Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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

Performance issues directly impact user engagement and conversion rates.

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.

Request	Cache TTL	Transfer Size
js.hsforms.net/forms/v2.js	300.0 s	193.8 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js	86400.0 s	129.0 KiB
cdn.heapanalytics.com/js/heap-2573639223.js	120.0 s	38.8 KiB
a.pub.network/flightaware-com/pubfig.min.js	1800.0 s	26.3 KiB
cdn.cookielaw.org/consent/1e071528-f870-4d75-8811-974a2ff4e73b/OtAutoBlock.js	86400.0 s	40.4 KiB
pagead2.googlesyndication.com/pagead/show_companion_ad.js?fcd=true	3600.0 s	11.7 KiB
/logos/1d78294b-889a-4731-ba8f-8f555c7478c7/4efc215c-6e3c...	86400.0 s	12.0 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg	86400.0 s	2.5 KiB
cdn.cookielaw.org/logos/static/ot_close.svg	86400.0 s	626 B

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:0.851182] map[node:map[boundingRect:map[bottom:5662 height:761 left:0 right:1350 top:4900 width:1350] lhId:page-6-FOOTER nodeLabel:ABOUT About FlightAware Newsroom Advertise With Us Careers Webinars Blog Engine… path:1,HTML,1,BODY,8,FOOTER selector:body > footer.footer snippet:<footer class="footer bg-primary flex h-full w-full flex-row place-content-center" data-testid="footer"> type:node] score:0.809574 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:5017 height:60 left:176 right:327 top:4956 width:151] lhId:page-13-IMG nodeLabel:FlightAware logo path:1,HTML,1,BODY,8,FOOTER,0,DIV,0,DIV,0,DIV,0,IMG selector:div.bg-primary > div.flex > div.mb-6 > img.undefined snippet:<img src="data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwIiBoZWlnaHQ9IjQwIiB2aWV3Qm94…" alt="FlightAware logo" width="151" height="60" class="undefined min-w-[151px]" data-testid="logo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:5662 height:761 left:0 right:1350 top:4900 width:1350] lhId:page-6-FOOTER nodeLabel:ABOUT About FlightAware Newsroom Advertise With Us Careers Webinars Blog Engine… path:1,HTML,1,BODY,8,FOOTER selector:body > footer.footer snippet:<footer class="footer bg-primary flex h-full w-full flex-row place-content-center" data-testid="footer"> type:node] score:0.041608 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:5017 height:60 left:176 right:327 top:4956 width:151] lhId:page-13-IMG nodeLabel:FlightAware logo path:1,HTML,1,BODY,8,FOOTER,0,DIV,0,DIV,0,DIV,0,IMG selector:div.bg-primary > div.flex > div.mb-6 > img.undefined snippet:<img src="data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwIiBoZWlnaHQ9IjQwIiB2aWV3Qm94…" alt="FlightAware logo" width="151" height="60" class="undefined min-w-[151px]" data-testid="logo"> type:node]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:3.7e-05] map[node:map[boundingRect:map[bottom:393 height:19 left:533 right:537 top:374 width:4] lhId:page-7-SPAN nodeLabel: path:1,HTML,1,BODY,6,MAIN,2,DIV,2,DIV,1,SECTION,0,DIV,0,DIV,1,FORM,1,DIV,2,SPAN selector:div.input-md > form.group > div.overflow-hidden > span snippet:<span data-testid="lastphrase"> type:node] score:2.7e-05] map[node:map[boundingRect:map[bottom:393 height:19 left:533 right:537 top:374 width:4] lhId:page-7-SPAN nodeLabel: path:1,HTML,1,BODY,6,MAIN,2,DIV,2,DIV,1,SECTION,0,DIV,0,DIV,1,FORM,1,DIV,2,SPAN selector:div.input-md > form.group > div.overflow-hidden > span snippet:<span data-testid="lastphrase"> type:node] score:1e-05]]

