Lighthouse Desktop

· 0 checks — Desktop 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.

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
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
media.sailthru.com/6jb/1ka/3/n/69c1b3ef4b336.jpg	0.0 ms	69.8 KiB
vpodv.harpercollins.com/eat/core	0.0 ms	48.7 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	600.0 s	48.1 KiB
/signals/config/1115990331856782?v=2.9.303&r=stable&domai...	1200.0 s	48.1 KiB
na.shgcdn3.com/collector.js?shop=harpercollins-us.myshopify.com	0.0 ms	26.6 KiB
b-code.liadm.com/a-0172.min.js	86400.0 s	47.1 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
/fss/flelv5/a0893b4f-eab4-4495-af29-968048b08b86/hcp-logo...	0.0 ms	18.5 KiB
js.adsrvr.org/up_loader.1.1.0.js	0.0 ms	12.3 KiB
cdn.auth0.com/js/auth0-spa-js/2.1/auth0-spa-js.production.js	10800.0 s	13.7 KiB
widgetic.com/sdk/sdk.js?shop=harpercollins-us.myshopify.com	86400.0 s	16.1 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.6 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.6 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.6 KiB
cdn.attn.tv/hcp/dtag.js?shop=harpercollins-us.myshopify.com	120.0 s	3.7 KiB
vpodv.harpercollins.com/hcp/load	300.0 s	3.5 KiB
ct.pinterest.com/static/ct/token_create.js	7200.0 s	3.9 KiB
s.pinimg.com/ct/lib/main.10d2511a.js	1209600.0 s	27.3 KiB
script.crazyegg.com/pages/scripts/0064/3811.js	300.0 s	2.7 KiB
/a/elevar/static/configs/66b8d458c1fb8f192642404f8faece57...	1.0 s	2.2 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	300.0 s	2.1 KiB
/configs/66b8d458c1fb8f192642404f8faece57fa6207fc/config.js	1.0 s	2.0 KiB
s.pinimg.com/ct/core.js	7200.0 s	2.1 KiB
/st?ga_tracking_id=G-BWH2Y83W11&ga_client_id=1600003544.1...	0.0 ms	1.2 KiB
/redirect-app.js?shop=harpercollins-us.myshopify.com	0.0 ms	1.2 KiB
/a/elevar/static/configs/66b8d458c1fb8f192642404f8faece57...	1.0 s	1.1 KiB
js.adsrvr.org/universal_pixel.js	0.0 ms	935 B
/rp.gif?ts=1776813440427&id=t2_ee3m052f&event=PageVisit&m...	0.0 ms	666 B
/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode....	2815.0 s	724 B
/st?ga_tracking_id=G-BWH2Y83W11&ga_client_id=1600003544.1...	0.0 ms	582 B
shop.app/checkouts/internal/preloads.js?locale=en-US&shop_id=28528214050	60.0 s	531 B
/config/com/31bf507c-91e5-4593-84d7-7aec67170ffa.js?v=3.5...	0.0 ms	476 B
cdn.attn.tv/growth-tag-assets/client-configs/NYV.js	0.0 ms	371 B
www.gstatic.com/recaptcha/api2/logo_48.png	604800.0 s	2.3 KiB
cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js	604800.0 s	758 B
/v.gif?cd=0&a=975792&d=harpercollins.com&u=DA1935CB17F1F3...	43200.0 s	147 B
/tr/?id=1115990331856782&ev=PageView&dl=https%3A%2F%2Fwww...	0.0 ms	16 B
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	0 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[reflowTime:103.167 source:map[column:33086 line:1 type:source-location url:https://www.redditstatic.com/ads/pixel.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:170.882 source:map[type:text value:[unattributed]]] map[reflowTime:103.167 source:map[column:22094 line:0 type:source-location url:https://www.redditstatic.com/ads/pixel.js urlProvider:network]] map[reflowTime:110.747 source:map[column:37700 line:11 type:source-location url:https://www.harpercollins.com/cdn/shop/t/8/assets/swiper.min.js?v=70355053751033516171589214879 urlProvider:network]] map[reflowTime:12.152 source:map[column:6938 line:11 type:source-location url:https://www.harpercollins.com/cdn/shop/t/8/assets/swiper.min.js?v=70355053751033516171589214879 urlProvider:network]] map[reflowTime:20.164 source:map[column:22489 line:11 type:source-location url:https://www.harpercollins.com/cdn/shop/t/8/assets/swiper.min.js?v=70355053751033516171589214879 urlProvider:network]] map[reflowTime:0.524 source:map[column:332 line:412 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:6.287 source:map[column:45940 line:1 type:source-location url:https://sc-static.net/scevent.min.js urlProvider:network]] map[reflowTime:0.436 source:map[column:287665 line:0 type:source-location url:https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMg.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
