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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.

38

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 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:41.202 source:map[column:26738 line:2 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_react-dom-vflxkx0XF.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:6.336 source:map[type:text value:[unattributed]]] map[reflowTime:41.202 source:map[column:296812 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflpSArJJ.js urlProvider:network]] map[reflowTime:1.107 source:map[column:755429 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflpSArJJ.js urlProvider:network]] map[reflowTime:5.455 source:map[column:765258 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflpSArJJ.js urlProvider:network]] map[reflowTime:11.554 source:map[column:773028 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflpSArJJ.js urlProvider:network]] map[reflowTime:37.779 source:map[column:774776 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflpSArJJ.js urlProvider:network]] map[reflowTime:0.589 source:map[column:163834 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]] map[reflowTime:0.056 source:map[column:141087 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]] map[reflowTime:0.218 source:map[column:169768 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]]]

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
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 SizeDuration
/static/metaserver/static/css/font_sharp_grotesk-vflwgPRU...12.4 KiB
/static/typescript/component_libraries/dwg-components/src...468 B
/static/typescript/component_libraries/dwg-components/src...706 B
/static/typescript/component_libraries/dwg-components/src...40.0 KiB300 ms
/static/typescript/component_libraries/dwg-components/src...771 B
/static/typescript/component_libraries/dwg-components/src...472 B
/static/typescript/component_libraries/dwg-components/src...658 B
/static/typescript/component_libraries/dwg-components/src...763 B
/static/typescript/component_libraries/dwg-components/src...1.1 KiB
/static/typescript/component_libraries/dwg-components/src...470 B
/static/typescript/component_libraries/dwg-components/src...382 B
/static/typescript/component_libraries/dwg-components/src...1.2 KiB
/static/typescript/component_libraries/dwg-components/src...522 B
/static/metaserver/static/css/dig-fonts/sharp_grotesk_23....838 B
/static/metaserver/static/css/dig-fonts/index.metaserver-...1.2 KiB
/static/metaserver/static/css/warp/skip_to_main_content-v...577 B
/static/typescript/component_libraries/dwg-components/src...555 B
/static/typescript/component_libraries/dwg-components/src...626 B
/static/typescript/component_libraries/dwg-components/src...1.4 KiB150 ms
/static/metaserver/static/css/dig-components/tokens-vflyw...11.7 KiB150 ms
cfl.dropboxstatic.com/static/metaserver/static/css/accessibility-vfliGZNRm.css369 B854 ms
/static/typescript/component_libraries/dwg-components/src...661 B
/static/typescript/component_libraries/dwg-components/src...621 B
/static/typescript/component_libraries/dwg-components/src...631 B
/static/typescript/component_libraries/dwg-components/src...578 B
/static/typescript/component_libraries/dwg-components/src...749 B
/static/typescript/component_libraries/dwg-components/src...220 B
/static/typescript/component_libraries/dwg-components/src...645 B
/static/typescript/component_libraries/dwg-components/src...1.5 KiB
/static/typescript/component_libraries/dwg-components/src...615 B
/static/typescript/component_libraries/dwg-components/src...297 B
/static/metaserver/static/js/warp/components/dwg/dwg_pdf_...352 B
/static/typescript/component_libraries/dwg-components/src...407 B
/static/typescript/component_libraries/dwg-components/src...277 B
/static/typescript/component_libraries/dwg-components/src...331 B
/static/typescript/component_libraries/dwg-components/src...727 B
/static/typescript/component_libraries/dwg-components/src...438 B
/static/typescript/component_libraries/dwg-components/src...659 B
/static/typescript/component_libraries/dwg-components/src...576 B
/static/typescript/component_libraries/dwg-components/src...1.4 KiB
/static/typescript/component_libraries/dwg-components/src...430 B
/static/typescript/component_libraries/dwg-components/src...1.4 KiB
/static/js/ungated-file-app/src/components/file-input/ind...241 B
/static/metaserver/static/js/alameda_bundle/alameda_bundl...21.7 KiB
cfl.dropboxstatic.com/static/metaserver/static/css/notify-vfl1v0oiv.css565 B
/static/metaserver/static/js/warp/components/common/warp_...557 B
/static/typescript/component_libraries/dwg-components/src...406 B
/static/typescript/component_libraries/dwg-components/src...423 B
/static/typescript/component_libraries/dwg-components/src...1.2 KiB
/static/metaserver/static/js/warp/components/dwg/dwg_mark...334 B
/static/metaserver/static/js/warp/context/warp_context.mo...340 B
/static/typescript/component_libraries/dwg-components/src...278 B
/static/metaserver/static/css/font_sharp_grotesk-vflRd2mZ...1.0 KiB
/static/metaserver/static/css/font_paper_atlas_grotesk-vf...736 B