items: [map[node:map[type:text value:Total] score:0.007583] map[node:map[boundingRect:map[bottom:940 height:89 left:0 right:1350 top:851 width:1350] lhId:page-8-DIV nodeLabel:This website uses cookies to enhance user experience and to analyze performance… path:1,HTML,1,BODY,58,DIV,1,DIV selector:body > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat bottom ot-wo-title vertical-align-content" tabindex="0" style="bottom: 0px;"> type:node] score:0.003665] map[node:map[boundingRect:map[bottom:940 height:89 left:0 right:1350 top:851 width:1350] lhId:page-8-DIV nodeLabel:This website uses cookies to enhance user experience and to analyze performance… path:1,HTML,1,BODY,58,DIV,1,DIV selector:body > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat bottom ot-wo-title vertical-align-content" tabindex="0" style="bottom: 0px;"> type:node] score:0.003135] map[node:map[boundingRect:map[bottom:940 height:89 left:0 right:1350 top:851 width:1350] lhId:page-8-DIV nodeLabel:This website uses cookies to enhance user experience and to analyze performance… path:1,HTML,1,BODY,58,DIV,1,DIV selector:body > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat bottom ot-wo-title vertical-align-content" tabindex="0" style="bottom: 0px;"> type:node] score:0.000783]]

items: [map[node:map[type:text value:Total] score:5.6e-05] map[node:map[boundingRect:map[bottom:393 height:19 left:533 right:537 top:374 width:4] lhId:page-7-SPAN nodeLabel: path:1,HTML,1,BODY,6,MAIN,2,DIV,2,DIV,1,SECTION,0,DIV,0,DIV,1,FORM,1,DIV,2,SPAN selector:div.input-md > form.group > div.overflow-hidden > span snippet:<span data-testid="lastphrase"> type:node] score:4.3e-05] map[node:map[boundingRect:map[bottom:393 height:19 left:533 right:537 top:374 width:4] lhId:page-7-SPAN nodeLabel: path:1,HTML,1,BODY,6,MAIN,2,DIV,2,DIV,1,SECTION,0,DIV,0,DIV,1,FORM,1,DIV,2,SPAN selector:div.input-md > form.group > div.overflow-hidden > span snippet:<span data-testid="lastphrase"> type:node] score:8e-06] map[node:map[boundingRect:map[bottom:393 height:19 left:533 right:537 top:374 width:4] lhId:page-7-SPAN nodeLabel: path:1,HTML,1,BODY,6,MAIN,2,DIV,2,DIV,1,SECTION,0,DIV,0,DIV,1,FORM,1,DIV,2,SPAN selector:div.input-md > form.group > div.overflow-hidden > span snippet:<span data-testid="lastphrase"> type:node] score:5e-06]]

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.

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:83.902 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.

	URL	Resource Size	Est Savings
Elevate your business with AI-assisted technology from FlightAware Foresight. `main.bg-p-50 > div.mt-22 > div.bg-neutral > img.mx-auto`	/_next/image/?url=%2Fhomepage-assets%2Fimages%2Fforesight...	209.8 KiB	183.4 KiB
Secure, private fleet tracking. Keep track of every aircraft in your private fl… `body > main.bg-p-50 > div.mt-22`	www.flightaware.com/homepage-assets/images/globaladbg.avif	210.5 KiB	98.0 KiB
hero background `main.bg-p-50 > div.bg-p-800 > div.heap-desktop-skin-tracker > img.absolute`	/_next/image/?url=%2Fhomepage-assets%2Fimages%2Fherobg-1....	89.4 KiB	21.5 KiB
Gulfstream Aerospace Gulfstream G650 (N312AT) `div.bg-neutral > div.carousel > div.carousel-item > img.min-h-full`	/_next/image/?url=https%3A%2F%2Fphotos.flightaware.com%2F...	39.3 KiB	21.5 KiB
Boeing 757-200 `div.bg-neutral > div.carousel > div.carousel-item > img.min-h-full`	/_next/image/?url=https%3A%2F%2Fphotos.flightaware.com%2F...	32.4 KiB	14.1 KiB
hero background `main.bg-p-50 > div.bg-p-800 > div.heap-desktop-skin-tracker > img.absolute`	/_next/image/?url=%2Fhomepage-assets%2Fimages%2Fherobg-3....	54.2 KiB	13.0 KiB
Boeing 747-400 (PH-BFG) `div.bg-neutral > div.carousel > div.carousel-item > img.min-h-full`	/_next/image/?url=https%3A%2F%2Fphotos.flightaware.com%2F...	26.2 KiB	12.5 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: hero background

