Lighthouse Mobile

· 0 checks — Mobile 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.

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.

URL	Est Savings
consent.trustarc.com/get?name=RobotoRegular.ttf	30 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:28.041 source:map[column:43840 line:2 type:source-location url:https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.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:17.989 source:map[column:20945 line:1 type:source-location url:https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.js urlProvider:network]] map[reflowTime:8.583 source:map[column:60019 line:1 type:source-location url:https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.js urlProvider:network]] map[reflowTime:0.782 source:map[column:35231 line:1 type:source-location url:https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.js urlProvider:network]] map[reflowTime:4.011 source:map[column:35320 line:1 type:source-location url:https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.js urlProvider:network]] map[reflowTime:12.709 source:map[type:text value:[unattributed]]] map[reflowTime:0.651 source:map[column:86058 line:18 type:source-location url:https://js.hs-analytics.net/analytics/1776359400000/46126064.js urlProvider:network]] map[reflowTime:1.676 source:map[column:5 line:16 type:source-location url:https://consent.trustarc.com/asset/notice.js/v/v1.7-1729 urlProvider:network]] map[reflowTime:22.171 source:map[column:2184 line:1 type:source-location url:https://46126064.fs1.hubspotusercontent-na1.net/hubfs/46126064/hub_generated/template_assets/1/185471142289/1775146299432/template_fwds_main.js urlProvider:network]] map[reflowTime:0.215 source:map[column:23511 line:0 type:source-location url:https://consent.trustarc.com/notice?domain=doubleverify.com&c=teconsent&js=nj&noticeType=bb&text=true&gtm=1&pcookie 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