BillboardOverlay ReleaseMe `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay-ReleaseMe_780x.png?v=177...	92.3 KiB	72.2 KiB
BillboardOverlay2SOE `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/BillboardOverlay2_SOE_780x.png?v=1775072619	78.3 KiB	60.3 KiB
Come Eat by Melissa Ben-Ishay (9780063451636) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063451650_c3817265-b496-4468-b651-e46...	48.9 KiB	44.0 KiB
The Amalfi Curse by Sarah Penner (9780778308003) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780369746917_54eb1a31-cc87-43c4-8adb-43a...	48.8 KiB	42.8 KiB
BillboardOverlay2CherryBaby `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay2_CherryBaby_780x.png?v=1...	58.1 KiB	40.1 KiB
The Lost Cities of El Norte by Peter Stark (9780063383883) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063383883_270x.jpg?v=1776540483	45.3 KiB	39.4 KiB
Small Boat by Vincent Delecroix, Helen Stevenson (9780063491694) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063491717_3fee07c1-906c-4f12-a0f7-281...	43.6 KiB	37.7 KiB
The Auction (Deluxe Limited Edition) by Sadie Kincaid (9780778306085) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780778306085_270x.jpg?v=1776565050	43.9 KiB	37.7 KiB
Shadow Strike by Brad Taylor (9780063433199) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063433229_82e95ebe-5668-44e5-a99d-5f9...	43.1 KiB	37.1 KiB
Looking for Your Next Favorite Read? Get new releases, author news, recommendat… `body.sailthru-overlay-no-scroll > section#sailthru-overlay-container > div.sailthru-overlay`	media.sailthru.com/6jb/1ka/3/n/69c1b3ef4b336.jpg	69.3 KiB	34.7 KiB
Remarkably Bright Creatures [Movie Tie-in] by Shelby Van Pelt (9780063512955) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063512955_270x.jpg?v=1775768828	40.1 KiB	34.2 KiB
BillboardOverlayStarside `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay_Starside_780x.png?v=1774...	54.2 KiB	34.0 KiB
Japanese Gothic by Kylie Lee Baker (9781335001559) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780369774897_270x.jpg?v=1776565263	37.6 KiB	31.6 KiB
Divergent Deluxe Limited Edition by Veronica Roth, Nicolas Delort (978006348212… `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063482128_270x.jpg?v=1774435270	36.7 KiB	30.7 KiB
The Rough Side of the Mountain by Keisha Lance Bottoms (9780063420083) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063420106_80915f20-55c1-44a5-a4a2-722...	35.6 KiB	29.7 KiB
BillboardOverlayTEWI `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/BillboardOverlay_TEWI_780x.png?v=1775581912	47.1 KiB	29.1 KiB
Afternoon Hours of a Hermit by Patrick Cottrell (9780063435063) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063435094_270x.jpg?v=1775244893	33.3 KiB	27.3 KiB
Homesick Nomad by Brianna Madia (9780063440135) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063440166_8b8a38c8-d057-433b-a01c-7e5...	32.3 KiB	26.3 KiB
Burn the Haystack by Jennie Young, PhD (9780063447578) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063447554_270x.jpg?v=1776540602	32.2 KiB	26.2 KiB
Reborn by Jaymin Eve (9780778306047) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780778306047_270x.jpg?v=1776565436	30.8 KiB	25.3 KiB
