Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.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.
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
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.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
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.
Performance issues directly impact user engagement and conversion rates.
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
Hachette Speakers Bureau div.post__content > figure.wp-block-image > a > img.wp-image-2141282 | /wp-content/uploads/2017/06/Hachette-Speakers-Bureau2025.... | 427.5 KiB | 344.9 KiB |
The Iliad div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | www.hachettebookgroup.com/wp-content/uploads/2025/11/9781454964735.jpg | 187.0 KiB | 185.9 KiB |
article > div.post__content > div.wp-block-cover > img.wp-block-cover__image-background article > div.post__content > div.wp-block-cover > img.wp-block-cover__image-background | /wp-content/uploads/2017/06/Web-Banner-8.png?resize=1536,576 | 220.1 KiB | 108.9 KiB |
li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait | /wp-content/uploads/2017/08/mosleybadboyauth.jpg?w=500&h=... | 30.8 KiB | 24.1 KiB |
li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait | /wp-content/uploads/2024/07/84508302.jpg?w=500&h=700&crop=1 | 23.9 KiB | 18.7 KiB |
li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait | /wp-content/uploads/2017/09/Michael-Connelly_PhotoKatWest... | 21.2 KiB | 16.6 KiB |
li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait li.our-authors__item > figure.our-authors__figure > a.our-authors__image-wrapper > img.orientation-portrait | /wp-content/uploads/2024/07/129457454_0ed590.jpg?w=500&h=... | 16.4 KiB | 12.8 KiB |
div.wp-block-hachette-plugin-promotion > div.block-promotion__media > figure.wp-block-hachette-plugin-title-image > img.attachment-book-title-small div.wp-block-hachette-plugin-promotion > div.block-promotion__media > figure.wp-block-hachette-plugin-title-image > img.attachment-book-title-small | www.hachettebookgroup.com/wp-content/uploads/2026/02/9780316537773.jpg?w=190 | 13.2 KiB | 6.6 KiB |
Healthy with a Side of Happy div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2026/02/9781454956587.jpg?resize=161,200 | 10.3 KiB | 5.1 KiB |
The Ogress and the Orphans div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2025/12/9781643750743.jpg?resize=133,200 | 9.3 KiB | 5.0 KiB |
Eco Revolution div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2025/08/9781538770443_16b1fa.jpg?resi... | 9.0 KiB | 4.7 KiB |
Nightbloom div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2025/12/9781643752846.jpg?resize=132,200 | 8.8 KiB | 4.5 KiB |
Elephant & Piggie: Let’s Sticker! div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2025/11/9781454999584.jpg?resize=156,200 | 9.4 KiB | 4.3 KiB |
The Café of Infinite Doors div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2026/01/9781454961277.jpg?resize=133,200 | 8.6 KiB | 4.3 KiB |
Mighty Models: The Legendary Life Story of the Cogwheel div.carousel__item > a > figure.carousel__book-cover > img.orientation-landscape | /wp-content/uploads/2025/11/9781454961666.jpg?resize=200,170 | 9.7 KiB | 4.2 KiB |
City of Iron and Ivy div.carousel__item > a > figure.carousel__book-cover > img.orientation-portrait | /wp-content/uploads/2025/10/9781538776162_985597.jpg?resi... | 8.4 KiB | 4.1 KiB |
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| /signals/config/157411788180383?v=2.9.303&r=stable&domain... | 1200.0 s | 126.4 KiB |
| connect.facebook.net/en_US/fbevents.js | 1200.0 s | 96.6 KiB |
| connect.facebook.net/en_US/bundle/sdk.js/ | 1200.0 s | 77.8 KiB |
| sdks.shopifycdn.com/buy-button/latest/buy-button-storefront.min.js?ver=1.0 | 0.0 ms | 60.3 KiB |
| www.redditstatic.com/ads/pixel.js | 60.0 s | 19.0 KiB |
| www.google-analytics.com/analytics.js | 7200.0 s | 20.9 KiB |
| c.amazon-adsystem.com/aat/amzn.js | 0.0 ms | 8.9 KiB |
| connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.9 | 1200.0 s | 5.0 KiB |
| static.klaviyo.com/onsite/js/SNS8eT/klaviyo.js | 1.0 s | 2.7 KiB |
| /rp.gif?ts=1776817896688&id=t2_bq2b558q&event=PageVisit&m... | 0.0 ms | 666 B |
| /config/com/6070a363-b33a-4a74-af98-1855c5d375bb.js?v=3.5... | 0.0 ms | 470 B |
| /tr/?id=157411788180383&ev=PageView&dl=https%3A%2F%2Fwww.... | 0.0 ms | 19 B |
