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Audit Complete

Results for https://jetblue.com

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E-commerce · estimated Tracking: purchases
Brazil Brazil · Sao Paulo Completed: Apr 15, 2026 23:07 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)
C73

Site Health

Score: 73 / 100

Based on 8 categories, 0 sections

Room to improve — your 9.2s load time is above Google's 2.5s 'Good' threshold.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Good server performance with room for optimization.

Strong compliance posture across regulations.

Good content signals with minor gaps.

Reasonable footprint with room for optimization.

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

Fourthwall sites average 73
At average
Better than 28% of Fourthwall sites See full Fourthwall benchmark →
Apple sites average 73
At average
Better than 36% of Apple sites See full Apple 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 'isMobile' is missing the Secure flag

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

Security › Cookie Security
3

Cookie 'jbCountryCode' 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 →
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What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. 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.

Conversion Barriers

4 critical 4 warning

8 barrier(s) likely increasing bounce by ~34%.

Speed (2)

Page takes 9.2s to load

+12% bounce

Users abandon at ~3s — you're 6.7s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 2.7s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (2)

Layout shifts during page load

+3% bounce

Content movement causes mis-clicks on CTAs and form fields

Fix: Add width/height to images; reserve space for late-loading embeds

12 form field(s) without a label

+6% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Content (1)

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Navigation (1)

3 broken link(s) on the page

+5% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

€213 investment → €5,213/month returns + EUR 120,500,000 risk avoided

Payback period: < 1 month First-year ROI: +29336%

Investment

€213

2h · 5 findings

Monthly returns

€5,213 /mo

~€62,551 / year

  • Conversions recovered €5,211
  • Bandwidth savings €1.12

Regulatory risk avoided

EUR 120,500,000

if kept compliant

  • ePrivacy Directive EUR 100,000,000
  • GDPR EUR 20,000,000
  • EAA EUR 500,000

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

€213

2.5 developer hours at €85/hr

Based on European Union rates (€85/hr)

Quick wins
€213 5 fixes in ~150 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,668 / month at risk

~€120,500,013 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveGDPREAA
  • No privacy policy link detected
    GDPR: EUR 10,000 – EUR 20,000,000
  • Trackers detected but no cookie policy found
    GDPR: EUR 5,000 – EUR 10,000,000
  • Trackers detected but no cookie policy found
    GDPR: EUR 10,000 – EUR 20,000,000

+5 more

Bandwidth Waste

€1.12 /mo

15118.5 MB/mo × 0.074 EUR/GB

  • Optimize transfer: save ~1.5 MB per page load
    Saves €1.12/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

Was this report useful?

Thanks for your feedback!

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

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

22
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
69
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

2.58 s

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

9.24 s

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

2.70 s

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

0.238

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

9.73 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.

26.53 s

Detailed Report

Audit breakdown by category with detailed findings.

