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

Audit breakdown by category with detailed findings.

82

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.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.199912] map[node:map[boundingRect:map[bottom:875 height:228 left:340 right:1010 top:647 width:670] lhId:page-1-DIV nodeLabel:We work hard to get you real results from advertising. Advertisers, agencies, … path:1,HTML,1,BODY,2,MAIN,0,SECTION,1,SECTION,1,DIV selector:main.ng-scope > section.page > section.hero > div.center-column snippet:<div class="center-column hero__copy"> type:node] score:0.199861] map[node:map[boundingRect:map[bottom:128 height:64 left:444 right:562 top:64 width:118] lhId:page-4-A nodeLabel:How we prevent it path:1,HTML,1,BODY,2,MAIN,0,SECTION,0,DIV,0,DIV,4,NAV,0,UL,2,LI,0,A selector:nav.h-c-header__nav > ul.h-c-header__nav-list > li.h-c-header__nav-li > a.h-c-header__nav-li-link snippet:<a href="../../ads/adtrafficquality/how-we-prevent-it/" class="h-c-header__nav-li-link" role="menuitem" data-cached-tabindex="auto"> type:node] score:5.1e-05 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/googlesans/v67/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPjIUvbQoi-E.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]]] type:subitems]]]

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.

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
/s/googlesans/v67/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iq...95 ms
/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3iUBHMdazT...95 ms
fonts.gstatic.com/s/productsans/v20/pxiDypQkot1TnFhsFMOfGShVF9eOYktMqg.woff285 ms
fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff285 ms

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
www.gstatic.com/glue/cookienotificationbar/cookienotificationbar.min.js27.3 KiB218 ms
www.gstatic.com/external_hosted/createjs/createjs-2015.11.26.min.js49.0 KiB145 ms
www.gstatic.com/glue/cookienotificationbar/cookienotificationbar.min.css2.0 KiB323 ms
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular-touch.min.js1.9 KiB
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular-animate.min.js9.2 KiB73 ms
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular.min.js58.5 KiB506 ms
/css?family=Roboto:100,300,400,500,700|Google+Sans:400,50...3.4 KiB321 ms
www.google.com/ads/adtrafficquality/static/js/canvas/canvas.min.js?cache=bbbc0e5177.7 KiB
www.google.com/ads/adtrafficquality/static/js/index.min.js?cache=66ce1c136.7 KiB286 ms
www.google.com/ads/adtrafficquality/static/js/detect.min.js?cache=4cb778b10.7 KiB205 ms
www.google.com/ads/adtrafficquality/static/css/index.min.css?cache=389b66316.5 KiB123 ms

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

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 120 ms 315.7 KiB
URLTransfer SizeEst Savings
www.google.com/ads/adtrafficquality/static/js/canvas/canvas.min.js?cache=bbbc0e5177.7 KiB101.5 KiB
www.googletagmanager.com/gtag/js?id=G-Q51ER5S29V&cx=c&gtm=4e64f0144.6 KiB62.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-M98JXGB131.0 KiB59.1 KiB
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular.min.js57.9 KiB37.3 KiB
www.gstatic.com/external_hosted/createjs/createjs-2015.11.26.min.js48.5 KiB33.4 KiB
www.google.com/ads/adtrafficquality/static/js/index.min.js?cache=66ce1c136.7 KiB22.5 KiB

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 14.6 KiB
URLTransfer SizeEst Savings
www.google.com/ads/adtrafficquality/static/css/index.min.css?cache=389b66316.5 KiB14.6 KiB

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

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: 504 ms
URLTime Spent
adtrafficquality.google/262 ms
www.google.com/ads/adtrafficquality242 ms
www.google.com/ads/adtrafficquality/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
We work hard to get you real results from advertising. Advertisers, agencies, … main.ng-scope > section.page > section.hero > div.center-column
0.200
How we prevent it nav.h-c-header__nav > ul.h-c-header__nav-list > li.h-c-header__nav-li > a.h-c-header__nav-li-link
0.000
●Time to Interactive 2.0 s
●Use efficient cache lifetimes
●Optimize DOM size
●Forced reflow
●Improve image delivery
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 50 ms
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 792 KiB
●User Timing marks and measures 7 user timings
●JavaScript execution time 0.5 s
●Minimizes main-thread work 1.0 s
●Avoid long main-thread tasks 1 long task found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 60 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
○INP breakdown
○LCP request discovery
○Avoid non-composited animations
94

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
Overview div.h-c-header__bar > nav.h-c-header__nav > ul.h-c-header__nav-list > li.h-c-header__nav-li
Invalid activity div.h-c-header__bar > nav.h-c-header__nav > ul.h-c-header__nav-list > li.h-c-header__nav-li
How we prevent it div.h-c-header__bar > nav.h-c-header__nav > ul.h-c-header__nav-list > li.h-c-header__nav-li
What you can do div.h-c-header__bar > nav.h-c-header__nav > ul.h-c-header__nav-list > li.h-c-header__nav-li

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.

Navigation

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
We work hard to get you real results from advertising. section.page > section.hero > div.center-column > h4.hero_description_heading

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-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.
●Select elements have associated label elements.
●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.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[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
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
96

Best Practices

General

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.

URLMap URL
www.google.com/ads/adtrafficquality/static/js/canvas/canvas.min.js?cache=bbbc0e5
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular.min.jsajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular.min.js.map
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular-touch.min.jsajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular-touch.min.js.map
ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular-animate.min.jsajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular-animate.min.js.map
●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
●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
○Redirects HTTP traffic to HTTPS
73

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

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
policies.google.com/technologies/cookies?hl=enLearn more
www.google.com/ads/adtrafficquality/invalid-activity/LEARN MORE
www.google.com/ads/adtrafficquality/how-we-prevent-it/LEARN MORE
www.google.com/ads/adtrafficquality/what-you-can-do/LEARN MORE

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Cookies management controls section.h-c-footer__global > ul.h-c-footer__global-links > li.h-c-footer__global-links-list-item > a.h-c-footer__link

To appear in search results, crawlers need access to your app.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Page has successful HTTP status code
●robots.txt is valid
●Document has a valid `hreflang`
○Image elements have `[alt]` attributes
○Document has a valid `rel=canonical`

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