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
doubleverify.com/hubfs/DV_Website_HomepageVideo_Full.mp4	1209600.0 s	14.3 MiB
doubleverify.com/_hcms/forms/v2.js	300.0 s	201.1 KiB
js.hs-analytics.net/analytics/1776359400000/46126064.js	300.0 s	42.3 KiB
js.hubspot.com/web-interactives-embed.js	600.0 s	28.3 KiB
js.hs-banner.com/v2/46126064/banner.js	300.0 s	20.7 KiB
/notice?domain=doubleverify.com&c=teconsent&js=nj&noticeT...	3600.0 s	12.8 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
/hs-fs/hubfs/assets/images/GIR 2025/GIR-Hub-1.webp?width=...	1209600.0 s	61.7 KiB
doubleverify.com/_hcms/googlefonts/Roboto/700.woff2	1209600.0 s	45.9 KiB
doubleverify.com/_hcms/googlefonts/Roboto/500.woff2	1209600.0 s	45.7 KiB
doubleverify.com/_hcms/googlefonts/Roboto/regular.woff2	1209600.0 s	44.4 KiB
doubleverify.com/_hcms/googlefonts/Roboto_Condensed/700.woff2	1209600.0 s	42.2 KiB
doubleverify.com/_hcms/googlefonts/Roboto_Condensed/500.woff2	1209600.0 s	41.7 KiB
doubleverify.com/hs/scriptloader/46126064.js	90.0 s	1.4 KiB
munchkin.marketo.net/munchkin.js	0.0 ms	1.2 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-dqa.png	1209600.0 s	10.4 KiB
/hs-fs/hubfs/assets/logos/badges/badge-tag-caf.png?width=...	1209600.0 s	10.2 KiB
/hs-fs/hubfs/assets/logos/badges/badge-tag-bsc.png?width=...	1209600.0 s	10.1 KiB
/hs-fs/hubfs/assets/logos/badges/badge-aicpa-soc.png?widt...	1209600.0 s	7.8 KiB
doubleverify.com/hubfs/assets/logos/logo-on-dark.svg	1209600.0 s	6.7 KiB
/hs-fs/hubfs/assets/logos/badges/badge-isoiec-msecb.png?w...	1209600.0 s	6.0 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-nortonlifelock.svg	1209600.0 s	4.9 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-vodafone.svg	1209600.0 s	4.8 KiB
doubleverify.com/hubfs/assets/logos/clients/Logos-Customers-IPG.svg	1209600.0 s	4.4 KiB
/collect?v=2&fmt=js&pid=7274186&time=1776359758862&li_ads...	0.0 ms	432 B
doubleverify.com/hubfs/assets/logos/clients/logo-uscellular.svg	1209600.0 s	3.7 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-macys.svg	1209600.0 s	3.6 KiB
doubleverify.com/hubfs/assets/logos/clients/procter-and-gamble.svg	1209600.0 s	3.6 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-horizonmedia.svg	1209600.0 s	3.5 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-fanduel.svg	1209600.0 s	3.0 KiB
doubleverify.com/hubfs/assets/logos/Products/DV_Website_Products_Rockerbox.svg	1209600.0 s	2.8 KiB
doubleverify.com/hubfs/assets/logos/Products/DV_Website_Products_Scibids.svg	1209600.0 s	2.8 KiB
doubleverify.com/hubfs/assets/logos/clients/Logos-Customers-WPP%20Media.svg	1209600.0 s	2.7 KiB
doubleverify.com/hubfs/assets/logos/Products/DV_Website_Products_AuthenticAd.svg	1209600.0 s	2.6 KiB
/hubfs/assets/logos/clients/Logos-Customers-HavasMediaNet...	1209600.0 s	2.4 KiB
doubleverify.com/hubfs/assets/logos/clients/general-motors.svg	1209600.0 s	2.3 KiB
doubleverify.com/hubfs/assets/logos/symbol-full-color.svg	1209600.0 s	2.2 KiB
doubleverify.com/hubfs/assets/logos/clients/logo-tiktok.svg	1209600.0 s	2.0 KiB
/hubfs/46126064/assets/icons/pink/iconlibrary-ai2.svg	1209600.0 s	1.8 KiB
doubleverify.com/hubfs/assets/logos/badges/badge-iab.svg	1209600.0 s	1.8 KiB
/hubfs/46126064/assets/icons/green/iconlibrary-chart-grow...	1209600.0 s	1.7 KiB
/hubfs/46126064/assets/icons/White/iconlibrary-_Social.svg	1209600.0 s	1.6 KiB
doubleverify.com/hubfs/assets/logos/clients/haleon.svg	1209600.0 s	1.5 KiB
/hubfs/assets/graphics/module-transitions/transition-slan...	1209600.0 s	1.5 KiB
/hubfs/assets/graphics/module-transitions/transition-slan...	1209600.0 s	1.5 KiB
/hubfs/assets/graphics/module-transitions/transition-slan...	1209600.0 s	1.5 KiB
/hubfs/46126064/assets/icons/White/iconlibrary-Brands-Age...	1209600.0 s	1.4 KiB
/hubfs/assets/graphics/module-transitions/transition-slan...	1209600.0 s	1.4 KiB
/hubfs/46126064/assets/icons/teal/iconlibrary-checkmark.svg	1209600.0 s	1.3 KiB
/hubfs/assets/graphics/module-transitions/transition-slan...	1209600.0 s	1.3 KiB
/hubfs/assets/graphics/module-transitions/transition-slan...	1209600.0 s	1.3 KiB
/hubfs/46126064/assets/icons/White/iconlibrary-_Marketpla...	1209600.0 s	1.0 KiB
/hubfs/46126064/assets/icons/White/iconlibrary-_Publisher...	1209600.0 s	989 B
/hubfs/hub_generated/template_assets/1/185471244043/17751...	1209600.0 s	0 B
/hubfs/hub_generated/template_assets/1/185471142289/17751...	1209600.0 s	0 B
/hubfs/hub_generated/template_assets/1/185469505447/17751...	1209600.0 s	0 B
/hubfs/hub_generated/template_assets/1/208780850583/17728...	1209600.0 s	0 B

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

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

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
doubleverify.com/	9.5 s	81 ms	7.7 ms
Unattributable	3.2 s	93 ms	0.0 ms
js.hs-analytics.net/analytics/1776359400000/46126064.js	991 ms	670 ms	18 ms
www.googletagmanager.com/gtag/js?id=AW-709822676	556 ms	494 ms	58 ms
acsbapp.com/apps/app/dist/js/app.js	541 ms	380 ms	97 ms
doubleverify.com/_hcms/forms/v2.js	521 ms	385 ms	77 ms
www.googletagmanager.com/gtag/js?id=G-N856K2BR7S	347 ms	230 ms	69 ms
static.userback.io/widget/v1.js	293 ms	196 ms	80 ms
snap.licdn.com/li.lms-analytics/insight.min.js	233 ms	177 ms	7.0 ms
/hubfs/46126064/hub_generated/template_assets/1/185471142...	212 ms	94 ms	0.0 ms
www.googletagmanager.com/gtag/js?id=G-N856K2BR7S&cx=c&gtm=4e64f0	209 ms	51 ms	99 ms
/notice?domain=doubleverify.com&c=teconsent&js=nj&noticeT...	179 ms	68 ms	5.1 ms
js.hubspot.com/web-interactives-embed.js	90 ms	66 ms	13 ms
js.hs-banner.com/v2/46126064/banner.js	86 ms	64 ms	22 ms
consent.trustarc.com/asset/notice.js/v/v1.7-1729	58 ms	36 ms	15 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
Other	8.3 s
Script Evaluation	3.2 s
Style & Layout	2.9 s
Rendering	1.8 s
Script Parsing & Compilation	586 ms
Garbage Collection	265 ms
Parse HTML & CSS	120 ms