22

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
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...0.0 ms436.7 KiB
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue86400.0 s663.7 KiB
sdk.asapp.com/chat-sdk.js600.0 s119.4 KiB
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js86400.0 s271.1 KiB
cdn.dynamicyield.com/api/8791140/api_dynamic.js300.0 s106.7 KiB
cdn.dynamicyield.com/api/8791140/api_static.js28800.0 s111.8 KiB
edge.fullstory.com/s/fs.js3600.0 s79.8 KiB
js.appboycdn.com/web-sdk/6.3/braze.min.js14400.0 s63.7 KiB
cdn.dynamicyield.com/api/8791140/images/bd00dbfca44f.webp604800.0 s353.1 KiB
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js86400.0 s70.1 KiB
cdn.dynamicyield.com/api/8791140/images/c28152b90d8c.webp604800.0 s240.8 KiB
www.jetblue.com/_next/static/media/klarheit_book-s.p.0mkqyv87c5ss8.woff286400.0 s41.6 KiB
www.jetblue.com/_next/static/media/klarheit_semi-s.p.0aw9gf1e7~8aq.woff286400.0 s41.1 KiB
www.jetblue.com/_next/static/media/klarheit_xbold-s.p.149-m-o3~0rpb.woff286400.0 s40.3 KiB
www.jetblue.com/_next/static/chunks/0ae-y3ieog_ji.js86400.0 s37.3 KiB
www.jetblue.com/_next/static/chunks/0o_htt5ntz-6f.js86400.0 s31.1 KiB
static.jetblue.com/243baff993e46b2c0433/felog/felog.js?v=20.0 ms12.0 KiB
static.jetblue.com/243baff993e46b2c0433/felog/felog.js0.0 ms12.0 KiB
www.jetblue.com/_next/static/chunks/06n61u~q3t7qv.css86400.0 s19.3 KiB
www.jetblue.com/_next/static/chunks/181sud9sx5lcd.js86400.0 s18.3 KiB
cdn.dynamicyield.com/api/8791140/images/74ac7ae85fc1.webp604800.0 s70.6 KiB
www.jetblue.com/_next/static/chunks/0t8sj65wk580x.js86400.0 s13.6 KiB
/notice?domain=jetblue.com&c=teconsent&js=nj&noticeType=b...3600.0 s6.3 KiB
www.jetblue.com/_next/static/chunks/17z1w7bys5_4s.js86400.0 s11.5 KiB
www.jetblue.com/_next/static/chunks/0c2yzwgt6~uxc.js86400.0 s10.9 KiB
www.jetblue.com/_next/static/chunks/0axj_zje~44.0.js86400.0 s10.0 KiB
www.jetblue.com/_next/static/chunks/08v1a~u9cg.d6.js86400.0 s5.7 KiB
www.jetblue.com/_next/static/media/android-icon.155471c4mo1vh.png86400.0 s5.5 KiB
www.jetblue.com/_next/static/chunks/turbopack-0xf4bb-rcwobw.js86400.0 s5.1 KiB
consent-pref.trustarc.com/images/arrow.png0.0 ms1.4 KiB
www.jetblue.com/_next/static/chunks/0fb7w_mlgdl6f.js86400.0 s2.4 KiB
www.jetblue.com/_next/static/chunks/16n-h467x-sa8.css86400.0 s1.1 KiB