The Thorn Queen Deluxe Limited Edition by Sasha Peyton Smith (9780063481152) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063481152_9efd921c-7aae-41e0-8ff0-354...	28.6 KiB	22.7 KiB
Cherry Baby by Rainbow Rowell (9780063380264) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063380295_26f9ae70-989a-45c4-b0b4-2bd...	28.1 KiB	22.1 KiB
A Soldier's Wife by Blair Underwood (9780063211872) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063211872_b580ff7e-9574-4134-b899-1c1...	27.7 KiB	21.7 KiB
Release Me (Deluxe Limited Edition) by Tahereh Mafi (9780063480339) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063480339_270x.jpg?v=1775584508	26.6 KiB	20.6 KiB
RFK Jr. by Isabel Vincent (9780063472280) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063472259_270x.jpg?v=1776597394	25.7 KiB	19.7 KiB
Overlay800x34050b4e62b 8dbc 49b1 babd 2bc606de06bf `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/Overlay_800x340_50b4e62b-8dbc-49b1-babd-2...	33.0 KiB	17.2 KiB
div > div > div.sailthru_0_0_0 > img `div > div > div.sailthru_0_0_0 > img`	/fss/flelv5/a0893b4f-eab4-4495-af29-968048b08b86/hcp-logo...	18.0 KiB	17.0 KiB
Tile_Tolkien_8d7f0459 2d3c 4ddd 9ad0 fa058d95a565 `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	/cdn/shop/files/Tile_Tolkien_8d7f0459-2d3c-4ddd-9ad0-fa05...	27.9 KiB	16.8 KiB
I Choose Me by Jennie Garth (9780778305637) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9781488237324_15375989-d4ae-42bc-8f93-93f...	22.2 KiB	16.2 KiB
The Queen and Her Presidents by Susan Page (9780063397392) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063397415_270x.jpg?v=1776531329	21.9 KiB	15.9 KiB
New_in_Historical_Fiction_2026_TileAd `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	/cdn/shop/files/New_in_Historical_Fiction_2026_TileAd_300...	26.7 KiB	15.6 KiB
Sunshine, Lemons and Sea Salt by Donna Hay (9780063514164) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063514171_e1e12a7f-6d94-4513-9882-310...	18.9 KiB	14.1 KiB
What I Wish I Knew About Luck by Tina Seelig (9780063471368) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063471351_270x.jpg?v=1775581181	18.7 KiB	12.7 KiB
Tile_DreamHarbor `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	www.harpercollins.com/cdn/shop/files/Tile_DreamHarbor_300x.png?v=1757601355	22.5 KiB	11.3 KiB
TileAd_MinaLima `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	www.harpercollins.com/cdn/shop/files/TileAd_MinaLima_300x.png?v=1760373513	20.5 KiB	9.4 KiB
HarperCollins_Homepage_Graphic_Mobile_35949132 6911 4597 811b 67af11b5039c `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	/cdn/shop/files/HarperCollins_Homepage_Graphic_Mobile_359...	19.3 KiB	8.2 KiB
HC_Home_TileAd_Cookbooks2026 `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	/cdn/shop/files/HC_Home_TileAd_Cookbooks2026_300x.png?v=1...	18.3 KiB	7.1 KiB
TileAd_WinniePooh `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	www.harpercollins.com/cdn/shop/files/TileAd_WinniePooh_300x.png?v=1729631081	16.7 KiB	5.5 KiB
HCP Homepage TileAd Grad `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	/cdn/shop/files/HCP-Homepage-TileAd-Grad_300x.png?v=17767...	16.4 KiB	5.2 KiB
HC_Home_TileAd_Spring2026 `div.swiper-wrapper > div.swiper-slide > a > img.visitOurImg`	/cdn/shop/files/HC_Home_TileAd_Spring2026_300x.png?v=1776...	15.8 KiB	4.6 KiB
Build Your Bookmail Stay up to date on what you love—new releases, author upda… `body.sailthru-overlay-no-scroll > main.main-content > div#shopify-section-newsletter_signup_Yh4QAr`	/cdn/shop/t/8/assets/books_newsletter_bg.png?v=1547651083...	45.1 KiB	4.3 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-41-DIV

