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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

33

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.

RequestCache TTLTransfer Size
d0a7e.airbnb.com/tags.js2691.0 s41.5 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.

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:88.788 source:map[type:text value:[unattributed]]] map[reflowTime:46.003 source:map[column:532 line:19 type:source-location url:https://a0.muscache.com/airbnb/static/packages/web/common/4fe2.71d27fc232.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:302.971 label:Time to first byte subpart:timeToFirstByte] map[duration:624.748 label:Resource load delay subpart:resourceLoadDelay] map[duration:30.241 label:Resource load duration subpart:resourceLoadDuration] map[duration:1553.953 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
path: 1,HTML,1,BODY,5,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,2,DIV,4,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,1,IMG
selector: div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
snippet: <img class="i11046vh atm_e2_1osqo2v atm_vy_1osqo2v atm_jp_sm7xtg atm_jr_xm9jbw atm_5j_…" aria-hidden="true" alt="" elementtiming="LCP-target" src="https://a0.muscache.com/im/pictures/c37b5346-cce9-4308-905e-ed07a85b19c4.j…" data-original-uri="https://a0.muscache.com/im/pictures/c37b5346-cce9-4308-905e-ed07a85b19c4.j…" width="100%" height="100%">

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

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
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/miso/Hosting-990473675108532797/original/b6c...60.2 KiB42.9 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/BnbProperty/BnbProperty-1608222251557147622/...55.3 KiB39.3 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/miso/Hosting-1163013470261477387/original/83...41.8 KiB31.2 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/BnbProperty/BnbProperty-1659437270493604377/...42.8 KiB30.4 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/hosting/Hosting-1589161619774165654/original...31.4 KiB23.3 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/BnbProperty/BnbProperty-1608222286903470928/...32.5 KiB23.1 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/hosting/Hosting-1440734889306151844/original...36.4 KiB22.9 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/hosting/Hosting-1351361865994222554/original...35.9 KiB22.6 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/BnbProperty/BnbProperty-1608222255551541731/...29.0 KiB20.6 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/hosting/Hosting-1514104378943149230/original...25.9 KiB19.3 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/miso/Hosting-1464682836892935203/original/af...25.7 KiB19.1 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/miso/Hosting-52568642/original/994b51b3-987e...37.0 KiB17.5 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
a0.muscache.com/im/pictures/71fb9411-d18b-4824-a4ed-2af24a994ac1.jpg?im_w=72026.5 KiB16.7 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/hosting/Hosting-U3RheVN1cHBseUxpc3Rpbmc6MjUx...35.2 KiB16.6 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
a0.muscache.com/im/pictures/c37b5346-cce9-4308-905e-ed07a85b19c4.jpg?im_w=72021.5 KiB13.5 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/hosting/Hosting-1599923777720919940/original...18.6 KiB13.2 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/miso/Hosting-1404401476894336188/original/e2...20.7 KiB13.0 KiB
div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh div.cw9aemg > div.i1y91qbp > picture.p1lr305w > img.i11046vh
/im/pictures/miso/Hosting-35899511/original/519a5e7c-7816...20.6 KiB13.0 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: 1.3 s
URLTime Spent
airbnb.fr/1.3 s
www.airbnb.fr/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

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 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: 910 ms 298.1 KiB
URLTransfer SizeEst Savings
/airbnb/static/packages/web/common/frontend/core-guest-lo...313.2 KiB298.1 KiB

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.