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.23817000000000002] map[node:map[boundingRect:map[bottom:545 height:464 left:37 right:375 top:81 width:339] lhId:page-11-DIV nodeLabel:Did someone say…cookies? We value your privacy. We use cookies to provide a us… path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,0,DIV,0,DIV selector:div.wrapper > div > div.mainContent > div snippet:<div> type:node] score:0.093456 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:605 height:20 left:320 right:375 top:585 width:55] lhId:page-20-IMG nodeLabel:Company logo for TrustArc path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,1,DIV,1,DIV,3,A,0,IMG selector:div.footer > div.right > a > img.inline-e3jf3l snippet:<img class="inline-e3jf3l" alt="Company logo for TrustArc" src="https://consent.trustarc.com/get?name=Powered-By-TrustArc.png" target="_blank"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:615 height:46 left:21 right:391 top:569 width:371] lhId:page-10-DIV nodeLabel:Privacy Policy Powered by : path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,1,DIV selector:div.wrapper > div > div.footer snippet:<div class="footer" style=""> type:node] score:0.066865 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:605 height:20 left:320 right:375 top:585 width:55] lhId:page-20-IMG nodeLabel:Company logo for TrustArc path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,1,DIV,1,DIV,3,A,0,IMG selector:div.footer > div.right > a > img.inline-e3jf3l snippet:<img class="inline-e3jf3l" alt="Company logo for TrustArc" src="https://consent.trustarc.com/get?name=Powered-By-TrustArc.png" target="_blank"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:545 height:464 left:37 right:375 top:81 width:339] lhId:page-11-DIV nodeLabel:Did someone say…cookies? We value your privacy. We use cookies to provide a us… path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,0,DIV,0,DIV selector:div.wrapper > div > div.mainContent > div snippet:<div> type:node] score:0.057923 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:605 height:20 left:320 right:375 top:585 width:55] lhId:page-20-IMG nodeLabel:Company logo for TrustArc path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,1,DIV,1,DIV,3,A,0,IMG selector:div.footer > div.right > a > img.inline-e3jf3l snippet:<img class="inline-e3jf3l" alt="Company logo for TrustArc" src="https://consent.trustarc.com/get?name=Powered-By-TrustArc.png" target="_blank"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:615 height:46 left:21 right:391 top:569 width:371] lhId:page-10-DIV nodeLabel:Privacy Policy Powered by : path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,1,DIV selector:div.wrapper > div > div.footer snippet:<div class="footer" style=""> type:node] score:0.018147] map[node:map[boundingRect:map[bottom:161 height:81 left:37 right:310 top:80 width:274] lhId:page-15-SPAN nodeLabel:Did someone say…cookies? path:1,HTML,1,BODY,106,DIV,0,DIV,2,DIV,a,#document-fragment,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,H2,0,SPAN selector:div > div#cookieMainHeader > h2 > span snippet:<span> type:node] score:0.001779]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
consent.trustarc.com/get?name=ESKlarheitGrotesk-Smbd.woff65 ms
consent.trustarc.com/get?name=ESKlarheitGrotesk-Bk.woff55 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
hammock on the beach div.dy-travel-deals__cards > article#pb3_jbv_up-to-50-off-plus-200 > div.dy-card__image-wrapper > img#pb3_jbv_up-to-50-off-plus-200_image
cdn.dynamicyield.com/api/8791140/images/bd00dbfca44f.webp352.1 KiB309.2 KiB
aerial beach view div.dy-travel-deals__cards > article#pb1_brand_summer-merch-premium > div.dy-card__image-wrapper > img#pb1_brand_summer-merch-premium_image
cdn.dynamicyield.com/api/8791140/images/c28152b90d8c.webp240.0 KiB197.1 KiB
jetBlue credit card on a beach background div.dy-travel-deals__cards > article#pb2_bcus_feblto > div.dy-card__image-wrapper > img#pb2_bcus_feblto_image
cdn.dynamicyield.com/api/8791140/images/74ac7ae85fc1.webp69.9 KiB48.4 KiB
Nantucket street div.m-4 > div.group > div.relative > img.rounded-t-md
/dam/ui-assets/imagery/promo-blocks/nantucket-memorial-da...63.7 KiB29.3 KiB
Nantucket street div.m-4 > div.group > div.relative > img.rounded-t-md
/dam/ui-assets/imagery/promo-blocks/nantucket-memorial-da...63.7 KiB29.3 KiB
div > main#main > div.relative > img.object-cover div > main#main > div.relative > img.object-cover
/dam/ui-assets/imagery/booker/beach-greenery-booker-.jpg?...30.3 KiB26.1 KiB
div > main#main > div.relative > img.object-cover div > main#main > div.relative > img.object-cover
/dam/ui-assets/imagery/booker/beach-greenery-booker-.jpg?...30.3 KiB26.1 KiB
dublin, ireland div.m-4 > div.group > div.relative > img.rounded-t-md
/dam/ui-assets/imagery/promo-blocks/Dublin-merch-st-patri...42.2 KiB14.3 KiB
dublin, ireland div.m-4 > div.group > div.relative > img.rounded-t-md
/dam/ui-assets/imagery/promo-blocks/Dublin-merch-st-patri...42.2 KiB14.3 KiB
Trip activities a.inline-block > section > div.relative > img
/dam/ui-assets/imagery/marketing/Airways-HP-ACTIVITIES-12...45.0 KiB7.5 KiB
Trip activities a.inline-block > section > div.relative > img
/dam/ui-assets/imagery/marketing/Airways-HP-ACTIVITIES-12...45.0 KiB7.5 KiB
Family vacations a.inline-block > section > div.relative > img
/dam/ui-assets/imagery/marketing/Airways-HP-FAMILY-1280x7...43.3 KiB5.8 KiB
Family vacations a.inline-block > section > div.relative > img
/dam/ui-assets/imagery/marketing/Airways-HP-FAMILY-1280x7...43.3 KiB5.8 KiB
div.inset-x-0 > div.flex > div.relative > img.object-contain div.inset-x-0 > div.flex > div.relative > img.object-contain
www.jetblue.com/_next/static/media/android-icon.155471c4mo1vh.png4.6 KiB4.0 KiB

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-9-IMG
nodeLabel: div > main#main > div.relative > img.object-cover
path: 4,MAIN,1,DIV,0,IMG
selector: div > main#main > div.relative > img.object-cover
snippet: <img alt="" loading="lazy" decoding="async" data-nimg="fill" class="object-cover" style="position: absolute; height: 100%; width: 100%; inset: 0px;" sizes="100vw" srcset="https://cms.jetblue.com/dam/ui-assets/imagery/booker/beach-greenery-booker…" src="https://cms.jetblue.com/dam/ui-assets/imagery/booker/beach-greenery-booker…">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
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
value: No additional origins are good candidates for preconnecting

