Page summary

Summary

Metric	Value
Page metrics
Performance Score	63
Total Page Transfer Size	3.8 MB
Requests	151
Timing metrics
TTFB [median]	47 ms
First Paint [median]	254 ms
Fully Loaded [median]	6.315 s
Google Web Vitals
TTFB [median]	47 ms
First Contentful Paint (FCP) [median]	254 ms
Largest Contentful Paint (LCP) [median]	2.117 s
Cumulative Layout Shift (CLS) [median]	0.11
Total Blocking Time [median]	1.024 s
Max Potential FID [median]	736 ms
CPU metrics
CPU long tasks [median]	4
CPU longest task duration	839 ms
CPU last long task happens at	4.491 s
Visual Metrics
First Visual Change [median]	234 ms
Speed Index [median]	3.082 s
Visual Complete 85% [median]	5.134 s
Visual Complete 99% [median]	5.200 s
Last Visual Change [median]	5.734 s
Chrome User Experience Report (CRUX)
First Contentful Paint [p75]	1.316 s
Largest Contentful Paint (LCP) [p75]	3.488 s
Cumulative Layout Shift (CLS) [p75]	0.71

Timings Summary

Waterfall

Run 2 SpeedIndex median

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

0.3 sCPU Long Task duration 74 msFirst Visual Change 234 msFirst Contentful Paint 254 ms

0.4 sDOM Content Loaded Time 319 ms

0.5 sPage Load Time 407 ms

0.6 s

0.7 s

0.9 sCPU Long Task duration 839 ms

1.7 s

1.8 sLayout Shift 0.00300 1.769 s

1.9 sLayout Shift 0.00115 1.871 s

2 s

2.2 sLayout Shift 0.07746 2.166 s

2.3 sLCP <IMG> 2.289 s

2.4 s

2.6 sLayout Shift 0.00002 2.504 sLayout Shift 0.00004 2.522 sLayout Shift 0.00005 2.537 sLayout Shift 0.00007 2.552 sLayout Shift 0.00009 2.567 sLayout Shift 0.00012 2.588 s

2.7 sLayout Shift 0.00015 2.609 sLayout Shift 0.00018 2.614 sLayout Shift 0.00049 2.647 sLayout Shift 0.00029 2.671 sLayout Shift 0.00033 2.692 sLayout Shift 0.00037 2.699 s

2.8 sLayout Shift 0.00042 2.715 sLayout Shift 0.00047 2.741 sLayout Shift 0.00051 2.760 sLayout Shift 0.00056 2.766 sLayout Shift 0.00062 2.783 sLayout Shift 0.00067 2.800 s

2.9 sLayout Shift 0.00073 2.814 sLayout Shift 0.00079 2.831 sLayout Shift 0.00082 2.847 sLayout Shift 0.00083 2.864 sLayout Shift 0.00084 2.881 s

3 sLayout Shift 0.00084 2.906 sLayout Shift 0.00085 2.918 sLayout Shift 0.00085 2.931 sLayout Shift 0.00086 2.947 sLayout Shift 0.00085 2.964 sLayout Shift 0.00084 2.980 s

3.1 sLayout Shift 0.00084 3.001 sLayout Shift 0.00083 3.020 sLayout Shift 0.00082 3.034 sLayout Shift 0.00079 3.048 sLayout Shift 0.00073 3.064 sLayout Shift 0.00067 3.080 sLayout Shift 0.00062 3.098 s

3.2 sLayout Shift 0.00056 3.113 sLayout Shift 0.00051 3.133 sLayout Shift 0.00047 3.147 sLayout Shift 0.00042 3.164 sLayout Shift 0.00037 3.181 sLayout Shift 0.00033 3.198 s

3.3 sLayout Shift 0.00029 3.216 sLayout Shift 0.00025 3.238 sLayout Shift 0.00021 3.255 sLayout Shift 0.00018 3.272 sLayout Shift 0.00015 3.296 s

3.4 sLayout Shift 0.00012 3.301 s

4.4 s

4.5 sCPU Long Task duration 338 ms

5 s

5.1 s

5.2 sVisual Complete 85% 5.134 sVisual Complete 95% 5.167 sVisual Complete 99% 5.200 s

5.8 sLast Visual Change 5.734 s

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on privacy and best practices. Tested using Coach-core version 8.1.1.

