc4651f7805a.js38894.0 s5.4 KiB
www.aircanada.com/home/940.6c18e3c0aed3e563.js14976.0 s2.9 KiB
www.aircanada.com/home/common.a3f77af452d198f5.js66442.0 s4.1 KiB
p11.techlab-cdn.com/e/64885_1825202492.js600.0 s2.0 KiB
www.aircanada.com/home/runtime.453919a8577c3fd2.js43726.0 s2.7 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
www.aircanada.com/home/695.25262becbe9f7ae5.js22253.0 s1.5 KiB
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC2e8efcc5990847a...3600.0 s1.0 KiB
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC3aa392ec6b714af...3600.0 s967 B
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584742.0 s7.3 KiB
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC6cb52b49b6fa427...3600.0 s746 B
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC6bb2ba695e064cf...3600.0 s681 B
www.aircanada.com/home/scripts.bdab446f78523dc8.js66770.0 s1.0 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584644.0 s3.5 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584665.0 s2.0 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584645.0 s862 B

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:2.435 source:map[type:text value:[unattributed]]] map[reflowTime:2.164 source:map[column:942027 line:0 type:source-location url:https://www.aircanada.com/home/main.d033cf8802380eb9.js urlProvider:network]] map[reflowTime:5.86 source:map[column:15207 line:0 type:source-location url:https://www.aircanada.com/home/544.0911ceee1c669e46.js urlProvider:network]] map[reflowTime:20.604 source:map[column:3666 line:0 type:source-location url:https://www.aircanada.com/home/544.0911ceee1c669e46.js urlProvider:network]] map[reflowTime:4.1 source:map[column:23504 line:0 type:source-location url:https://www.aircanada.com/home/57.a29490220bf04e01.js urlProvider:network]] map[reflowTime:11.606 source:map[column:1.28466e+06 line:0 type:source-location url:https://www.aircanada.com/home/main.d033cf8802380eb9.js urlProvider:network]]]