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 Size
www.jetblue.com/_next/static/chunks/06n61u~q3t7qv.css19.3 KiB
www.jetblue.com/_next/static/chunks/16n-h467x-sa8.css1.1 KiB

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

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

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: 1.1 s
URLTime Spent
jetblue.com/1.1 s
www.jetblue.com/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Did someone say…cookies? We value your privacy. We use cookies to provide a us… div.wrapper > div > div.mainContent > div
0.093
Privacy Policy Powered by : div.wrapper > div > div.footer
0.067
Did someone say…cookies? We value your privacy. We use cookies to provide a us… div.wrapper > div > div.mainContent > div
0.058
Privacy Policy Powered by : div.wrapper > div > div.footer
0.018
Did someone say…cookies? div > div#cookieMainHeader > h2 > span
0.002

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.

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: 1.2 s 1.3 MiB
URLTransfer SizeEst Savings
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...436.2 KiB292.8 KiB
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue662.1 KiB250.2 KiB
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js265.7 KiB196.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM192.9 KiB93.9 KiB
sdk.asapp.com/chat-sdk.js118.8 KiB81.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM192.9 KiB74.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-T69MLS2R117.7 KiB68.4 KiB
cdn.dynamicyield.com/api/8791140/api_static.js111.3 KiB58.9 KiB
js.appboycdn.com/web-sdk/6.3/braze.min.js63.4 KiB55.4 KiB
edge.fullstory.com/s/fs.js79.3 KiB53.0 KiB
js.appboycdn.com/web-sdk/6.3/braze.min.js63.4 KiB45.2 KiB
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js69.1 KiB21.8 KiB
consent.trustarc.com/asset/adv-bundle.js?v=v1.7-172977.8 KiB21.0 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
/st?sec=8791140&ref=&scriptVersion=2.83.0&inHead=true&id=...3.6 s3.3 s12 ms
cdn.dynamicyield.com/api/8791140/api_dynamic.js2.0 s1.6 s168 ms
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js1.7 s1.5 s31 ms
Unattributable1.4 s53 ms0.0 ms
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...1.3 s904 ms54 ms
www.jetblue.com/1.1 s253 ms108 ms
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM732 ms444 ms279 ms
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue370 ms213 ms85 ms
consent.trustarc.com/asset/notice.js/v/v1.7-1729232 ms153 ms16 ms
edge.fullstory.com/s/fs.js200 ms157 ms36 ms
www.googletagmanager.com/gtm.js?id=GTM-T69MLS2R170 ms123 ms46 ms
cdn.dynamicyield.com/api/8791140/api_static.js153 ms88 ms44 ms
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js135 ms12 ms105 ms
js.appboycdn.com/web-sdk/6.3/braze.min.js129 ms52 ms75 ms
www.jetblue.com/_next/static/chunks/0ae-y3ieog_ji.js93 ms62 ms17 ms
www.jetblue.com/_next/static/chunks/181sud9sx5lcd.js80 ms70 ms6.0 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 Evaluation9.1 s
Other2.1 s
Script Parsing & Compilation1.1 s
Style & Layout617 ms
Garbage Collection322 ms
Rendering183 ms
Parse HTML & CSS159 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
Pages with cache-control:no-store header cannot enter back/forward cache.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

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.5 KiB
URLTransfer SizeEst Savings
static.jetblue.com/243baff993e46b2c0433/felog/felog.js11.7 KiB2.7 KiB
static.jetblue.com/243baff993e46b2c0433/felog/felog.js?v=211.7 KiB2.7 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
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue663.7 KiB
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...436.7 KiB
cdn.dynamicyield.com/api/8791140/images/bd00dbfca44f.webp353.1 KiB
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js271.1 KiB
cdn.dynamicyield.com/api/8791140/images/c28152b90d8c.webp240.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM193.3 KiB
www.jetblue.com/en/find-flights-memorial-day-weekend?_rsc=vmf80144.4 KiB
www.jetblue.com/_next/static/chunks/0.mx63q5c-pwu.wasm132.3 KiB
sdk.asapp.com/chat-sdk.js119.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-T69MLS2R117.8 KiB

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

●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Reduce unused CSS
●User Timing marks and measures 38 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 1 animated element found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 130 ms
●Server Backend Latencies 630 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
○INP breakdown
94

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Powered by div > div.footer > div.right > label

These are opportunities to improve the legibility of your content.