Coach score

• Total score 72
• Performance score 63
• Privacy score 93
• Best practice score 66

Performance advice (63)

Show/hide details

Title	Advice	Score
Avoid slowing down the critical rendering path (avoidRenderBlocking)	The page has 1 blocking requests and 3 in body parser blocking (3 JavaScript and 1 CSS).	70
Description: The critical rendering path is what the browser needs to do to start rendering the page. Every file requested inside of the head element will postpone the rendering of the page, because the browser need to do the request. Avoid loading JavaScript synchronously inside of the head (you should not need JavaScript to render the page), request files from the same domain as the main document (to avoid DNS lookups) and inline CSS for really fast rendering and a short rendering path.
Offenders: https://static-basket-01.wbbasket.ru/vol2/site/j/app.57a8a9d32d016065db5d.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/index.f1f596f0096cff0aecd6.js https://static-basket-01.wbbasket.ru/vol2/site/r/route-data.11-5-2.149fc07f.js
Don't scale images in the browser (avoidScalingImages)	The page has 32 images that are scaled more than 100 pixels. It would be better if those images are sent so the browser don't need to scale them.	0
Description: It's easy to scale images in the browser and make sure they look good in different devices, however that is bad for performance! Scaling images in the browser takes extra CPU time and will hurt performance on mobile. And the user will download extra kilobytes (sometimes megabytes) of data that could be avoided. Don't do that, make sure you create multiple version of the same image server-side and serve the appropriate one.
Offenders: https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/wb_koshelek_cyber_2880_1.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/cm_2880x336.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/wb_avto_2880.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/cm_2880x336.webp https://basket-10.wbbasket.ru/vol1586/part158601/158601628/images/c516x688/1.webp https://basket-10.wbbasket.ru/vol1453/part145307/145307309/images/c516x688/1.webp https://basket-04.wbbasket.ru/vol562/part56236/56236410/images/c516x688/1.webp https://basket-03.wbbasket.ru/vol367/part36741/36741261/images/c516x688/1.webp https://basket-14.wbbasket.ru/vol2106/part210642/210642607/images/c516x688/1.webp https://basket-02.wbbasket.ru/vol275/part27541/27541349/images/c516x688/1.webp https://basket-10.wbbasket.ru/vol1512/part151200/151200385/images/c516x688/1.webp https://basket-12.wbbasket.ru/vol1866/part186651/186651451/images/c516x688/1.webp https://basket-03.wbbasket.ru/vol312/part31299/31299196/images/c516x688/1.webp https://basket-04.wbbasket.ru/vol704/part70492/70492070/images/c516x688/1.webp https://basket-14.wbbasket.ru/vol2122/part212296/212296429/images/c516x688/1.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736973903248919176.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736974030678627447.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947074329243570.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947109689294031.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736957823707944880.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736957945736482763.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947136686720349.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947152407606781.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947166442619775.webp https://basket-10.wbbasket.ru/vol1479/part147935/147935373/images/c516x688/1.webp https://basket-07.wbbasket.ru/vol1105/part110592/110592443/images/c516x688/1.webp https://basket-17.wbbasket.ru/vol2740/part274046/274046966/images/c516x688/1.webp https://basket-04.wbbasket.ru/vol498/part49833/49833755/images/c516x688/1.webp https://basket-14.wbbasket.ru/vol2083/part208337/208337896/images/c516x688/1.webp https://basket-02.wbbasket.ru/vol144/part14453/14453278/images/c516x688/1.webp https://basket-02.wbbasket.ru/vol155/part15512/15512141/images/c516x688/1.webp https://basket-13.wbbasket.ru/vol1977/part197777/197777995/images/c516x688/1.webp
Inline CSS for faster first render (inlineCss)	The page has both inline CSS and CSS requests even though it uses a HTTP/2-ish connection. If you have many users on slow connections, it can be better to only inline the CSS. Run your own tests and check the waterfall graph to see what happens.	95