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:415.69 label:Time to first byte subpart:timeToFirstByte] map[duration:1908.412 label:Resource load delay subpart:resourceLoadDelay] map[duration:27.934 label:Resource load duration subpart:resourceLoadDuration] map[duration:177.526 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-DIV
nodeLabel: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
path: 1,HTML,1,BODY,0,AC-HOME-ROOT,0,DIV,7,DIV,0,MAIN,0,DIV,3,AC-FLIGHTS,0,DIV,0,DIV,0,DIV,0,AC-DYNAMIC-BK,0,DIV
selector: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
snippet: <div class="gradient main-wrapper bg-animation-desktop" style="background-image: url(&quot;https://kilo-content.aircanada.com/ac/applications/…&quot;);">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-DIV
nodeLabel: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
path: 1,HTML,1,BODY,0,AC-HOME-ROOT,0,DIV,7,DIV,0,MAIN,0,DIV,3,AC-FLIGHTS,0,DIV,0,DIV,0,DIV,0,AC-DYNAMIC-BK,0,DIV
selector: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
snippet: <div class="gradient main-wrapper bg-animation-desktop" style="background-image: url(&quot;https://kilo-content.aircanada.com/ac/applications/…&quot;);">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B177.6 KiB900 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Noticias sobre viajes y novedades section.news-and-updates__wrapper > div.news-and-updates__requirements > picture.news-and-updates__requirements__background > img
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...107.7 KiB82.1 KiB
div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...68.3 KiB48.8 KiB
div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...49.1 KiB29.6 KiB
div.pos-banner-component > div.pos-card-container > picture.ng-star-inserted > img.pos-card-container__image div.pos-banner-component > div.pos-card-container > picture.ng-star-inserted > img.pos-card-container__image
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...35.8 KiB20.1 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 4.9 s
URLTime Spent
aircanada.com/769 ms
aircanada.com/home/es/es/aco/flights824 ms
www.aircanada.com/home/es/es/aco/flights3.3 s
www.aircanada.com/home/es/es/aco/flights0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 2.0 s 734.1 KiB
URLTransfer SizeEst Savings
/pagead/managed/js/gpt/m202604100101/pubads_impl.js196.5 KiB151.9 KiB
www.aircanada.com/home/vendor.436b440afc06d651.js327.7 KiB111.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-MHSCXD277.8 KiB87.2 KiB
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js110.3 KiB59.5 KiB
www.googletagmanager.com/gtag/js?id=DC-9772812&cx=c&gtm=4e64e1120.7 KiB56.2 KiB
www.aircanada.com/home/main.d033cf8802380eb9.js199.7 KiB50.4 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B176.0 KiB38.0 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B176.0 KiB38.0 KiB
s.go-mpulse.net/boomerang/95K7G-R6KA6-85CWB-9YW8G-QLP3N56.3 KiB36.6 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...152.8 KiB28.7 KiB
assets.adobedtm.com/14307738146c/2d72065f81e7/launch-9e3b3ffc9904.min.js96.1 KiB28.2 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...152.8 KiB27.9 KiB
www.aircanada.com/home/867.5c6ecab26fe17306.js57.8 KiB20.3 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.aircanada.com/assets/b23d8f289e32edec2065f3c335af8c367001194a0113.7 s3.0 s30 ms
Unattributable1.9 s914 ms0.0 ms
www.aircanada.com/home/es/es/aco/flights1.8 s889 ms4.1 ms
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B1.2 s1.0 s93 ms
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...1.2 s1.1 s46 ms
www.aircanada.com/home/runtime.453919a8577c3fd2.js523 ms513 ms0.2 ms
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...428 ms356 ms36 ms
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js260 ms164 ms52 ms
assets.adobedtm.com/14307738146c/2d72065f81e7/launch-9e3b3ffc9904.min.js188 ms144 ms38 ms
p11.techlab-cdn.com/e/65319_1825172608.js56 ms51 ms4.4 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation8.3 s
Other1.4 s
Style & Layout760 ms
Script Parsing & Compilation343 ms
Rendering258 ms
Parse HTML & CSS241 ms
Garbage Collection214 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
The page has an unload handler in a sub frame.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 41.6 KiB
URLTransfer SizeEst Savings
21.0 KiB18.7 KiB
@keyframes fadeIn{0%{opacity:0} …12.5 KiB12.3 KiB
@keyframes _ngcontent-ng-c2003155099_fadeIn{0%{opacity:0} …11.0 KiB10.6 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.aircanada.com/home/vendor.436b440afc06d651.js328.5 KiB
www.aircanada.com/home/main.d033cf8802380eb9.js200.6 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B177.6 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B177.5 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...177.3 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...153.6 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...153.5 KiB
/ac/applications/achomebeta/content/1.0.2140/es-ES.json111.5 KiB
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js110.4 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...108.2 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
A Star Alliance member Se abre en una ventana nueva div.ngx-ac-wrapper > div.ngx-ac-libra-footer-star-alliance > a.ng-star-inserted > img.ng-star-inserted
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 40 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 1 animated element found
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 210 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 410 ms
●Avoid large layout shifts 9 layout shifts found
○INP breakdown
90

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Disfrute del control aduanero previo de EE. UU. en Canadá Siéntase como un loc… div.peak-scroller-container > div.carousel-container > div.cards-carrousel__cards-container > div.cards-carrousel__card
¡Que no se lo cuenten! Este verano, esté donde el mondo cobra vida, en ciudade… div.peak-scroller-container > div.carousel-container > div.cards-carrousel__cards-container > div.cards-carrousel__card
Redefina su forma de relajarse Vuele con total comodidad en la clase Signature… div.peak-scroller-container > div.carousel-container > div.cards-carrousel__cards-container > div.cards-carrousel__card

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Reservar con puntos Aeroplan abc-checkbox.search-type-toggle-checkbox > div.abc-form-element-container > div.abc-form-element-wrapper > input#bkmg-mobile-tablet_searchTypeToggle