| /p.css?s=1&k=dwh4ner&ht=tk&f=9785.9787.26062.26064&a=1532... | 604800.0 s | 172 B |
| /p.css?s=1&k=vbp3ppc&ht=tk&f=47081.47083.47089.47090&a=35... | 604800.0 s | 172 B |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| hachettebookgroup.com/ | 378 ms |
| www.hachettebookgroup.com/ | 0.0 ms |
Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| www.hachettebookgroup.com/ | 736 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.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| .shopping-cart-interior{/*! * Bootstrap v5.1.3 (https://getbootstrap.com/) * Copyright 2011-2021 T… } … | 45.2 KiB | 45.2 KiB |
| /wp-content/themes/hachette-book-group-2023/client/build/... | 27.5 KiB | 22.0 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.
Performance issues directly impact user engagement and conversion rates.
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
More information about the performance of your application. These numbers don't directly affect the Performance score.
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
Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
× div#page > div#privacy_collapse > div.panel-body > div#headingOne |
Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
× div.panel-body > div#headingOne > h4.panel-title > button#closePrivacyOptInOut |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
× div#privacy_collapse > div.panel-body > div#headingOne > h4.panel-title |
These are opportunities to improve keyboard navigation in your application.
Names and labels
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.site-header__main > div.site-header__container > button.user-account__button > a div.site-header__main > div.site-header__container > button.user-account__button > a |
header.site-header > div.menu-bar > div.menu-bar__container > a header.site-header > div.menu-bar > div.menu-bar__container > a |
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.
Best practices
Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Page 1 nav.carousel__pagination > ol#ai-carousel-pagination-list-54 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 2 nav.carousel__pagination > ol#ai-carousel-pagination-list-54 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 3 nav.carousel__pagination > ol#ai-carousel-pagination-list-54 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 1 nav.carousel__pagination > ol#ai-carousel-pagination-list-58 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 2 nav.carousel__pagination > ol#ai-carousel-pagination-list-58 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 3 nav.carousel__pagination > ol#ai-carousel-pagination-list-58 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 1 nav.carousel__pagination > ol#ai-carousel-pagination-list-62 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 2 nav.carousel__pagination > ol#ai-carousel-pagination-list-62 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 3 nav.carousel__pagination > ol#ai-carousel-pagination-list-62 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 4 nav.carousel__pagination > ol#ai-carousel-pagination-list-62 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 5 nav.carousel__pagination > ol#ai-carousel-pagination-list-62 > li.carousel__pagination-item > button.carousel__pagination-button |
Page 6 nav.carousel__pagination > ol#ai-carousel-pagination-list-62 > li.carousel__pagination-item > button.carousel__pagination-button |
These items highlight common accessibility best practices.
Best Practices
General
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| SharedStorage | |
| AttributionReporting | connect.facebook.net/en_US/fbevents.js line 279, col 769 |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Failed to load resource: net::ERR_NAME_NOT_RESOLVED |
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.
Performance issues directly impact user engagement and conversion rates.
| Link destination | Link Text |
|---|---|
| www.hachettebookgroup.com/landing-page/banned-books/ | 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
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
header.site-header > div.menu-bar > div.menu-bar__container > a.menu-bar__imprint-branding header.site-header > div.menu-bar > div.menu-bar__container > a.menu-bar__imprint-branding |
To appear in search results, crawlers need access to your app.