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
a0.muscache.com/airbnb/static/packages/web/common/2ce9.aee8e73ff5.js2.1 s1.7 s20 ms
www.airbnb.fr/2.0 s390 ms7.7 ms
Unattributable1.7 s171 ms0.0 ms
a0.muscache.com/airbnb/static/packages/web/fr/e77e.f8ee2c81a0.js1.5 s1.1 s12 ms
a0.muscache.com/airbnb/static/packages/web/fr/bf69.798ec593ca.js1.0 s269 ms28 ms
www.googletagmanager.com/gtm.js?id=GTM-46MK934 ms825 ms99 ms
a0.muscache.com/airbnb/static/packages/web/common/4f8d.f846dfa32e.js895 ms119 ms26 ms
a0.muscache.com/airbnb/static/packages/web/common/c3cb.0b3de42380.js618 ms549 ms48 ms
/airbnb/static/packages/web/fr/frontend/core-guest-loop/a...601 ms540 ms57 ms
d0a7e.airbnb.com/tags.js545 ms426 ms28 ms
/airbnb/static/packages/web/common/frontend/core-guest-lo...495 ms463 ms2.7 ms
www.googletagmanager.com/gtag/js?id=G-2P6Q8PGG16&cx=c&gtm=4e64e1479 ms393 ms83 ms
a0.muscache.com/airbnb/static/packages/web/common/4fe2.71d27fc232.js437 ms77 ms14 ms
/airbnb/static/packages/web/fr/frontend/search-input-sect...345 ms297 ms5.2 ms
/airbnb/static/packages/web/common/frontend/core-guest-lo...323 ms0.0 ms0.0 ms
a0.muscache.com/airbnb/static/packages/web/common/daec.ee5054c430.js266 ms235 ms28 ms
a0.muscache.com/airbnb/static/packages/web/fr/b2b5.cb9296d9a0.js218 ms195 ms20 ms
a0.muscache.com/airbnb/static/packages/web/common/d669.944cb64345.js187 ms176 ms10 ms
a0.muscache.com/airbnb/static/packages/web/common/564e.b2b34a82a2.js186 ms156 ms28 ms
a0.muscache.com/airbnb/static/packages/web/common/c0d7.c6f9830252.js158 ms62 ms6.8 ms
/airbnb/static/packages/web/common/frontend/homepage/rout...158 ms155 ms2.5 ms
a0.muscache.com/airbnb/static/packages/web/common/a578.ff974a5778.js133 ms85 ms6.9 ms
/airbnb/static/packages/web/common/frontend/hyperloop-bro...121 ms89 ms16 ms
a0.muscache.com/airbnb/static/packages/web/fr/6497.fc75b115a6.js111 ms92 ms18 ms
/airbnb/static/packages/web/fr/frontend/airmetro/browser/...103 ms32 ms70 ms
a0.muscache.com/airbnb/static/packages/web/common/aef3.067354d9fb.js95 ms51 ms9.9 ms
a0.muscache.com/airbnb/static/packages/web/fr/3d60.48fbb44b00.js86 ms77 ms7.2 ms
a0.muscache.com/airbnb/static/packages/web/common/bdb3.a28ac9f611.js71 ms35 ms35 ms
/airbnb/static/packages/web/fr/frontend/niobe/client/Niob...68 ms58 ms9.5 ms
a0.muscache.com/airbnb/static/packages/web/fr/c7a9.b177cbd30e.js68 ms57 ms9.8 ms
a0.muscache.com/airbnb/static/packages/web/common/a6e1.9439b69ac3.js66 ms32 ms22 ms
/airbnb/static/packages/web/common/frontend/core-guest-lo...59 ms54 ms4.8 ms
a0.muscache.com/airbnb/static/packages/web/fr/f2a5.3cd0feaee7.js55 ms45 ms7.8 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 Evaluation10.2 s
Other3.7 s
Style & Layout1.6 s
Script Parsing & Compilation1.2 s
Parse HTML & CSS568 ms
Rendering426 ms
Garbage Collection204 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

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

Layout shift culprits
Optimize DOM size
Font display
LCP request discovery
Modern HTTP
Render blocking requests
Optimize viewport for mobile
Minify CSS
Minify JavaScript
User Timing marks and measures 10 user timings
Avoid long main-thread tasks 20 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 170 ms
Server Backend Latencies 150 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 20 ms
Avoid large layout shifts 4 layout shifts found
INP breakdown
Avoid non-composited animations
100

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.

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
Commencer ma recherche Filtres appliqués : Dates flexibles. Modifier la recherc… div.c1yo0219 > div > div.c1tqtfcq > button.l1ovpqvx
Français (FR) div.lnah8cm > div.c1q8ecwv > span.bacnnrh > button.l1ovpqvx
€ EUR div.lnah8cm > div.c1q8ecwv > span.bacnnrh > button.l1ovpqvx
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
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
`[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.
Heading elements appear in a sequentially-descending order
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
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.
Image elements have `[alt]` attributes
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
Form elements have associated labels
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.
`[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.
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.
100

Best Practices

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 browser errors logged to the console
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
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
Document has a valid `hreflang`
Document has a valid `rel=canonical`
Image elements have `[alt]` attributes

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