Description: In the early days of the Internet, inlining CSS was one of the ugliest things you can do. That has changed if you want your page to start rendering fast for your user. Always inline the critical CSS when you use HTTP/1 and HTTP/2 (avoid doing CSS requests that block rendering) and lazy load and cache the rest of the CSS. It is a little more complicated when using HTTP/2. Does your server support HTTP push? Then maybe that can help. Do you have a lot of users on a slow connection and are serving large chunks of HTML? Then it could be better to use the inline technique, becasue some servers always prioritize HTML content over CSS so the user needs to download the HTML first, before the CSS is downloaded.
Have a fast largest contentful paint (largestContentfulPaint)	You can add fetchPriority="high" to the image to increase the load priority in Chrome.	95
Description: Largest contentful paint is one of Google Web Vitals and reports the render time of the largest image or text block visible within the viewport, relative to when the page first started loading. To be fast according to Google, it needs to render before 2.5 seconds and results over 4 seconds is poor performance.
Avoid CPU Long Tasks (longTasks)	The page has 4 CPU long tasks with the total of 1.224 s. The total blocking time is 1.024 s . However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. Use Geckoprofiler for Firefox or Chromes tracelog to debug your long tasks.	20
Description: Long CPU tasks locks the thread. To the user this is commonly visible as a "locked up" page where the browser is unable to respond to user input; this is a major source of bad user experience on the web today. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. To debug you should use the Chrome timeline log and drag/drop it into devtools or use Firefox Geckoprofiler.
Offenders: self self self unknown
Avoid Frontend single point of failures (spof)	The page has 2 requests inside of the head that can cause a SPOF (single point of failure). Load them asynchronously or move them outside of the document head.	90
Description: A page can be stopped from loading in the browser if a single JavaScript, CSS, and in some cases a font, couldn't be fetched or is loading really slowly (the white screen of death). That is a scenario you really want to avoid. Never load 3rd-party components synchronously inside of the head tag.
Offenders: https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/spa/main-v3...939d1411bc28f.css https://static-basket-01.wbbasket.ru/vol2/site/app/generalPreloader.afe2ccfd4a81a33f9c85.css
Avoid extra requests by setting cache headers (cacheHeaders)	The page has 81 requests that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 3 MB the next access.	0
Description: The easiest way to make your page fast is to avoid doing requests to the server. Setting a cache header on your server response will tell the browser that it doesn't need to download the asset again during the configured cache time! Always try to set a cache time if the content doesn't change for every request.
Offenders: https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/spa/main-v3...939d1411bc28f.css https://static-basket-01.wbbasket.ru/vol2/site/j/app.57a8a9d32d016065db5d.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/index.f1f596f0096cff0aecd6.js https://static-basket-01.wbbasket.ru/vol2/site/r/route-data.11-5-2.149fc07f.js https://static-basket-01.wbbasket.ru/vol2/site/i/v3/header/logoWb.svg https://static-basket-01.wbbasket.ru/vol0/l/als-hauss-vf.woff2 https://static-basket-01.wbbasket.ru/vol2/site/t/jst/cookies.04c0780e.json https://static-basket-01.wbbasket.ru/vol1/global-payment/default-payment.json https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/orderService.b600e6433f4e5401b467.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/wbxOrderService.7f...8638480db88d91.js https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json.hash https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json.hash https://static-basket-01.wbbasket.ru/vol0/data/cargo-delivery-stores-v2.json https://static-basket-01.wbbasket.ru/vol0/data/stores-data.json https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json https://static-basket-01.wbbasket.ru/vol2/site/t/jst/menuLk.f345e8d9.json https://static-basket-01.wbbasket.ru/vol2/site/t/jst/footer.7db0dfb1.json https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/searchInput/suggest...9c84c5b67e60f0.js https://static-basket-01.wbbasket.ru/vol2/site/t/jst/spahome.0a080d7a.json https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/site/main-p...04219deb38d51.css https://static-basket-01.wbbasket.ru/vol2/site/j/swiper.71a66c124b97fcb6f3b4.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/banners.680bcaf2896488802062.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/lazyBlockLoader....90a678955c61ae.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.tooltip.fec060cd0acf69dad6b1.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.shortDeliver...c00e9b2863316d.