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
body > div#pop-div208391309689498112 > div#pop-div308444348287444892 > div#pop-frame08159720616093769 body > div#pop-div208391309689498112 > div#pop-div308444348287444892 > div#pop-frame08159720616093769

These are opportunities to improve keyboard navigation in your application.

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
Beat the summer rush. Are you ready for it? Lock in great deals with flights a… div.dy-travel-deals > div.dy-travel-deals__inner > div.dy-travel-deals__cards > article#pb1_brand_summer-merch-premium
Earn 60,000 70,000 bonus TrueBlue points. 70,000 bonus points = $700 in award … div.dy-travel-deals > div.dy-travel-deals__inner > div.dy-travel-deals__cards > article#pb2_bcus_feblto
Up to 50% off flights with a package. Save big on the flight portion of your v… div.dy-travel-deals > div.dy-travel-deals__inner > div.dy-travel-deals__cards > article#pb3_jbv_up-to-50-off-plus-200
○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
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[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.
●`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
●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
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Image elements do not have `[alt]` attributes that are redundant text.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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.
○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.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
69

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
consent-pref.trustarc.com/images/arrow.pngAutomatically upgraded to HTTPS

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
Cruises a.inline-block > section > div.relative > img
/dam/ui-assets/imagery/marketing/Airways-HP-CRUISE-1280x7...346 x 195 (1.77)640 x 385 (1.66)

General

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
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js
Error: Minified React error #418; visit https://react.dev/errors/418?args[]=HTML&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at rX (https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:46251) at iu (https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:97292) at sd (https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:137982) at https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:132868 at se (https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:132969) at s$ (https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:159533) at MessagePort.O (https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js:1:7700)
accounts.jetblue.com/api/v1/sessions/me
Failed to load resource: the server responded with a status of 404 ()
static.jetblue.com/243baff993e46b2c0433/felog/felog.js?v=2
Uncaught SyntaxError: Identifier 'loggerRoute' has already been declared
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe... line 1, col 21256
Uncaught TypeError: Cannot read properties of null (reading 'stack')
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe... line 1, col 14325
Unhandled Promise rejection: timeout ; Zone: <root> ; Task: Promise.then ; Value: Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938) Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938)
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe... line 1, col 14325
Unhandled Promise rejection: timeout ; Zone: <root> ; Task: Promise.then ; Value: Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938) Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938)

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Mixed content

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.

URLMap URL
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.jswww.jetblue.com/_next/static/chunks/0e8y6936smzxs.js.map
www.jetblue.com/_next/static/chunks/0ae-y3ieog_ji.jswww.jetblue.com/_next/static/chunks/0rww7575sio~a.js.map
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.jswww.jetblue.com/_next/static/chunks/11jyml2ny2wmv.js.map
www.jetblue.com/_next/static/chunks/turbopack-0xf4bb-rcwobw.jswww.jetblue.com/_next/static/chunks/0taf5okhn1qhk.js.map
www.jetblue.com/_next/static/chunks/181sud9sx5lcd.jswww.jetblue.com/_next/static/chunks/0qy7hgd~98zok.js.map
www.jetblue.com/_next/static/chunks/17z1w7bys5_4s.jswww.jetblue.com/_next/static/chunks/0ct26od51bkps.js.map
www.jetblue.com/_next/static/chunks/0t8sj65wk580x.jswww.jetblue.com/_next/static/chunks/04px4mpv7xft8.js.map
www.jetblue.com/_next/static/chunks/0o_htt5ntz-6f.jswww.jetblue.com/_next/static/chunks/0k1a6kof.05-..js.map
www.jetblue.com/_next/static/chunks/0fb7w_mlgdl6f.jswww.jetblue.com/_next/static/chunks/0.s-.6i73xbyh.js.map
www.jetblue.com/_next/static/chunks/0c2yzwgt6~uxc.jswww.jetblue.com/_next/static/chunks/0t8r~wknqbepy.js.map
www.jetblue.com/_next/static/chunks/0axj_zje~44.0.jswww.jetblue.com/_next/static/chunks/10akqu3j4-uej.js.map
www.jetblue.com/_next/static/chunks/08v1a~u9cg.d6.jswww.jetblue.com/_next/static/chunks/08etya9mdk4nr.js.map
●Avoids deprecated APIs
●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
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
100

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.

○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
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

73
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
69
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

1.15 s

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

2.21 s

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

207 ms

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

0.037

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

2.86 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.

5.28 s

Detailed Report

Audit breakdown by category with detailed findings.