path: 1,HTML,1,BODY,6,MAIN,2,DIV,0,DIV,0,IMG

selector: main.bg-p-50 > div.bg-p-800 > div.heap-desktop-skin-tracker > img.absolute

snippet: <img alt="hero background" loading="lazy" decoding="async" data-nimg="fill" class="absolute h-[calc(100vh-64px)] min-h-[300px] w-full select-none bg-cover ob…" sizes="100vw" srcset="/_next/image/?url=%2Fhomepage-assets%2Fimages%2Fherobg-1.avif&w=640&q=90 6…" src="https://www.flightaware.com/_next/image/?url=%2Fhomepage-assets%2Fimages%2…" style="position: absolute; height: 100%; width: 100%; inset: 0px;">

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.

URL	Transfer Size	Duration
www.flightaware.com/_next/static/css/99d9745e8c45f2ad.css	12.0 KiB	349 ms
www.flightaware.com/_next/static/css/4280a6b640dcf1cd.css	26.3 KiB	349 ms
www.flightaware.com/_next/static/css/d5df8d4c07ad6c8e.css	331 B	301 ms
www.flightaware.com/_next/static/css/4bbc281330f55a61.css	7.8 KiB	301 ms
www.flightaware.com/_next/static/css/1d589d89d609f5c2.css	2.1 KiB	301 ms
www.flightaware.com/_next/static/css/80f52c45e5d927e8.css	330 B	301 ms

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

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.

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: 257 ms

URL	Time Spent
flightaware.com/	257 ms
www.flightaware.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.

Element	Layout shift score
ABOUT About FlightAware Newsroom Advertise With Us Careers Webinars Blog Engine… `body > footer.footer`	0.810
ABOUT About FlightAware Newsroom Advertise With Us Careers Webinars Blog Engine… `body > footer.footer`	0.042
This website uses cookies to enhance user experience and to analyze performance… `body > div#onetrust-consent-sdk > div#onetrust-banner-sdk`	0.004
This website uses cookies to enhance user experience and to analyze performance… `body > div#onetrust-consent-sdk > div#onetrust-banner-sdk`	0.003
This website uses cookies to enhance user experience and to analyze performance… `body > div#onetrust-consent-sdk > div#onetrust-banner-sdk`	0.001
`div.input-md > form.group > div.overflow-hidden > span`	0.000
`div.input-md > form.group > div.overflow-hidden > span`	0.000
`div.input-md > form.group > div.overflow-hidden > span`	0.000
`div.input-md > form.group > div.overflow-hidden > span`	0.000
`div.input-md > form.group > div.overflow-hidden > span`	0.000

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

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 460 ms 790.3 KiB

URL	Transfer Size	Est Savings
www.flightaware.com/_next/static/chunks/9975e6ee-d53fe5a79c46e5bc.js	417.3 KiB	180.4 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...	187.7 KiB	141.2 KiB
js.hsforms.net/forms/v2.js	186.4 KiB	113.5 KiB
www.flightaware.com/_next/static/chunks/9567-4cf9772d9c13ebfd.js	147.3 KiB	92.9 KiB
www.flightaware.com/_next/static/chunks/891cff7f-0fb983e9fa346577.js	98.1 KiB	69.4 KiB
www.flightaware.com/_next/static/chunks/7051-bb2fd88de38528cb.js	66.7 KiB	41.0 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js	75.9 KiB	39.1 KiB
fundingchoicesmessages.google.com/i/pub-5050142875977827?ers=1	68.5 KiB	34.4 KiB
www.flightaware.com/_next/static/chunks/1629c846-45ccaf9b52e944cd.js	115.0 KiB	33.2 KiB
www.flightaware.com/_next/static/chunks/2846-11deeb3ecb14907c.js	32.7 KiB	24.4 KiB
cdn.heapanalytics.com/js/heap-2573639223.js	38.3 KiB	20.7 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.