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/models/home.a27b252df78aa600071e.js https://user-geo-data.wildberries.ru/get-geo-info...s.ru/get-geo-info https://static-basket-01.wbbasket.ru/vol2/site/t/jst/catalogCard.3ce1eda2.json https://static-basket-01.wbbasket.ru/vol2/site/t/jst/catalogCore.5e601ea7.json https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.searchTags.c...ec4113398294c9.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog_v2/goodsCat...a42e6358674f4d.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog/xCatalogDat...ad8cd5218260f3.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog_v2/provider...42f1b52ab5c1d9.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/userInfo/userInfoRe...f047a15e0bfd21.js https://www.wildberries.ru/webapi/api/home/seo https://static-basket-01.wbbasket.ru/vol2/site/i/v3/apps/qr-apps.svg https://banners-website.wildberries.ru/public/v1/banners...public/v1/banners https://www.wildberries.ru/manifestv2.json https://static-basket-01.wbbasket.ru/vol0/data/main-menu-ru-ru-v3.json https://static-basket-01.wbbasket.ru/vol2/site/t/jst/menuTopTmpl.dac4c2eb.json https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/icon.svg https://catalog.wb.ru/menu/v11/api?locale=ru&lang=ru&id=131289&collapse&dest=-1255987 https://www.wildberries.ru/favicon.ico https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/parseToken/parseTo...2b5346cf07bc0e.js https://www.wildberries.ru/android-icon-144x144.png https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1735398793863067980.webp https://pow.wildberries.ru/api/v1/js-settings https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/cm_2880x336.webp https://static-basket-01.wbbasket.ru/vol2/site/i/blank.gif https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/wb_koshelek_cyber_2880_1.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/2880_domoy-bolshuyu-pokupku.webp https://static-basket-01.wbbasket.ru/vol2/site/app/generalPreloader-component.96...4adcf8a9bfba39.js https://static-basket-01.wbbasket.ru/vol2/site/app/react-vendors.9eb77fb49b103b278192.js https://static-basket-01.wbbasket.ru/vol2/site/app/generalPreloader.afe2ccfd4a81a33f9c85.css https://static-basket-01.wbbasket.ru/vol2/site/app/react-app.aa82ec4ee9ef7a7968e0.js https://recom.wb.ru/personal/ru/common/v5/search.../common/v5/search https://recom.wb.ru/personal/ru/common/v5/search.../common/v5/search https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/feedbacks/feedback...d8483db8a16cc8.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/lazyBlockLoader.c66511f48cf5a64f33e7.js https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736973903248919176.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736974030678627447.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947074329243570.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947109689294031.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736957823707944880.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736957945736482763.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947136686720349.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947152407606781.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947166442619775.webp https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1736947907549431960.webp https://static-basket-01.wbbasket.ru/vol2/site/t/jst/onlineChatPopup.5577172b.json https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/modules/popups/ch...8fcf03d129d63.css https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/onlineChat/onlineCh...7796a70708408c.js https://static-basket-01.wbbasket.ru/vol2/site/t/jst/onlineChat.7a288e54.json https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/modules/popups/ch...1d6fe85ff2d74.css https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.contextMenu....696f23cf02cb02.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/onlineChat/onlineCh...47221dfe5e51e0.js https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/storageService.bf4066dc9efb99da67b8.js https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://static-basket-01.wbbasket.ru/vol2/site/j/performanceAnalytics.f8c3dc1523537761b00d.js
Long cache headers is good (cacheHeadersLong)	The page has 23 requests that have a shorter cache time than 30 days (but still a cache time).	77
Description: Setting a cache header is good. Setting a long cache header (at least 30 days) is even better beacause then it will stay long in the browser cache. But what do you do if that asset change? Rename it and the browser will pick up the new version.