73

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
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...0.0 ms436.7 KiB
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue86400.0 s663.7 KiB
sdk.asapp.com/chat-sdk.js600.0 s119.4 KiB
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js86400.0 s270.9 KiB
cdn.dynamicyield.com/api/8791140/api_dynamic.js300.0 s106.7 KiB
cdn.dynamicyield.com/api/8791140/api_static.js28800.0 s111.8 KiB
edge.fullstory.com/s/fs.js3600.0 s79.9 KiB
js.appboycdn.com/web-sdk/6.3/braze.min.js14400.0 s63.7 KiB
cdn.dynamicyield.com/api/8791140/images/bd00dbfca44f.webp604800.0 s353.1 KiB
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js86400.0 s69.9 KiB
cdn.dynamicyield.com/api/8791140/images/c28152b90d8c.webp604800.0 s240.8 KiB
www.jetblue.com/_next/static/media/klarheit_book-s.p.0mkqyv87c5ss8.woff286400.0 s41.5 KiB
www.jetblue.com/_next/static/media/klarheit_semi-s.p.0aw9gf1e7~8aq.woff286400.0 s41.0 KiB
www.jetblue.com/_next/static/media/klarheit_xbold-s.p.149-m-o3~0rpb.woff286400.0 s40.2 KiB
www.jetblue.com/_next/static/chunks/0ae-y3ieog_ji.js86400.0 s36.7 KiB
www.jetblue.com/_next/static/chunks/0o_htt5ntz-6f.js86400.0 s30.4 KiB
static.jetblue.com/243baff993e46b2c0433/felog/felog.js?v=20.0 ms12.0 KiB
static.jetblue.com/243baff993e46b2c0433/felog/felog.js0.0 ms12.0 KiB
www.jetblue.com/_next/static/chunks/06n61u~q3t7qv.css86400.0 s18.7 KiB
www.jetblue.com/_next/static/chunks/181sud9sx5lcd.js86400.0 s18.1 KiB
cdn.dynamicyield.com/api/8791140/images/74ac7ae85fc1.webp604800.0 s70.6 KiB
www.jetblue.com/_next/static/chunks/0t8sj65wk580x.js86400.0 s13.0 KiB
/notice?domain=jetblue.com&c=teconsent&js=nj&noticeType=b...3600.0 s6.3 KiB
www.jetblue.com/_next/static/chunks/17z1w7bys5_4s.js86400.0 s11.4 KiB
www.jetblue.com/_next/static/chunks/0c2yzwgt6~uxc.js86400.0 s10.7 KiB
www.jetblue.com/_next/static/chunks/0axj_zje~44.0.js86400.0 s9.4 KiB
/SIE/?Q_ZID=ZN_9NrVZpkFcamQFbo3600.0 s4.6 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...604800.0 s35.9 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...604800.0 s30.9 KiB
www.jetblue.com/_next/static/chunks/08v1a~u9cg.d6.js86400.0 s5.1 KiB
/dxjsmodule/FeedbackButtonModule.js?Q_CLIENTVERSION=2.46....604800.0 s19.4 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...604800.0 s18.6 KiB
www.jetblue.com/_next/static/chunks/turbopack-0xf4bb-rcwobw.js86400.0 s4.5 KiB
consent-pref.trustarc.com/images/arrow.png0.0 ms1.4 KiB
www.jetblue.com/_next/static/chunks/0fb7w_mlgdl6f.js86400.0 s2.2 KiB
/dxjsmodule/1.bc67e778235741631577.chunk.js?Q_CLIENTVERSI...604800.0 s7.1 KiB
www.jetblue.com/_next/static/chunks/16n-h467x-sa8.css86400.0 s493 B
/dxjsmodule/7.f7df015b06d8a90ce822.chunk.js?Q_CLIENTVERSI...604800.0 s1.4 KiB

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
consent.trustarc.com/get?name=ESKlarheitGrotesk-Bk.woff365 ms
consent.trustarc.com/get?name=ESKlarheitGrotesk-Smbd.woff200 ms

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:21.173 source:map[column:7461 line:1 type:source-location url:https://www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:15.682 source:map[column:822 line:6 type:source-location url:https://www.jetblue.com/_next/static/chunks/0o_htt5ntz-6f.js urlProvider:network]] map[reflowTime:21.173 source:map[column:42307 line:15 type:source-location url:https://www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js urlProvider:network]]]