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
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s5.3 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s1.7 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s1.3 MiB
/warp/conversion/dropbox/warp/en-us/index/desktop-mobile-...86400.0 s49.2 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Crunch....86400.0 s12.8 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Cirque....86400.0 s9.2 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Hydro.s...86400.0 s7.6 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/McLaren...86400.0 s4.1 KiB
/warp/conversion/dropbox/warp/en-us/index/october-2025-la...86400.0 s3.9 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Lincoln...86400.0 s2.3 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Zoom.sv...86400.0 s2.3 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Katz.sv...86400.0 s2.2 KiB
/warp/conversion/dropbox/warp/icons/reclaim-dbx-waffle-32...86400.0 s1.1 KiB
/warp/conversion/dropbox/warp/icons/dropbox-sign-logo.svg...86400.0 s1.0 KiB
/warp/conversion/dropbox/warp/icons/dash-logo-nav.svg?id=...86400.0 s1.0 KiB
/warp/conversion/dropbox/warp/icons/DocSend-logo-nav.svg?...86400.0 s1.0 KiB
/warp/conversion/dropbox/warp/icons/replay-logo-nav.svg?i...86400.0 s1012 B
/warp/conversion/dropbox/warp/icons/Dropbox-logo-nav.svg?...86400.0 s985 B
/warp/conversion/dropbox/warp/icons/arrow_right.svg?id=e5...86400.0 s871 B

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.