nodeLabel: Shop Now

path: 1,HTML,1,BODY,26,MAIN,1,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,A,0,DIV

selector: div.swiper-wrapper > div.swiper-slide > a.fourByTwo > div.swiper-lazy

snippet: <div class="swiper-lazy grid-item swiper-lazy-loaded" style="background-image: url("//www.harpercollins.com/cdn/shop/files/BillboardBac…");">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,...	1.3 KiB	286 ms
/cdn/shop/t/8/assets/vue.min.js?v=17382022256029746221158...	32.7 KiB
/cdn/shop/t/8/assets/bootstrap.min.css?v=5927244447714181...	20.2 KiB	85 ms
/cdn/shop/t/8/assets/cart-drawer.css?v=842942093884082011...	2.5 KiB
/cdn/shop/t/8/assets/theme-critical.css?v=103820723354404...	5.5 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	2.1 KiB

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
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2	15 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 329 ms

URL	Time Spent
harpercollins.com/	329 ms
www.harpercollins.com/	0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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: 40 ms 18.7 KiB

URL	Transfer Size	Est Savings
/cdn/shop/t/8/assets/bootstrap.min.css?v=5927244447714181...	19.6 KiB	18.7 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: 130 ms 716.6 KiB

URL	Transfer Size	Est Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.8 KiB	176.8 KiB
www.googletagmanager.com/gtag/destination?id=AW-16769633610&cx=c&gtm=4e64h1	143.5 KiB	60.7 KiB
www.googletagmanager.com/gtag/js?id=DC-15547771&cx=c&gtm=4e64h1	129.3 KiB	60.5 KiB
www.googletagmanager.com/gtag/js?id=G-BWH2Y83W11&cx=c&gtm=4e64h1	151.0 KiB	59.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J46CG3	180.1 KiB	59.2 KiB
/cdn/shop/t/8/assets/algolia_externals.js?v=1314249531217...	80.6 KiB	59.0 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMg.js	105.6 KiB	56.4 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	33.2 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	47.7 KiB	29.5 KiB
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...	55.1 KiB	28.9 KiB
vpodv.harpercollins.com/eat/core	48.7 KiB	27.3 KiB
www.harpercollins.com/cdn/wpm/b5153dfa3wa14e0a32p72aa89e7m94579b79m.js	59.9 KiB	24.1 KiB
s.pinimg.com/ct/lib/main.10d2511a.js	27.3 KiB	21.3 KiB
b-code.liadm.com/a-0172.min.js	46.8 KiB	20.3 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.

URL	Total CPU Time	Script Evaluation	Script Parse
www.redditstatic.com/ads/pixel.js	4.0 s	3.6 s	2.2 ms
Unattributable	1.7 s	147 ms	0.0 ms
www.harpercollins.com/	1.4 s	170 ms	16 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	590 ms	451 ms	23 ms
/cdn/shop/t/8/assets/swiper.min.js?v=70355053751033516171...	462 ms	125 ms	3.0 ms
www.googletagmanager.com/gtm.js?id=GTM-5J46CG3	243 ms	208 ms	18 ms
/pages/versioned/tracking-scripts/158692313dc4b9f2e28d9e9...	145 ms	135 ms	2.1 ms
www.harpercollins.com/cdn/wpm/b5153dfa3wa14e0a32p72aa89e7m94579b79m.js	136 ms	105 ms	4.9 ms
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...	118 ms	105 ms	3.9 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMg.js	108 ms	90 ms	14 ms
vpodv.harpercollins.com/eat/core	105 ms	76 ms	9.4 ms
/cdn/s/trekkie.storefront.853740ed6e9bdebbd97573c5bbdd9cf...	96 ms	86 ms	2.7 ms
www.googletagmanager.com/gtag/js?id=G-BWH2Y83W11&cx=c&gtm=4e64h1	85 ms	71 ms	12 ms
www.googletagmanager.com/gtag/js?id=DC-15547771&cx=c&gtm=4e64h1	73 ms	60 ms	12 ms
connect.facebook.net/en_US/fbevents.js	73 ms	56 ms	16 ms
www.googletagmanager.com/gtag/destination?id=AW-16769633610&cx=c&gtm=4e64h1	71 ms	61 ms	9.4 ms
sc-static.net/scevent.min.js	68 ms	59 ms	1.5 ms
ak.sail-horizon.com/spm/spm.v1.min.js	57 ms	41 ms	14 ms
/signals/config/1115990331856782?v=2.9.303&r=stable&domai...	50 ms	41 ms	8.5 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
Script Evaluation	6.4 s
Other	2.3 s
Style & Layout	933 ms
Rendering	353 ms
Script Parsing & Compilation	256 ms
Parse HTML & CSS	97 ms
Garbage Collection	94 ms