URL	Total CPU Time	Script Evaluation	Script Parse
www.flightaware.com/_next/static/chunks/9975e6ee-d53fe5a79c46e5bc.js	5.8 s	4.0 s	62 ms
www.flightaware.com/_next/static/chunks/87c73c54-8f6887dee1c014ac.js	2.1 s	1.4 s	7.0 ms
www.flightaware.com/_next/static/chunks/9567-4cf9772d9c13ebfd.js	706 ms	24 ms	11 ms
www.flightaware.com/_next/static/chunks/9893-0b1f1a4dfaf83add.js	643 ms	600 ms	9.8 ms
Unattributable	600 ms	81 ms	0.0 ms
www.flightaware.com/	235 ms	12 ms	11 ms
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js	131 ms	102 ms	12 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...	72 ms	49 ms	14 ms
/_next/static/chunks/app/[locale]/layout-6004b2fd3be4dd89.js	64 ms	63 ms	0.2 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.

Category	Time Spent
Script Evaluation	6.5 s
Other	3.5 s
Script Parsing & Compilation	216 ms
Style & Layout	207 ms
Garbage Collection	169 ms
Rendering	66 ms
Parse HTML & CSS	31 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 reason	Failure 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

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 53.8 KiB

URL	Transfer Size	Est Savings
www.flightaware.com/_next/static/css/4280a6b640dcf1cd.css	26.0 KiB	22.5 KiB
	22.6 KiB	19.8 KiB
www.flightaware.com/_next/static/css/99d9745e8c45f2ad.css	11.7 KiB	11.5 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.

URL	Transfer Size
www.flightaware.com/_next/static/chunks/9975e6ee-d53fe5a79c46e5bc.js	417.7 KiB
gqlr.flightaware.com/v1/graphql	416.0 KiB
www.flightaware.com/homepage-assets/images/globaladbg.avif	210.9 KiB
/_next/image/?url=%2Fhomepage-assets%2Fimages%2Fforesight...	210.2 KiB
js.hsforms.net/forms/v2.js	193.8 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...	187.7 KiB
skyapi.ovc.flightaware.com/tiles/vector/flightaware.20260413/1/0/0.mvt	163.6 KiB
www.flightaware.com/_next/static/chunks/9567-4cf9772d9c13ebfd.js	148.2 KiB
skyapi.ovc.flightaware.com/tiles/vector/flightaware.20260413/1/1/0.mvt	137.1 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js	129.0 KiB

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

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 3 user timings

●Avoid long main-thread tasks 20 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 160 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 130 ms

○INP breakdown

○Avoid non-composited animations

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
ABOUT `div.grid > div.lg:flex > nav.first:mt-0 > h6.text-neutral`

These are opportunities to improve keyboard navigation in your application.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.pointer-events-auto > div.input-md > form.group > input.text-primary `div.pointer-events-auto > div.input-md > form.group > input.text-primary`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta `head > meta`

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
Privacy Statement `div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-imprint-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

●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

●Touch targets have sufficient size and spacing.

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○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.

○`[role]`s are contained by their required parent element

○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.

○Uses ARIA roles only on compatible elements

○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.

Best Practices

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.

Source	Description
www.flightaware.com/_next/static/chunks/9893-0b1f1a4dfaf83add.js	`Error: Minified React error #419; visit https://react.dev/errors/419 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.`
login.flightaware.com/api/v2/auth/session	`Failed to load resource: the server responded with a status of 401 ()`

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.flightaware.com/_next/static/chunks/9975e6ee-d53fe5a79c46e5bc.js
www.flightaware.com/_next/static/chunks/1629c846-45ccaf9b52e944cd.js

●Uses HTTPS

●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

●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 clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

○Redirects HTTP traffic to HTTPS

○Detected JavaScript libraries

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 destination	Link Text
cookiepedia.co.uk/giving-consent-to-cookies	More information

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

○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 are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`