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
hammock on the beach div.dy-travel-deals__cards > article#pb3_jbv_up-to-50-off-plus-200 > div.dy-card__image-wrapper > img#pb3_jbv_up-to-50-off-plus-200_image
cdn.dynamicyield.com/api/8791140/images/bd00dbfca44f.webp352.1 KiB334.0 KiB
aerial beach view div.dy-travel-deals__cards > article#pb1_brand_summer-merch-premium > div.dy-card__image-wrapper > img#pb1_brand_summer-merch-premium_image
cdn.dynamicyield.com/api/8791140/images/c28152b90d8c.webp240.0 KiB221.9 KiB
div > main#main > div.relative > img.object-cover div > main#main > div.relative > img.object-cover
/dam/ui-assets/imagery/booker/beach-greenery-booker-.jpg?...178.1 KiB108.5 KiB
dublin, ireland div.m-4 > div.group > div.relative > img.rounded-t-md
/dam/ui-assets/imagery/promo-blocks/Dublin-merch-st-patri...116.6 KiB98.7 KiB
jetBlue credit card on a beach background div.dy-travel-deals__cards > article#pb2_bcus_feblto > div.dy-card__image-wrapper > img#pb2_bcus_feblto_image
cdn.dynamicyield.com/api/8791140/images/74ac7ae85fc1.webp69.9 KiB60.5 KiB
Nantucket street div.m-4 > div.group > div.relative > img.rounded-t-md
/dam/ui-assets/imagery/promo-blocks/nantucket-memorial-da...63.7 KiB36.6 KiB

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-2-IMG
nodeLabel: div > main#main > div.relative > img.object-cover
path: 1,HTML,1,BODY,5,DIV,4,MAIN,1,DIV,0,IMG
selector: div > main#main > div.relative > img.object-cover
snippet: <img alt="" loading="lazy" decoding="async" data-nimg="fill" class="object-cover" style="position: absolute; height: 100%; width: 100%; inset: 0px;" sizes="100vw" srcset="https://cms.jetblue.com/dam/ui-assets/imagery/booker/beach-greenery-booker…" src="https://cms.jetblue.com/dam/ui-assets/imagery/booker/beach-greenery-booker…">

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
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
value: No additional origins are good candidates for preconnecting

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 Size
www.jetblue.com/_next/static/chunks/16n-h467x-sa8.css493 B
www.jetblue.com/_next/static/chunks/06n61u~q3t7qv.css18.7 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: 588 ms
URLTime Spent
jetblue.com/588 ms
www.jetblue.com/0.0 ms

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: 210 ms 1.3 MiB
URLTransfer SizeEst Savings
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...436.2 KiB292.9 KiB
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue662.1 KiB250.2 KiB
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js265.7 KiB196.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM193.1 KiB94.1 KiB
sdk.asapp.com/chat-sdk.js118.8 KiB81.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM193.1 KiB74.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-T69MLS2R117.7 KiB68.4 KiB
cdn.dynamicyield.com/api/8791140/api_static.js111.3 KiB58.8 KiB
js.appboycdn.com/web-sdk/6.3/braze.min.js63.4 KiB55.4 KiB
edge.fullstory.com/s/fs.js79.3 KiB52.8 KiB
js.appboycdn.com/web-sdk/6.3/braze.min.js63.4 KiB45.2 KiB
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js69.1 KiB23.1 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...35.7 KiB21.0 KiB
consent.trustarc.com/asset/adv-bundle.js?v=v1.7-172977.8 KiB21.0 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...30.9 KiB20.8 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
/st?sec=8791140&ref=&scriptVersion=2.83.0&inHead=true&id=...968 ms879 ms3.6 ms
cdn.dynamicyield.com/api/8791140/api_dynamic.js569 ms472 ms42 ms
www.jetblue.com/_next/static/chunks/0_wckrpl-en4q.js426 ms365 ms8.8 ms
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...376 ms290 ms13 ms
Unattributable361 ms13 ms0.0 ms
www.jetblue.com/230 ms10 ms31 ms
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM218 ms126 ms76 ms
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js92 ms59 ms28 ms
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue69 ms48 ms20 ms
consent.trustarc.com/asset/notice.js/v/v1.7-172955 ms38 ms3.9 ms
edge.fullstory.com/s/fs.js50 ms37 ms9.2 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 Evaluation2.5 s
Other528 ms
Script Parsing & Compilation321 ms
Style & Layout195 ms
Garbage Collection71 ms
Rendering45 ms
Parse HTML & CSS33 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
Pages with cache-control:no-store header cannot enter back/forward cache.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