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 13.1 KiB

URL	Transfer Size	Est Savings
shopify-webhooks.sailthru.com/shopify.js?shop=harpercollins-us.myshopify.com	24.2 KiB	10.4 KiB
inline: function st_runDataValidation(form) { …	4.0 KiB	2.6 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
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	362.4 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.9 KiB
/cdn/shopifycloud/checkout-web/assets/c1/shop-pay-useHasO...	329.5 KiB
www.harpercollins.com/cdn/shop/files/BillboardBackground_SOE.png?v=1775072619	191.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J46CG3	180.5 KiB
www.googletagmanager.com/gtag/js?id=G-BWH2Y83W11&cx=c&gtm=4e64h1	151.1 KiB
www.googletagmanager.com/gtag/destination?id=AW-16769633610&cx=c&gtm=4e64h1	143.6 KiB
www.googletagmanager.com/gtag/js?id=DC-15547771&cx=c&gtm=4e64h1	129.4 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMg.js	106.2 KiB
/cdn/shop/files/BillboardBackground2_CherryBaby.png?v=177...	105.7 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
sun.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/sun.svg?v=13006734707744578563159113...
BillboardOverlayStarside `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay_Starside_780x.png?v=1774...
Overlay800x34050b4e62b 8dbc 49b1 babd 2bc606de06bf `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/Overlay_800x340_50b4e62b-8dbc-49b1-babd-2...
BillboardOverlayStarside `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay_Starside_780x.png?v=1774...
BillboardOverlay ReleaseMe `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay-ReleaseMe_780x.png?v=177...
BillboardOverlay2CherryBaby `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay2_CherryBaby_780x.png?v=1...
BillboardOverlayTEWI `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/BillboardOverlay_TEWI_780x.png?v=1775581912
BillboardOverlay2SOE `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/BillboardOverlay2_SOE_780x.png?v=1775072619
BillboardOverlay2CherryBaby `a.fourByTwo > div.swiper-lazy > div.image-container > img.swiper-lazy`	/cdn/shop/files/BillboardOverlay2_CherryBaby_780x.png?v=1...
div > div > div.sailthru_0_0_0 > img `div > div > div.sailthru_0_0_0 > img`	/fss/flelv5/a0893b4f-eab4-4495-af29-968048b08b86/hcp-logo...
New in Memoir & Biography `div.row > div.col-md-4 > a.spotlight-block > img`	/cdn/shop/files/HCP-Homepage-Spotlight-memoirs3_300x.png?...
Lines Worth Returning To `div.row > div.col-md-4 > a.spotlight-block > img`	/cdn/shop/files/Spotlight-Image_NPM2026_300x.png?v=177558...
Find the Perfect Gift `div.row > div.col-md-4 > a.spotlight-block > img`	/cdn/shop/files/HCP-Homepage-Spotlight-MothersDay-Final_3...
The Auction (Deluxe Limited Edition) by Sadie Kincaid (9780778306085) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780778306085_270x.jpg?v=1776565050
Release Me (Deluxe Limited Edition) by Tahereh Mafi (9780063480339) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063480339_270x.jpg?v=1775584508
I Choose Me by Jennie Garth (9780778305637) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9781488237324_15375989-d4ae-42bc-8f93-93f...
Japanese Gothic by Kylie Lee Baker (9781335001559) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780369774897_270x.jpg?v=1776565263
The Amalfi Curse by Sarah Penner (9780778308003) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780369746917_54eb1a31-cc87-43c4-8adb-43a...
RFK Jr. by Isabel Vincent (9780063472280) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063472259_270x.jpg?v=1776597394
What to Make of a Life by Jim Collins (9780063488809) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063488793_af67b9d0-06d5-47bf-b832-5eb...
Divergent Deluxe Limited Edition by Veronica Roth, Nicolas Delort (978006348212… `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063482128_270x.jpg?v=1774435270
Shadow Strike by Brad Taylor (9780063433199) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063433229_82e95ebe-5668-44e5-a99d-5f9...
Remarkably Bright Creatures [Movie Tie-in] by Shelby Van Pelt (9780063512955) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063512955_270x.jpg?v=1775768828
Afternoon Hours of a Hermit by Patrick Cottrell (9780063435063) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063435094_270x.jpg?v=1775244893
What I Wish I Knew About Luck by Tina Seelig (9780063471368) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063471351_270x.jpg?v=1775581181
Cherry Baby by Rainbow Rowell (9780063380264) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063380295_26f9ae70-989a-45c4-b0b4-2bd...
A Soldier's Wife by Blair Underwood (9780063211872) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063211872_b580ff7e-9574-4134-b899-1c1...
The Queen and Her Presidents by Susan Page (9780063397392) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063397415_270x.jpg?v=1776531329
Homesick Nomad by Brianna Madia (9780063440135) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063440166_8b8a38c8-d057-433b-a01c-7e5...
Burn the Haystack by Jennie Young, PhD (9780063447578) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063447554_270x.jpg?v=1776540602
Wild Darling by Alexandra Moody (9780063485235) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063485242_270x.jpg?v=1776475856
The Rough Side of the Mountain by Keisha Lance Bottoms (9780063420083) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063420106_80915f20-55c1-44a5-a4a2-722...
The Lost Cities of El Norte by Peter Stark (9780063383883) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063383883_270x.jpg?v=1776540483
The Left and the Lucky by Willy Vlautin (9780063346635) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063346659_270x.jpg?v=1776364970
The Thorn Queen Deluxe Limited Edition by Sasha Peyton Smith (9780063481152) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063481152_9efd921c-7aae-41e0-8ff0-354...
The Ending Writes Itself by Evelyn Clarke (9780063444614) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063444645_bf669e6e-67f4-4982-9be5-f8a...
Small Boat by Vincent Delecroix, Helen Stevenson (9780063491694) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063491717_3fee07c1-906c-4f12-a0f7-281...
Reborn by Jaymin Eve (9780778306047) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780778306047_270x.jpg?v=1776565436
Come Eat by Melissa Ben-Ishay (9780063451636) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063451650_c3817265-b496-4468-b651-e46...
