Skip to content
https://alltrails.com

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

29

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
cdn-assets.alltrails.com/assets/videos/homepage-app-feature/navigator.mp40.0 ms750.0 KiB
cdn-assets.alltrails.com/assets/videos/homepage-app-feature/offline.mp40.0 ms176.7 KiB
cdn-assets.alltrails.com/assets/videos/homepage-app-feature/byot.mp40.0 ms139.7 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js14400.0 s52.0 KiB
js.appboycdn.com/web-sdk/3.0/appboy.min.js14400.0 s49.2 KiB
datadome.alltrails.com/tags.js3600.0 s40.7 KiB
cdn.sprig.com/shim.js?id=slnFv1rd2aaf0.0 ms29.5 KiB
www.redditstatic.com/ads/pixel.js60.0 s19.0 KiB
utt.impactcdn.com/A4982930-7474-4bfe-bfd8-5845750e04b31.js900.0 s20.6 KiB
websdk.appsflyersdk.com/?st=pba&0.0 ms15.8 KiB
static.captcha-delivery.com/common/fonts/roboto/roboto.woff20.0 ms15.8 KiB
/captcha/assets/set/70be94963ffd469e3ad12ebf1ffb3d8354cb8...0.0 ms7.9 KiB
/captcha/assets/set/70be94963ffd469e3ad12ebf1ffb3d8354cb8...0.0 ms7.9 KiB
bat.bing.com/p/insights/s/0.8.5986400.0 s15.6 KiB
ct.pinterest.com/static/ct/token_create.js7200.0 s3.9 KiB
s.pinimg.com/ct/lib/main.10d2511a.js1209600.0 s27.4 KiB
/captcha/assets/tpl/6dc485c0c428c35b53577b146dc6f9179f55e...0.0 ms1.8 KiB
s.pinimg.com/ct/core.js7200.0 s2.1 KiB
fast.ssqt.io/squatch-js@2604800.0 s14.0 KiB
static.captcha-delivery.com/captcha/assets/tpl/device-check/index.css0.0 ms1.4 KiB
/st?ga_tracking_id=G-V6WJN779TY&ga_client_id=1835991664.1...0.0 ms1.2 KiB
static.captcha-delivery.com/common/fonts/roboto/font-face.css0.0 ms897 B
use.fontawesome.com/7f85a56ba4.css1800.0 s869 B
/rp.gif?ts=1776804078403&id=a2_gst9ciit1g07&event=PageVis...0.0 ms666 B
/st?ga_tracking_id=G-V6WJN779TY&ga_client_id=1835991664.1...0.0 ms582 B
static.captcha-delivery.com/common/fonts/roboto/roboto.woff20.0 ms0 B
static.captcha-delivery.com/common/fonts/roboto/font-face.css0.0 ms0 B

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:12.819 source:map[column:190283 line:1 type:source-location url:https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/6337-5805f447cbad85bb.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:84.964 source:map[type:text value:[unattributed]]] map[reflowTime:0.546 source:map[column:55 line:857 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-V6WJN779TY urlProvider:network]] map[reflowTime:0.674 source:map[column:83788 line:0 type:source-location url:https://www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js urlProvider:network]] map[reflowTime:2.632 source:map[column:176474 line:0 type:source-location url:https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/3305-c321d514955700a0.js urlProvider:network]] map[reflowTime:1.418 source:map[column:77099 line:0 type:source-location url:https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/3305-c321d514955700a0.js urlProvider:network]] map[reflowTime:1.36 source:map[column:84140 line:0 type:source-location url:https://www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js urlProvider:network]] map[reflowTime:3.354 source:map[column:106136 line:0 type:source-location url:https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/3305-c321d514955700a0.js urlProvider:network]] map[reflowTime:1.168 source:map[column:9076 line:3 type:source-location url:https://websdk.appsflyersdk.com/?st=pba& urlProvider:network]] map[reflowTime:0.749 source:map[column:88141 line:1 type:source-location url:https://datadome.alltrails.com/tags.js urlProvider:network]] map[reflowTime:0.417 source:map[column:88567 line:1 type:source-location url:https://datadome.alltrails.com/tags.js urlProvider:network]] map[reflowTime:2.759 source:map[column:3635 line:0 type:source-location url:https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/app/%5Blocale%5D/page-2651b129ba65efd7.js urlProvider:network]] map[reflowTime:0.501 source:map[column:22094 line:0 type:source-location url:https://www.redditstatic.com/ads/pixel.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
A hiker seen from behind, walking on a trail surrounded by pine trees. main#main-content > section > div.styles_container__oZ6rY > img.styles_image__6hTE6
/mugen/image/root?url=https%3A%2F%2Fd27scpai1jcyi9.cloudf...70.4 KiB50.6 KiB
/captcha/assets/set/70be94963ffd469e3ad12ebf1ffb3d8354cb8...7.6 KiB6.4 KiB
/captcha/assets/set/70be94963ffd469e3ad12ebf1ffb3d8354cb8...7.6 KiB4.2 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/cs...14.4 KiB478 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/cs...3.3 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/cs...6.5 KiB159 ms