These are opportunities to improve keyboard navigation in your application.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Condiciones de uso div.ngx-ac-libra-footer-address-wrapper > div.ngx-ac-libra-footer-additional-links > div.ngx-ac-libra-footer-additional-link > a
Política de privacidad div.ngx-ac-libra-footer-address-wrapper > div.ngx-ac-libra-footer-additional-links > div.ngx-ac-libra-footer-additional-link > a
Condiciones generales de transporte y tarifas div.ngx-ac-libra-footer-address-wrapper > div.ngx-ac-libra-footer-additional-links > div.ngx-ac-libra-footer-additional-link > a
Política sobre cookies y tecnologías de seguimiento div.ngx-ac-libra-footer-address-wrapper > div.ngx-ac-libra-footer-additional-links > div.ngx-ac-libra-footer-additional-link > a
Sello div.ngx-ac-libra-footer-address-wrapper > div.ngx-ac-libra-footer-additional-links > div.ngx-ac-libra-footer-additional-link > a

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Unirse ahora ngx-ac-aco-user-menu.ng-tns-c2490803833-0 > div.libra-controls > abc-button.libra-join > button#libraUserMenu-joinNow
Descargue nuestra aplicación móvil Acceda a su tarjeta de Aeroplan digital en l… div.ngx-ac-wrapper > div.ngx-ac-libra-footer-column > div.ngx-ac-libra-footer-award-container > div.ngx-ac-libra-footer-app-install
nuestra política sobre cookies y tecnologías de seguimiento. div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link
○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`[accesskey]` values are unique
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
www.aircanada.com/assets/b23d8f289e32edec2065f3c335af8c367001194a011 line 141, col 127

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
/ac/applications/achomebeta/content/1.0.2140/assets/json/...
Failed to load resource: the server responded with a status of 403 ()

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
www.aircanada.com/home/vendor.436b440afc06d651.js
www.aircanada.com/home/main.d033cf8802380eb9.js
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
83

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
/es/es/aco/home/fly/onboard/cabin-features/signature-serv...Más información

Format your HTML in a way that enables crawlers to better understand your app’s content.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Ir a reservar un vuelo div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Ir a contenido div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Ir a navegación principal div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Ir a los enlaces de pie de página div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link

To appear in search results, crawlers need access to your app.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

56
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
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.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.61 s

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

3.34 s

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

332 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.

2.84 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.

3.40 s

Detailed Report

Audit breakdown by category with detailed findings.