Sunshine, Lemons and Sea Salt by Donna Hay (9780063514164) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	/cdn/shop/files/9780063514171_e1e12a7f-6d94-4513-9882-310...
tags-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/tags-solid.svg?v=4890339531142658714...
space-shuttle-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/space-shuttle-solid.svg?v=1476626834...
coffee-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/coffee-solid.svg?v=11044005316603248...
trophy-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/trophy-solid.svg?v=16631529956709616...
star-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/star-solid.svg?v=1394401084955454416...
bullhorn-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/bullhorn-solid.svg?v=892476809382480...
edit-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/edit-solid.svg?v=9881760352712071625...
puzzle-piece-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/puzzle-piece-solid.svg?v=14694636537...
Girl Dad by Sean Williams, Jay Davis (9780063464988) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`	www.harpercollins.com/cdn/shop/files/9780063113633_270x.jpg?v=1776540602
certificate-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/certificate-solid.svg?v=590740886812...
headphones-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/headphones-solid.svg?v=8561887195532...
pencil-alt-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/pencil-alt-solid.svg?v=1144157249778...
suitcase-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/suitcase-solid.svg?v=141027701594985...
twitch-brands.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/twitch-brands.svg?v=7291508919161361...
clock-regular.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/clock-regular.svg?v=1750312507703186...
heart-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/heart-solid.svg?v=183840197343736326...
list-alt-regular.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/list-alt-regular.svg?v=1779236942250...
utensils-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/utensils-solid.svg?v=428962413148048...
child-solid.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/child-solid.svg?v=253234376956799362...
lightbulb-regular.svg `div.row > div.col-md-3 > div.backgroundIcon > img.browseIcon`	/cdn/shop/t/8/assets/lightbulb-regular.svg?v=167814293766...
left-arrow `div.row > div.col-1 > div#swiper-button-prev-16474506515f631378-1 > img`	/cdn/shop/t/8/assets/carousel-left.svg?v=1499575885140700...
right arrow `div.row > div.col-1 > div#swiper-button-next-16474506515f631378-1 > img`	/cdn/shop/t/8/assets/carousel-right.svg?v=795100909965146...
left-arrow `div.row > div.col-1 > div#leftArrow368c5917-cd88-40d0-8081-aa1be8e207a2 > img.leftArrowImg`	/cdn/shop/t/8/assets/carousel-left.svg?v=1499575885140700...
right-arrow `div.row > div.col-1 > div#rightArrow368c5917-cd88-40d0-8081-aa1be8e207a2 > img.rightArrowImg`	/cdn/shop/t/8/assets/carousel-right.svg?v=795100909965146...
left-arrow `div.row > div.col-1 > div#leftArrow1586898863765 > img.leftArrowImg`	/cdn/shop/t/8/assets/carousel-left.svg?v=1499575885140700...
right-arrow `div.row > div.col-1 > div#rightArrow1586898863765 > img.rightArrowImg`	/cdn/shop/t/8/assets/carousel-right.svg?v=795100909965146...
Footer Logo `div#rowContain > div.leftCol > a > img.subHeadImg`	/cdn/shop/files/footer-logo_7ce61f7b-377b-4234-a833-402fa...
Are you a childrens librarian or educator? `div.roll-col > div.roll-call-container > a.imageUrl > img.rollCallImg`	/cdn/shop/files/Harper_Stacks_thumbnail_-_new3_1110x.png?...
Are you a librarian? `div.roll-col > div.roll-call-container > a.imageUrl > img.rollCallImg`	www.harpercollins.com/cdn/shop/files/RC-Bookshelf_1110x.png?v=1614765644
Are you a book club? `div.roll-col > div.roll-call-container > a.imageUrl > img.rollCallImg`	www.harpercollins.com/cdn/shop/files/RC-person_1110x.png?v=1614765644
Are you an educator? `div.roll-col > div.roll-call-container > a.imageUrl > img.rollCallImg`	www.harpercollins.com/cdn/shop/files/RC-Apple_1110x.png?v=1614765644
Starside (Deluxe Limited Edition) by Alex Aster (9780063462434) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Phases by Brandy (9781335013279) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
The Wings That Bind (Deluxe Edition) by Briar Boleyn (9780778306351) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Warriors: Changing Skies #3: Chasing Shadows by Erin Hunter (9780063357167) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Wait With Me by Amy Daws (9781335219985) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
How Soccer Explains the World by Franklin Foer (9780063486768) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Lake Effect by Cynthia D'Aprix Sweeney (9780063377684) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
What Mattered Most by Ty Herndon, David Ritz (9780063360105) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
How a Little Becomes a Lot by Eric Zimmer (9780063420809) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Python's Kiss by Louise Erdrich (9780063375000) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
The Astral Library (Standard Edition) by Kate Quinn (9780063479753) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Everyone in This Bank Is a Thief by Benjamin Stevenson (9780063434387) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
The Littlest Elephant by Katherine Applegate, Lita Judge (9780063357785) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Black Out Loud by Geoff Bennett (9780063418172) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
City of Night Birds by Juhea Kim (9780063394759) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Strange Buildings by Uketsu (9780063517806) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
While We’re Here by Anne Wynter, Micha Archer (9780063238299) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Hooked by Asako Yuzuki, Polly Barton (9780063442412) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
This Will Be Interesting by E. B. Asher (9780063440319) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
No Friend to This House by Natalie Haynes (9780063258440) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
Life on the Bridge by Kaelynn Partlow (9780063493506) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`
The Social Circle by Sophie Wan (9781525800061) `div.swiper-wrapper > div.swiper-slide > a.swiper-link > img.swiper-lazy`