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 544.1 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-N856K2BR7S&cx=c&gtm=4e64f0	177.2 KiB	114.6 KiB
acsbapp.com/apps/app/dist/js/app.js	216.6 KiB	114.1 KiB
static.userback.io/widget/v1.js	159.1 KiB	91.8 KiB
doubleverify.com/_hcms/forms/v2.js	193.5 KiB	77.6 KiB
www.googletagmanager.com/gtag/js?id=G-N856K2BR7S	177.2 KiB	70.0 KiB
www.googletagmanager.com/gtag/js?id=AW-709822676	144.3 KiB	53.1 KiB
consent.trustarc.com/asset/notice.js/v/v1.7-1729	36.0 KiB	22.9 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
doubleverify.com/hubfs/DV_Website_HomepageVideo_Full.mp4	14.3 MiB
acsbapp.com/apps/app/dist/js/app.js	221.7 KiB
doubleverify.com/_hcms/forms/v2.js	201.1 KiB
www.googletagmanager.com/gtag/js?id=G-N856K2BR7S&cx=c&gtm=4e64f0	177.3 KiB
www.googletagmanager.com/gtag/js?id=G-N856K2BR7S	177.2 KiB
static.userback.io/widget/v1.js	160.9 KiB
www.googletagmanager.com/gtag/js?id=AW-709822676	144.7 KiB
consent.trustarc.com/get?name=RobotoRegular.ttf	75.7 KiB
/hs-fs/hubfs/assets/images/GIR 2025/GIR-Hub-1.webp?width=...	61.7 KiB
doubleverify.com/_hcms/googlefonts/Roboto/700.woff2	45.9 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#hs_cos_wrapper_fwds_body-module-8 > div.transition > span.mobile > img `div#hs_cos_wrapper_fwds_body-module-8 > div.transition > span.mobile > img`	/hubfs/assets/graphics/module-transitions/transition-slan...
div#hs_cos_wrapper_fwds_body-module-11 > div.transition > span.mobile > img `div#hs_cos_wrapper_fwds_body-module-11 > div.transition > span.mobile > img`	/hubfs/assets/graphics/module-transitions/transition-slan...
div#hs_cos_wrapper_widget_1758311448270 > div.transition > span.mobile > img `div#hs_cos_wrapper_widget_1758311448270 > div.transition > span.mobile > img`	/hubfs/assets/graphics/module-transitions/transition-slan...
DV_Website_Products_AuthenticAd `div.column-card__content > div.column-card__content-top > span.h4 > img`	doubleverify.com/hubfs/assets/logos/Products/DV_Website_Products_AuthenticAd.svg
DV_Website_Products_Scibids `div.column-card__content > div.column-card__content-top > span.h4 > img`	doubleverify.com/hubfs/assets/logos/Products/DV_Website_Products_Scibids.svg
DV_Website_Products_Rockerbox `div.column-card__content > div.column-card__content-top > span.h4 > img`	doubleverify.com/hubfs/assets/logos/Products/DV_Website_Products_Rockerbox.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/Logos-Customers-WPP%20Media.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/logo-tiktok.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/logo-tiktok.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/logo-fanduel.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/logo-fanduel.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/logo-nortonlifelock.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`	doubleverify.com/hubfs/assets/logos/clients/logo-nortonlifelock.svg
symbol-full-color `div.site-footer__grid > div > div.site-footer__symbol > img`	doubleverify.com/hubfs/assets/logos/symbol-full-color.svg
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`
div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element `div.testimonial__top > div.testimonial__logo > picture.module__picture > img.module__picture-element`

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

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●User Timing marks and measures 10 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 2 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 100 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 10 ms

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

○LCP request discovery

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

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
form#hsForm_18be25f3-f682-4965-b600-007d029b2b63_9394 > div.hs_email > div.input > input#email-18be25f3-f682-4965-b600-007d029b2b63_9394 `form#hsForm_18be25f3-f682-4965-b600-007d029b2b63_9394 > div.hs_email > div.input > input#email-18be25f3-f682-4965-b600-007d029b2b63_9394`

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.