56

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.aircanada.com/home/vendor.436b440afc06d651.js18385.0 s328.5 KiB
www.aircanada.com/home/main.d033cf8802380eb9.js21543.0 s200.6 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B21600.0 s184.8 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...21600.0 s153.5 KiB
assets.adobedtm.com/14307738146c/2d72065f81e7/launch-9e3b3ffc9904.min.js3600.0 s96.4 KiB
www.aircanada.com/assets/b23d8f289e32edec2065f3c335af8c367001194a011600.0 s62.4 KiB
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js86400.0 s110.4 KiB
www.aircanada.com/home/867.5c6ecab26fe17306.js16090.0 s58.7 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...2584622.0 s363.4 KiB
p11.techlab-cdn.com/e/65226_747628217.js600.0 s32.7 KiB
www.aircanada.com/home/298.70b89edf9b45d9c6.js297.0 s24.4 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584622.0 s191.7 KiB
p11.techlab-cdn.com/e/65319_1825172608.js600.0 s18.3 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584621.0 s177.3 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...2584622.0 s158.8 KiB
www.aircanada.com/home/978.ae7e6789f96a9634.js292.0 s12.9 KiB
www.aircanada.com/home/styles.8dc6e083c14ad84a.css16935.0 s11.9 KiB
www.aircanada.com/home/polyfills.da2356291a9cd820.js25684.0 s11.7 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584622.0 s69.0 KiB
p11.techlab-cdn.com/e/65257_1825202461.js600.0 s7.0 KiB
/logos/082a8d33-cfc3-4da9-b069-db3379cdd69f/018dd13f-b436...86400.0 s15.6 KiB
www.aircanada.com/home/544.0911ceee1c669e46.js294.0 s6.5 KiB
www.aircanada.com/home/57.a29490220bf04e01.js70212.0 s13.1 KiB
s.go-mpulse.net/boomerang/95K7G-R6KA6-85CWB-9YW8G-QLP3N604800.0 s56.5 KiB
www.aircanada.com/home/124.83811dadc72a01ce.js261.0 s5.3 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/g...2584619.0 s50.0 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584622.0 s49.8 KiB
www.aircanada.com/home/926.ce90fc4e3a1c539b.js65791.0 s9.6 KiB
www.aircanada.com/home/331.6d01cd94d534631d.js272.0 s4.1 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
www.aircanada.com/home/274.d6426a9b204844b1.js44481.0 s7.0 KiB
www.aircanada.com/home/575.5100448214a90582.js65373.0 s7.7 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/c...2584619.0 s36.5 KiB
www.aircanada.com/home/19.a44d73de03d5fc6b.js20857.0 s5.1 KiB
www.aircanada.com/home/860.1fcfdc4651f7805a.js38871.0 s5.4 KiB
www.aircanada.com/home/770.93ff7e19627a0a47.js29723.0 s4.7 KiB
www.aircanada.com/home/418.5cd604df45f0c4ec.js84775.0 s5.4 KiB
www.aircanada.com/home/940.6c18e3c0aed3e563.js14953.0 s2.9 KiB
www.aircanada.com/home/common.a3f77af452d198f5.js66419.0 s4.1 KiB
p11.techlab-cdn.com/e/64885_1825202492.js600.0 s2.0 KiB
www.aircanada.com/home/runtime.453919a8577c3fd2.js43703.0 s2.7 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
www.aircanada.com/home/695.25262becbe9f7ae5.js22230.0 s1.5 KiB
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC2e8efcc5990847a...3600.0 s1.0 KiB
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC3aa392ec6b714af...3600.0 s967 B
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...2584719.0 s7.3 KiB
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC6cb52b49b6fa427...3600.0 s746 B
/14307738146c/2d72065f81e7/a20a2f2f98c6/RC6bb2ba695e064cf...3600.0 s681 B
www.aircanada.com/home/scripts.bdab446f78523dc8.js66747.0 s1.0 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584621.0 s3.5 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...2584622.0 s862 B