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

●Max Potential First Input Delay 110 ms

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 41 user timings

●Avoid long main-thread tasks 13 long tasks found

●Avoid non-composited animations 7 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 240 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 30 ms

●Avoid large layout shifts 8 layout shifts found

○INP breakdown

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

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Looking for Your Next Favorite Read? Get new releases, author news, recommendat… `body.sailthru-overlay-no-scroll > section#sailthru-overlay-container`

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.

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.cart__contents > div.cart__header > div.cart__header_close > button.cart__close `div.cart__contents > div.cart__header > div.cart__header_close > button.cart__close`
body.sailthru-overlay-no-scroll > section#sailthru-overlay-container > div.sailthru-overlay > button.sailthru-overlay-close `body.sailthru-overlay-no-scroll > section#sailthru-overlay-container > div.sailthru-overlay > button.sailthru-overlay-close`

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.search-box > button.magnifying-glass > div > img `div.search-box > button.magnifying-glass > div > img`
div.head-column > div.iconContainer > a#desktop-account-link > img `div.head-column > div.iconContainer > a#desktop-account-link > img`
div > div > div.sailthru_0_0_0 > img `div > div > div.sailthru_0_0_0 > img`

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.container > div.row > div.col-md-10 > iframe#hc-signup `div.container > div.row > div.col-md-10 > iframe#hc-signup`

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#desktop-header > div.row > h1.head-column > a `div#desktop-header > div.row > h1.head-column > 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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Stay up to date with new releases, author news, and reading picks—plus get 15% … `body.sailthru-overlay-no-scroll > aside#shopify-section-header-promo-bar > a#header-promo-header-promo-bar > div.container`
BESTSELLERS `div#shopify-section-16474506515f631378 > ul#tabs > li.nav-item > a.nav-link`
COMING SOON `div#shopify-section-16474506515f631378 > ul#tabs > li.nav-item > a.nav-link`
div.sailthru-overlay > div > div > input#sailthru-user-acquisition-email `div.sailthru-overlay > div > div > input#sailthru-user-acquisition-email`

These are opportunities to improve the legibility of your content.

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
New in Memoir & Biography `div.row > div.col-md-4 > a.spotlight-block > h5`
BROWSE AND SHOP `section.rollCall > div.roll-call-header > div.roll-call-title > h5`

These are opportunities to improve keyboard navigation in your application.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
CONTACT US `footer.hcFooter > ul.footNavCont > li > a.titleBold`
Customer Service `li > ul.child > li > a.child-link`
For Authors `li > ul.child > li > a.child-link`
OUR COMPANY `footer.hcFooter > ul.footNavCont > li > a.titleBold`
About Us `li > ul.child > li > a.child-link`
Our Values & Commitments `li > ul.child > li > a.child-link`
Services, Sales & Rights `li > ul.child > li > a.child-link`
Media `li > ul.child > li > a.child-link`
Careers `li > ul.child > li > a.child-link`
NOTICES `footer.hcFooter > ul.footNavCont > li > a.titleBold`
Publishing Fraud Alert `li > ul.child > li > a.child-link`
Recruitment Fraud Alert `li > ul.child > li > a.child-link`

These items highlight common accessibility best practices.