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.5 KiB
URLTransfer SizeEst Savings
static.jetblue.com/243baff993e46b2c0433/felog/felog.js11.7 KiB2.7 KiB
static.jetblue.com/243baff993e46b2c0433/felog/felog.js?v=211.7 KiB2.7 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
sdk.joinsherpa.io/widget.js?appId=spY3MjM0OT&affiliateId=jetblue663.7 KiB
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe...436.7 KiB
cdn.dynamicyield.com/api/8791140/images/bd00dbfca44f.webp353.1 KiB
www.jetblue.com/_next/static/chunks/0nhjsm87u22zm.js270.9 KiB
cdn.dynamicyield.com/api/8791140/images/c28152b90d8c.webp240.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J92P6SM193.4 KiB
/dam/ui-assets/imagery/booker/beach-greenery-booker-.jpg?...178.5 KiB
www.jetblue.com/en/find-flights-memorial-day-weekend?_rsc=vmf80143.5 KiB
www.jetblue.com/en/flights-to-europe?_rsc=vmf80135.1 KiB
/media-em/b6/cities/CUR.jpg?height=500&quality=85&format=...134.7 KiB

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

●Max Potential First Input Delay 120 ms
●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Reduce unused CSS
●User Timing marks and measures 38 user timings
●Avoid long main-thread tasks 9 long tasks found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 130 ms
●Server Backend Latencies 620 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
●Avoid large layout shifts 5 layout shifts found
○INP breakdown
○Avoid non-composited animations
94

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Powered by div > div.footer > div.right > label

These are opportunities to improve the legibility of your content.

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
body > div#pop-div209743089784851777 > div#pop-div305953576366890888 > div#pop-frame09435318925199103 body > div#pop-div209743089784851777 > div#pop-div305953576366890888 > div#pop-frame09435318925199103

These are opportunities to improve keyboard navigation in your application.

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
Beat the summer rush. Are you ready for it? Lock in great deals with flights a… div.dy-travel-deals > div.dy-travel-deals__inner > div.dy-travel-deals__cards > article#pb1_brand_summer-merch-premium
Earn 60,000 70,000 bonus TrueBlue points. 70,000 bonus points = $700 in award … div.dy-travel-deals > div.dy-travel-deals__inner > div.dy-travel-deals__cards > article#pb2_bcus_feblto
Up to 50% off flights with a package. Save big on the flight portion of your v… div.dy-travel-deals > div.dy-travel-deals__inner > div.dy-travel-deals__cards > article#pb3_jbv_up-to-50-off-plus-200
○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
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[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.
●`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
●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
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Image elements do not have `[alt]` attributes that are redundant text.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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.
○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.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
69

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
consent-pref.trustarc.com/images/arrow.pngAutomatically upgraded to HTTPS

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
Cruises a.inline-block > section > div.relative > img
/dam/ui-assets/imagery/marketing/Airways-HP-CRUISE-1280x7...323 x 182 (1.77)384 x 231 (1.66)

General

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
accounts.jetblue.com/api/v1/sessions/me
Failed to load resource: the server responded with a status of 404 ()
static.jetblue.com/243baff993e46b2c0433/felog/felog.js?v=2
Uncaught SyntaxError: Identifier 'loggerRoute' has already been declared
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe... line 1, col 21256
Uncaught TypeError: Cannot read properties of null (reading 'stack')
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe... line 1, col 14325
Unhandled Promise rejection: timeout ; Zone: <root> ; Task: Promise.then ; Value: Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938) Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938)
/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrappe... line 1, col 14325
Unhandled Promise rejection: timeout ; Zone: <root> ; Task: Promise.then ; Value: Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938) Error: timeout at a (https://cdn.dynamicyield.com/api/8791140/api_dynamic.js:1:1198000) at L.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:28226) at v.invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:7154) at M.runTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:2549) at invokeTask (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8205) at invoke (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:8106) at m.args.<computed> (https://static.jetblue.com/49b10c8ad172622fbc74/dist/wc-auth-wrapper/wc-auth-wrapper-element.js:2:27938)

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Mixed content
●Avoids deprecated APIs
●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
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
100

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.

○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
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

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