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
static.captcha-delivery.com/common/fonts/roboto/roboto.woff25.0 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 814 ms
URLTime Spent
alltrails.com/814 ms
www.alltrails.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

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: 0.0 ms 21.3 KiB
URLTransfer SizeEst Savings
.ab-pause-scrolling,body.ab-pause-scrolling,html.ab-pause-scrolling{overflow:hidden; … } …10.9 KiB10.9 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/cs...14.0 KiB10.4 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.

Estimated savings: 770 ms 551.4 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtm.js?id=GTM-W6N3M9124.6 KiB72.2 KiB
accounts.google.com/gsi/client95.5 KiB68.4 KiB
www.googletagmanager.com/gtag/js?id=G-V6WJN779TY169.6 KiB67.8 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js108.9 KiB59.4 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB46.6 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...64.5 KiB36.4 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...70.3 KiB31.7 KiB
www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js51.6 KiB28.4 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...91.9 KiB26.9 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...38.3 KiB26.5 KiB
js.appboycdn.com/web-sdk/3.0/appboy.min.js48.9 KiB23.6 KiB
/AzZqakTb9cVIa3Ok9/ca957679-3953-4131-9f80-8e7ef8f97a4f/o...73.2 KiB21.7 KiB
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...41.4 KiB21.1 KiB
cdn.sprig.com/shim.js?id=slnFv1rd2aaf29.0 KiB20.6 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
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...6.1 s5.0 s40 ms
www.alltrails.com/2.6 s25 ms67 ms
Unattributable1.3 s173 ms0.0 ms
/AzZqakTb9cVIa3Ok9/ca957679-3953-4131-9f80-8e7ef8f97a4f/o...972 ms872 ms29 ms
cdn.amplitude.com/libs/analytics-browser-2.9.3-min.js.gz602 ms508 ms8.2 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...545 ms511 ms0.5 ms
www.googletagmanager.com/gtag/js?id=G-V6WJN779TY483 ms369 ms107 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js344 ms274 ms65 ms
www.redditstatic.com/ads/pixel.js300 ms252 ms7.0 ms
www.googletagmanager.com/gtm.js?id=GTM-W6N3M9195 ms150 ms41 ms
utt.impactcdn.com/A4982930-7474-4bfe-bfd8-5845750e04b31.js194 ms162 ms24 ms
www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js192 ms55 ms23 ms
/spx?dxver=4.0.0&shaid=38321&tdr=&plh=https%3A%2F%2Fwww.a...190 ms181 ms2.6 ms
connect.facebook.net/en_US/fbevents.js166 ms132 ms34 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...150 ms127 ms22 ms
bat.bing.com/p/insights/s/0.8.59147 ms135 ms4.1 ms
datadome.alltrails.com/tags.js145 ms129 ms10 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...133 ms119 ms13 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...126 ms108 ms17 ms
s.pinimg.com/ct/lib/main.10d2511a.js119 ms100 ms12 ms
websdk.appsflyersdk.com/?st=pba&115 ms99 ms6.3 ms
cdn.sprig.com/shim.js?id=slnFv1rd2aaf80 ms60 ms15 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...79 ms78 ms0.9 ms
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...63 ms61 ms1.6 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js62 ms36 ms25 ms
accounts.google.com/gsi/client62 ms27 ms35 ms
js.appboycdn.com/web-sdk/3.0/appboy.min.js59 ms30 ms28 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 Evaluation10.1 s
Other2.8 s
Style & Layout1.3 s
Script Parsing & Compilation734 ms
Rendering658 ms
Garbage Collection306 ms
Parse HTML & CSS156 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