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
View Collection `div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.fourByTwo`
Adult Bestsellers `div.container > div.row > div.col-md-3 > a.browseLinks`
Children's Bestsellers `div.container > div.row > div.col-md-3 > a.browseLinks`
New Releases `div.container > div.row > div.col-md-3 > a.browseLinks`
Coming Soon `div.container > div.row > div.col-md-3 > a.browseLinks`
Audiobooks `div.container > div.row > div.col-md-3 > a.browseLinks`
Books for Kids `div.container > div.row > div.col-md-3 > a.browseLinks`
Books for Tweens `div.container > div.row > div.col-md-3 > a.browseLinks`
Deals `div.container > div.row > div.col-md-3 > a.browseLinks`
Biography & Memoir `div.container > div.row > div.col-md-3 > a.browseLinks`
Business `div.container > div.row > div.col-md-3 > a.browseLinks`
Cookbooks `div.container > div.row > div.col-md-3 > a.browseLinks`
Fiction `div.container > div.row > div.col-md-3 > a.browseLinks`
History `div.container > div.row > div.col-md-3 > a.browseLinks`
Mystery `div.container > div.row > div.col-md-3 > a.browseLinks`
Religion & Inspiration `div.container > div.row > div.col-md-3 > a.browseLinks`
Romance `div.container > div.row > div.col-md-3 > a.browseLinks`
Science Fiction & Fantasy `div.container > div.row > div.col-md-3 > a.browseLinks`
Self-Improvement `div.container > div.row > div.col-md-3 > a.browseLinks`
Large Print `div.container > div.row > div.col-md-3 > a.browseLinks`
Book Clubs `div.container > div.row > div.col-md-3 > a.browseLinks`

○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

●`[role]` values are valid

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

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

●Form elements have associated labels

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

●`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

●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.

●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

●Document has a main landmark.

●Deprecated ARIA roles were not used

●All heading elements contain content.

●Identical links have the same purpose.

○`[accesskey]` values are unique

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

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

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

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○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

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○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	/cdn/shopifycloud/storefront/assets/shop_events_listener-...

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
www.harpercollins.com/search?type=product&q=variants.sku:9781335001559&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063345119&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063455047&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063419469&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422087&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063304079&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063457232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063237766&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063416697&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063384934&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063475656&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063435063&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063452138&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063415232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/apps/customer	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063440135&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063221178&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063415690&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305637&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063433199&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063483644&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063393400&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063374454&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063434714&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063434530&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063448087&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063345119&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063340947&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781335001559&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063399419&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781525805110&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063419469&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781335013439&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063494015&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063416697&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063457232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063384934&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063411814&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063389946&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063452138&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063221178&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063415690&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305637&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063434714&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063393400&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063433199&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063434530&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063448087&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063340947&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063399419&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781525805110&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781335001559&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063419469&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063494015&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781335013439&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063457232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063384934&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063452138&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063411814&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063221178&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063393400&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063433199&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063434714&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063399419&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781525805110&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063340947&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781335001559&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063419469&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063384934&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063457232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063452138&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063221178&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063393400&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063433199&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063434714&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063399419&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9781525805110&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063340947&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063457232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063384934&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063419469&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063221178&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063433199&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063340947&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063457232&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063221178&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063422377&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063488571&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780008761479&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063346635&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063484320&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063446618&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780062995438&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305835&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780063451070&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
www.harpercollins.com/search?type=product&q=variants.sku:9780778305897&view=sku	`Failed to load resource: the server responded with a status of 429 ()`
/cdn/shop/t/8/assets/vue.min.js?v=17382022256029746221158... line 5, col 11751	ReferenceError: axios is not defined at wn.refreshCart (https://www.harpercollins.com/:2608:9) at wn.mounted (https://www.harpercollins.com/:2621:12) at He (https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:11397) at Yt (https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:25339) at https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:68312 at wn.$mount (https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:68331) at wn.$mount (https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:93549) at t._init (https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:33038) at new wn (https://www.harpercollins.com/cdn/shop/t/8/assets/vue.min.js?v=173820222560297462211589214883:6:30368) at https://www.harpercollins.com/:2599:14
www.harpercollins.com/ line 5807, col 36	`SyntaxError: Failed to execute 'json' on 'Response': Unexpected token 'T', "There was "... is not valid JSON at https://www.harpercollins.com/:5750:45 at Array.map (<anonymous>) at https://www.harpercollins.com/:5748:67`
	TypeError: Cannot read properties of null (reading 'querySelectorAll') at <anonymous>:1:97 at https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:1032:429 at uR (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:1034:31) at Md.tR (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:1031:92) at Md.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:421:187) at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:347:466) at fb (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:310:719) at eb (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:310:470) at Md.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:371:473) at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-5J46CG3:347:466)

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○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

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.search-box > button.magnifying-glass > div > img `div.search-box > button.magnifying-glass > div > img`
div.head-column > div.iconContainer > a#desktop-account-link > img `div.head-column > div.iconContainer > a#desktop-account-link > img`
div > div > div.sailthru_0_0_0 > img `div > div > div.sailthru_0_0_0 > img`

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 have descriptive text

●Links are crawlable

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○robots.txt is valid