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1.561 source:map[column:942027 line:0 type:source-location url:https://www.aircanada.com/home/main.d033cf8802380eb9.js urlProvider:network]] map[reflowTime:10.726 source:map[column:12577 line:0 type:source-location url:https://www.aircanada.com/home/867.5c6ecab26fe17306.js urlProvider:network]] map[reflowTime:7.452 source:map[column:10243 line:0 type:source-location url:https://www.aircanada.com/home/575.5100448214a90582.js urlProvider:network]] map[reflowTime:10.568 source:map[column:3666 line:0 type:source-location url:https://www.aircanada.com/home/544.0911ceee1c669e46.js urlProvider:network]] map[reflowTime:10.571 source:map[column:23504 line:0 type:source-location url:https://www.aircanada.com/home/57.a29490220bf04e01.js urlProvider:network]] map[reflowTime:22.327 source:map[column:1.159187e+06 line:0 type:source-location url:https://www.aircanada.com/home/main.d033cf8802380eb9.js urlProvider:network]] map[reflowTime:8.497 source:map[type:text value:[unattributed]]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Noticias sobre viajes y novedades section.news-and-updates__wrapper > div.news-and-updates__requirements > picture.news-and-updates__requirements__background > img
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...191.7 KiB169.8 KiB
div.pos-banner-component > div.pos-container > picture.pos-container__picture > img.pos-container__image div.pos-banner-component > div.pos-container > picture.pos-container__picture > img.pos-container__image
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...159.4 KiB81.8 KiB
div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...68.3 KiB56.6 KiB
div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img div.cards-carrousel__card > ac-card > div.ac-card > img.ac-card-img
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...49.1 KiB37.4 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:366.511 label:Time to first byte subpart:timeToFirstByte] map[duration:1840.261 label:Resource load delay subpart:resourceLoadDelay] map[duration:31.628 label:Resource load duration subpart:resourceLoadDuration] map[duration:388.233 label:Element render delay subpart:elementRenderDelay]]
lhId: page-4-DIV
nodeLabel: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
path: 1,HTML,1,BODY,0,AC-HOME-ROOT,0,DIV,7,DIV,0,MAIN,0,DIV,3,AC-FLIGHTS,0,DIV,0,DIV,0,DIV,0,AC-DYNAMIC-BK,0,DIV
selector: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
snippet: <div class="gradient main-wrapper bg-animation-desktop" style="background-image: url(&quot;https://kilo-content.aircanada.com/ac/applications/…&quot;);">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-4-DIV
nodeLabel: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
path: 1,HTML,1,BODY,0,AC-HOME-ROOT,0,DIV,7,DIV,0,MAIN,0,DIV,3,AC-FLIGHTS,0,DIV,0,DIV,0,DIV,0,AC-DYNAMIC-BK,0,DIV
selector: div.ngx-ac-container > div.ac-primary-padded-content > ac-dynamic-bk.main-header-container > div.gradient
snippet: <div class="gradient main-wrapper bg-animation-desktop" style="background-image: url(&quot;https://kilo-content.aircanada.com/ac/applications/…&quot;);">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B184.8 KiB160 ms

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.2 s
URLTime Spent
aircanada.com/224 ms
aircanada.com/home/es/es/aco/flights334 ms
www.aircanada.com/home/es/es/aco/flights649 ms
www.aircanada.com/home/es/es/aco/flights0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 370 ms 645.4 KiB
URLTransfer SizeEst Savings
/pagead/managed/js/gpt/m202604140101/pubads_impl.js?cb=31...197.9 KiB151.7 KiB
www.aircanada.com/home/vendor.436b440afc06d651.js327.7 KiB109.6 KiB
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js110.3 KiB59.4 KiB
www.googletagmanager.com/gtag/js?id=DC-9772812&cx=c&gtm=4e64e1&bs=ctrl120.7 KiB56.2 KiB
www.aircanada.com/home/main.d033cf8802380eb9.js199.7 KiB48.2 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B183.2 KiB39.0 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B183.2 KiB39.0 KiB
s.go-mpulse.net/boomerang/95K7G-R6KA6-85CWB-9YW8G-QLP3N56.3 KiB36.6 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...152.8 KiB28.7 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...152.8 KiB28.7 KiB
assets.adobedtm.com/14307738146c/2d72065f81e7/launch-9e3b3ffc9904.min.js96.1 KiB27.8 KiB
www.aircanada.com/home/867.5c6ecab26fe17306.js57.8 KiB20.5 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.aircanada.com/assets/b23d8f289e32edec2065f3c335af8c367001194a0111.2 s956 ms5.7 ms
www.aircanada.com/home/es/es/aco/flights494 ms255 ms1.1 ms
Unattributable317 ms104 ms0.0 ms
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B310 ms257 ms28 ms
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...231 ms215 ms9.7 ms
www.aircanada.com/home/runtime.453919a8577c3fd2.js134 ms132 ms0.0 ms
www.aircanada.com/home/vendor.436b440afc06d651.js118 ms113 ms1.6 ms
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...106 ms86 ms8.2 ms
cdn.cookielaw.org/scripttemplates/202408.1.0/otBannerSdk.js71 ms49 ms10 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation2.2 s
Other356 ms
Style & Layout196 ms
Parse HTML & CSS108 ms
Script Parsing & Compilation82 ms
Garbage Collection58 ms
Rendering50 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
The page has an unload handler in a sub frame.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 41.1 KiB
URLTransfer SizeEst Savings
21.0 KiB18.3 KiB
@keyframes fadeIn{0%{opacity:0} …12.5 KiB12.2 KiB
@keyframes _ngcontent-ng-c2003155099_fadeIn{0%{opacity:0} …11.0 KiB10.6 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...363.4 KiB
www.aircanada.com/home/vendor.436b440afc06d651.js328.5 KiB
www.aircanada.com/home/main.d033cf8802380eb9.js200.6 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/n...191.7 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B184.8 KiB
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B184.7 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...177.3 KiB
/ac/applications/achomebeta/content/1.0.2140/assets/img/p...158.8 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...153.5 KiB
/6jkv/xGJ0/jfQ_/WDDX/sw/SbOaLzufkOYD/UkZyWg/VGs/fOBwefmYN...153.5 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
3d globe image ac-marketing-banner-globe.ad-container__marketing-banner > div.container-banner > picture.mkt-globe > img.mkt-globe-img
/ac/applications/achomebeta/content/1.0.2140/assets/img/g...
A Star Alliance member Se abre en una ventana nueva div.ngx-ac-wrapper > div.ngx-ac-libra-footer-star-alliance > a.ng-star-inserted > img.ng-star-inserted
/ac/applications/achomebeta/content/1.0.2140/assets/img/l...