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
cdn-assets.alltrails.com/assets/videos/homepage-app-feature/navigator.mp4750.0 KiB
/interstitial/?initialCid=AHrlqAAAAAMAgauHvDkbQNMAXCaVCw=...220.5 KiB
cdn-assets.alltrails.com/assets/videos/homepage-app-feature/offline.mp4176.7 KiB
www.googletagmanager.com/gtag/js?id=G-V6WJN779TY169.9 KiB
cdn-assets.alltrails.com/assets/videos/homepage-app-feature/byot.mp4139.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-W6N3M9124.7 KiB
/mugen/image/root?url=https%3A%2F%2Fi0.wp.com%2Falltrails...116.5 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js109.6 KiB
connect.facebook.net/en_US/fbevents.js96.6 KiB
accounts.google.com/gsi/client96.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
div.AppInstallSectionStacked_row__78swu > div.AppInstallSectionStacked_phoneOuterContainer__8VL03 > div.AppInstallSectionStacked_phoneContainer__aX_be > img.AppInstallSectionStacked_phoneImg__bVcNR div.AppInstallSectionStacked_row__78swu > div.AppInstallSectionStacked_phoneOuterContainer__8VL03 > div.AppInstallSectionStacked_phoneContainer__aX_be > img.AppInstallSectionStacked_phoneImg__bVcNR
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/me...
div.AppInstallSectionStacked_row__78swu > div.AppInstallSectionStacked_phoneOuterContainer__8VL03 > div.AppInstallSectionStacked_phoneContainer__aX_be > img.AppInstallSectionStacked_phoneImg__bVcNR div.AppInstallSectionStacked_row__78swu > div.AppInstallSectionStacked_phoneOuterContainer__8VL03 > div.AppInstallSectionStacked_phoneContainer__aX_be > img.AppInstallSectionStacked_phoneImg__bVcNR
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/me...
div.AppInstallSectionStacked_row__78swu > div.AppInstallSectionStacked_phoneOuterContainer__8VL03 > div.AppInstallSectionStacked_phoneContainer__aX_be > img.AppInstallSectionStacked_phoneImg__bVcNR div.AppInstallSectionStacked_row__78swu > div.AppInstallSectionStacked_phoneOuterContainer__8VL03 > div.AppInstallSectionStacked_phoneContainer__aX_be > img.AppInstallSectionStacked_phoneImg__bVcNR
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/me...

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●LCP request discovery
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 17 animated elements found
●Network Requests
●Network Round Trip Times 190 ms
●Server Backend Latencies 140 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 130 ms
●Avoid large layout shifts 3 layout shifts found
○INP breakdown
95

Accessibility

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

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.styles_container__MDy_J > div.FullscreenSearchBox_container__bndNh > div.styles_container__Yg5H9 > input.styles_input__ZiQpI div.styles_container__MDy_J > div.FullscreenSearchBox_container__bndNh > div.styles_container__Yg5H9 > input.styles_input__ZiQpI

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

○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-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●Select elements have associated label elements.
●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
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●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
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
○`[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
○`<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
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○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
○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.
○Elements with visible text labels have matching accessible names.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...

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
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...
Failed to fetch trails from explore-service s at s.initialize (https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/3396-79c844b268adae51.js:1:4059) at async d (https://d27scpai1jcyi9.cloudfront.net/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/chunks/3396-79c844b268adae51.js:1:4868) at async Promise.all (index 0)
www.alltrails.com/api/alltrails/explore/v1/search
Failed to load resource: the server responded with a status of 403 ()
www.alltrails.com/
Not signed in with the identity provider.
/613aa2a92c8b3f4226563689dada553a81b2bf6c/_next/static/ch...
Uncaught 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.
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate 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`

Send Feedback