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
Learn More `div.column-card__content > div.column-card__content-bottom > div.column-card__cta > a.column-card__cta-link`
Learn More `div.column-card__content > div.column-card__content-bottom > div.column-card__cta > a.column-card__cta-link`
DV Media AdVantage Platform Product Fact Sheet `div.column-card__content > div.column-card__content-top > h3.h5 > a.column-card__title-link`
Learn More `div.column-card__content > div.column-card__content-bottom > div.column-card__cta > a.column-card__cta-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

●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

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

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Input buttons have discernible text.

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

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

●ARIA attributes are used as specified for the element's role

●`[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.

●`[lang]` attributes have a valid value

●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"]`

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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.

○`<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.

○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.

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 / Warning	Source
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.

Source	Description
consent.trustarc.com/	`Framing 'https://consent.trustarc.com/' violates the following report-only Content Security Policy directive: "default-src 'self'". The violation has been logged, but no further action has been taken. Note that 'frame-src' was not explicitly set, so 'default-src' is used as a fallback.`
consent.trustarc.com/	`Framing 'https://consent.trustarc.com/' violates the following report-only Content Security Policy directive: "default-src 'self'". The violation has been logged, but no further action has been taken. Note that 'frame-src' was not explicitly set, so 'default-src' is used as a fallback.`
doubleverify.com/	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
doubleverify.com/_hcms/forms/v2.js line 1, col 250952	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
doubleverify.com/_hcms/forms/v2.js line 1, col 250952	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
/notice?domain=doubleverify.com&c=teconsent&js=nj&noticeT...	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
acsbapp.com/apps/app/dist/js/app.js	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
about:srcdoc	`The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.`
doubleverify.com/	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
doubleverify.com/_hcms/forms/v2.js line 1, col 250952	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
doubleverify.com/_hcms/forms/v2.js line 1, col 250952	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
/notice?domain=doubleverify.com&c=teconsent&js=nj&noticeT...	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
acsbapp.com/apps/app/dist/js/app.js	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
about:srcdoc	`The Content-Security-Policy directive name ''unsafe-inline'' contains one or more invalid characters. Only ASCII alphanumeric characters or dashes '-' are allowed in directive names.`
doubleverify.com/	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
doubleverify.com/_hcms/forms/v2.js line 1, col 250952	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
doubleverify.com/_hcms/forms/v2.js line 1, col 250952	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
/notice?domain=doubleverify.com&c=teconsent&js=nj&noticeT...	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
js.hs-analytics.net/analytics/1776359400000/46126064.js line 18, col 83701	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
acsbapp.com/apps/app/dist/js/app.js	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`
about:srcdoc	`The value for the Content-Security-Policy directive 'script-src' contains one or more invalid characters. In a source expression, non-whitespace characters outside ASCII 0x21-0x7E must be Punycode-encoded, as described in RFC 3492 (https://tools.ietf.org/html/rfc3492), if part of the hostname and percent-encoded, as described in RFC 3986, section 2.1 (http://tools.ietf.org/html/rfc3986#section-2.1), if part of the path.`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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	Map URL
doubleverify.com/_hcms/forms/v2.js
static.userback.io/widget/v1.js	static.userback.io/widget/widget.min.js.map
doubleverify.com/hs/hsstatic/HubspotToolsMenu/static-1.640/js/index.js	static.hsappstatic.net/HubspotToolsMenu/static-1.640/js/index.js.map

●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

●Ensure CSP is effective against XSS attacks

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

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
staging.doubleverify.com/global-insights	Learn More
staging.doubleverify.com/global-insights	Learn More
doubleverify.com/products/advertisers	Learn more
doubleverify.com/products/marketplaces	Learn more
doubleverify.com/products/publishers	Learn more
doubleverify.com/channels/social-media	Learn more
doubleverify.com/channels/ctv	Learn more
doubleverify.com/channels/commerce-media	Learn more
/lp/report/omnichannel/optimize/2025-dv-global-insights-a...	Learn More
/lp/report/ctv/verify/dv-global-insights-trends-in-the-mo...	Learn More
/lp/product-fact-sheet/omnichannel/dvmap/dv-media-advanta...	Learn 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`