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 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: 150 ms 48.3 KiB
URLTransfer SizeEst Savings
/static/typescript/component_libraries/dwg-components/src...40.0 KiB36.1 KiB
/static/metaserver/static/css/font_sharp_grotesk-vflwgPRU...12.2 KiB12.2 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
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_war...3.4 s1.8 s292 ms
Unattributable3.1 s109 ms0.0 ms
www.dropbox.com/1.5 s124 ms41 ms
/static/metaserver/static/js/alameda_bundle/alameda_bundl...1.4 s1.3 s34 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fin...1.4 s1.1 s26 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_con...324 ms263 ms57 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...273 ms36 ms92 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_red...267 ms226 ms2.3 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_src...238 ms143 ms9.6 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_rea...210 ms181 ms19 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...197 ms187 ms8.9 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...166 ms146 ms17 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_cor...155 ms144 ms9.8 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_pri...136 ms112 ms9.9 ms
/en/ccpa_iframe?default_non_ccpa=true&gpc=false&hide_gdpr...135 ms38 ms13 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_lod...130 ms123 ms6.0 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_dig...130 ms4.4 ms11 ms
accounts.google.com/gsi/client119 ms82 ms33 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_api...72 ms57 ms13 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...68 ms51 ms6.9 ms
/static/metaserver/static/pithos/zoom_chat_client.bundle-...61 ms32 ms29 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_ux_...61 ms55 ms3.8 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 Evaluation7.3 s
Other4.5 s
Style & Layout1.8 s
Script Parsing & Compilation1.2 s
Rendering283 ms
Parse HTML & CSS276 ms
Garbage Collection271 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 CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 9.9 KiB
URLTransfer SizeEst Savings
/static/metaserver/static/css/dig-components/components-v...43.5 KiB3.9 KiB
/static/metaserver/static/css/font_sharp_grotesk-vflwgPRU...12.4 KiB3.0 KiB
/static/metaserver/static/css/dig-components/foundations-...30.5 KiB2.9 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: 0.0 ms 1.5 MiB
URLTransfer SizeEst Savings
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_war...521.5 KiB271.1 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_tri...109.9 KiB99.0 KiB
www.googletagmanager.com/gtag/js?id=DC-15932550118.4 KiB89.5 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_con...139.2 KiB86.9 KiB
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...186.1 KiB81.2 KiB
www.googletagmanager.com/gtag/js?id=G-90XEVYY8M4&cx=c&gtm=4e6460156.9 KiB72.2 KiB
accounts.google.com/gsi/client92.6 KiB69.2 KiB
www.googletagmanager.com/gtag/js?id=AW-982651595&cx=c&gtm=4e6460136.4 KiB58.9 KiB
www.googletagmanager.com/gtag/js?id=UA-279179-2&cx=c&gtm=4e6460115.3 KiB58.4 KiB
www.googletagmanager.com/gtag/destination?id=DC-10906599&cx=c&gtm=4e6460120.2 KiB56.9 KiB
/static/metaserver/static/pithos/zoom_chat_client.bundle-...74.5 KiB55.9 KiB
www.googletagmanager.com/gtag/js?id=AW-1000051215&cx=c&gtm=4e6460140.7 KiB53.4 KiB
www.googletagmanager.com/gtag/destination?id=DC-15932550&cx=c&gtm=4e6460118.4 KiB52.6 KiB
www.googletagmanager.com/gtag/js?id=AW-11087776657&cx=c&gtm=4e6460133.6 KiB50.8 KiB
www.googletagmanager.com/gtag/js?id=AW-753970383&cx=c&gtm=4e6460122.7 KiB49.4 KiB
www.knotch-cdn.com/ktag/v3.17.1/feedback.min.js63.0 KiB48.7 KiB
www.googletagmanager.com/gtag/js?id=AW-16725107574&l=dataLayer127.6 KiB48.2 KiB
connect.facebook.net/en_US/fbevents.js117.9 KiB41.1 KiB
/signals/config/329181751193634?v=2.9.291&r=stable&domain...132.5 KiB39.0 KiB
/dxjsmodule/12.45e656039b3fa23613e1.chunk.js?Q_CLIENTVERS...45.0 KiB31.6 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fin...82.1 KiB28.2 KiB
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...33.9 KiB25.2 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_cor...33.8 KiB24.7 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
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...5.3 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...1.7 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...1.3 MiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_war...521.8 KiB
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...186.4 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_con...139.5 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_tri...110.2 KiB
www.dropbox.com/102.3 KiB
accounts.google.com/gsi/client93.4 KiB
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fin...82.5 KiB

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Improve image delivery
●LCP breakdown
●LCP request discovery
●Modern HTTP
●Optimize viewport for mobile
●Minify JavaScript
●User Timing marks and measures 32 user timings
●Avoid long main-thread tasks 20 long tasks found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 140 ms
●Server Backend Latencies 660 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 260 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
○Avoid non-composited animations
91

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#warp-metadata > nav.dwg-nav > div.dwg-box > button.dwg-nav__hamburger-button div#warp-metadata > nav.dwg-nav > div.dwg-box > button.dwg-nav__hamburger-button

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.

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 > iframe#ccpa-iframe body > iframe#ccpa-iframe

These are opportunities to improve keyboard navigation in your application.

○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]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Image elements have `[alt]` attributes
●`[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
●`<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
●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"]`
●Uses ARIA roles only on compatible elements
●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
○`[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
○Form elements have associated labels
○Links are distinguishable without relying on color.
○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
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○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
Fledge
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fin... line 1, col 66125
AttributionReporting
snap.licdn.com/li.lms-analytics/insight.min.js

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
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_cor... line 1, col 60197
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token. Error
www.dropbox.com/
Not signed in with the identity provider.
●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
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Ensure proper origin isolation with COOP
○Mitigate clickjacking with XFO or CSP
92

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.dropbox.com/features/cloud-storageLearn more
www.dropbox.com/features/share/send-large-filesLearn more
www.dropbox.com/features/securityLearn more
www.dropbox.com/business/solutions/constructionLearn more
www.dropbox.com/business/solutions/mediaLearn more
www.dropbox.com/business/solutions/technologyLearn more
www.dropbox.com/business/solutions/professional-servicesLearn more
www.dropbox.com/business/solutions/manufacturingLearn more
www.dropbox.com/educationLearn more

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`

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