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 40 user timings
●Avoid long main-thread tasks 7 long tasks found
●Avoid non-composited animations 2 animated elements found
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 250 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 360 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
93

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Disfrute del control aduanero previo de EE. UU. en Canadá Siéntase como un loc… div.peak-scroller-container > div.carousel-container > div.cards-carrousel__cards-container > div.cards-carrousel__card
¡Que no se lo cuenten! Este verano, esté donde el mondo cobra vida, en ciudade… div.peak-scroller-container > div.carousel-container > div.cards-carrousel__cards-container > div.cards-carrousel__card
Redefina su forma de relajarse Vuele con total comodidad en la clase Signature… div.peak-scroller-container > div.carousel-container > div.cards-carrousel__cards-container > div.cards-carrousel__card

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Buscar div.abc-form-element-flex > abc-affix.ng-star-inserted > div.abc-dir-ltr > button.abc-input-field-control

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Administrar Cookies div.ngx-ac-wrapper > div.ngx-ac-libra-footer-column > div.ngx-ac-libra-footer-column-item > a#OneTrustPrefCenter
nuestra política sobre cookies y tecnologías de seguimiento. div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link
○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`[accesskey]` values are unique
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
www.aircanada.com/assets/b23d8f289e32edec2065f3c335af8c367001194a011 line 141, col 127

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
/ac/applications/achomebeta/content/1.0.2140/assets/json/...
Failed to load resource: the server responded with a status of 403 ()

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
www.aircanada.com/home/vendor.436b440afc06d651.js
www.aircanada.com/home/main.d033cf8802380eb9.js
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B
www.aircanada.com/6jkv/xGJ0/jfQ_/WDDX/sw/Y7OaLzwrkOJzpNXE5S/EltsWg/dQd/0ewtKPG0B
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
83

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
/es/es/aco/home/fly/onboard/cabin-features/signature-serv...Más información

Format your HTML in a way that enables crawlers to better understand your app’s content.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Ir a reservar un vuelo div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Ir a contenido div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Ir a navegación principal div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Ir a los enlaces de pie de página div#skipNav > ul.ngx-ac-skip-link-list > li.ngx-ac-skip-link-item > a.ngx-ac-skip-link
Administrar Cookies div.ngx-ac-wrapper > div.ngx-ac-libra-footer-column > div.ngx-ac-libra-footer-column-item > a#OneTrustPrefCenter

To appear in search results, crawlers need access to your app.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid

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