Offenders: https://a.wb.ru/sdk/sdk.js https://pow.wildberries.ru/scripts/d.js?7eec71a7 https://pow.wildberries.ru/scripts/wasm_exec.js?5c7aa861 https://pow.wildberries.ru/scripts/solve.wasm?7b450d09 https://basket-10.wbbasket.ru/vol1586/part158601/158601628/images/c516x688/1.webp https://basket-10.wbbasket.ru/vol1453/part145307/145307309/images/c516x688/1.webp https://basket-04.wbbasket.ru/vol562/part56236/56236410/images/c516x688/1.webp https://basket-03.wbbasket.ru/vol367/part36741/36741261/images/c516x688/1.webp https://basket-14.wbbasket.ru/vol2106/part210642/210642607/images/c516x688/1.webp https://basket-02.wbbasket.ru/vol275/part27541/27541349/images/c516x688/1.webp https://basket-10.wbbasket.ru/vol1512/part151200/151200385/images/c516x688/1.webp https://basket-12.wbbasket.ru/vol1866/part186651/186651451/images/c516x688/1.webp https://basket-03.wbbasket.ru/vol312/part31299/31299196/images/c516x688/1.webp https://basket-04.wbbasket.ru/vol704/part70492/70492070/images/c516x688/1.webp https://basket-14.wbbasket.ru/vol2122/part212296/212296429/images/c516x688/1.webp https://basket-10.wbbasket.ru/vol1479/part147935/147935373/images/c516x688/1.webp https://basket-07.wbbasket.ru/vol1105/part110592/110592443/images/c516x688/1.webp https://basket-17.wbbasket.ru/vol2740/part274046/274046966/images/c516x688/1.webp https://basket-04.wbbasket.ru/vol498/part49833/49833755/images/c516x688/1.webp https://basket-14.wbbasket.ru/vol2083/part208337/208337896/images/c516x688/1.webp https://basket-02.wbbasket.ru/vol144/part14453/14453278/images/c516x688/1.webp https://basket-02.wbbasket.ru/vol155/part15512/15512141/images/c516x688/1.webp https://basket-13.wbbasket.ru/vol1977/part197777/197777995/images/c516x688/1.webp
Total CSS size shouldn't be too big (cssSize)	The total CSS transfer size is 97.5 kB and uncompressed size is 646.4 kB. That is big and the CSS could most probably be smaller.	50
Description: Delivering a massive amount of CSS to the browser is not the best thing you can do, because it means more work for the browser when parsing the CSS against the HTML and that makes the rendering slower. Try to send only the CSS that is used on that page. And make sure to remove CSS rules when they aren't used anymore.
Offenders: URL Transfer size Content size https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/spa/main-v3...939d1411bc28f.css 76.5 KB 496.5 KB https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/site/main-p...04219deb38d51.css 5.8 KB 42.9 KB https://static-basket-01.wbbasket.ru/vol2/site/app/generalPreloader.afe2ccfd4a81a33f9c85.css 908 B 6.2 KB https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/modules/popups/ch...8fcf03d129d63.css 10.4 KB 76.7 KB https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/modules/popups/ch...1d6fe85ff2d74.css 1.7 KB 9.0 KB
The favicon should be small and cacheable (favicon)	The favicon size is 16 kB bytes. That's quite big, can you make it smaller? The favicon has no cache time.	0
Description: It is easy to make the favicon big but please avoid doing that, because every browser will then perform an unnecessarily large download. And make sure the cache headers are set for a long time for the favicon. It is easy to miss since it's another content type.
Offenders: https://www.wildberries.ru/favicon.ico
Total image size shouldn't be too big (imageSize)	The page total image size is 2.7 MB. It's really big. Is the page using the right format for the images? Can they be lazy loaded? Are they compressed as good as they can be? Make them smaller by using https://imageoptim.com/.	50
Description: Avoid having too many large images on the page. The images will not affect the first paint of the page, but it will eat bandwidth for the user.
Total JavaScript size shouldn't be too big (javascriptSize)	The total JavaScript transfer size is 519.7 kB and the uncompressed size is 1.9 MB. This is totally crazy! There is really room for improvement here.	0
Description: A lot of JavaScript often means you are downloading more than you need. How complex is the page and what can the user do on the page? Do you use multiple JavaScript frameworks?
Offenders: URL Transfer size Content size https://static-basket-01.wbbasket.ru/vol2/site/j/app.57a8a9d32d016065db5d.js 64.8 KB 190.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/index.f1f596f0096cff0aecd6.js 198.7 KB 803.3 KB https://static-basket-01.wbbasket.ru/vol2/site/r/route-data.11-5-2.149fc07f.js 18.1 KB 113.8 KB https://a.wb.ru/sdk/sdk.js 2.1 KB 5.8 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/orderService.b600e6433f4e5401b467.js 8.6 KB 26.0 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/wbxOrderService.7f...8638480db88d91.js 11.3 KB 36.3 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/searchInput/suggest...9c84c5b67e60f0.js 1.6 KB 3.9 KB https://static-basket-01.wbbasket.ru/vol2/site/j/swiper.71a66c124b97fcb6f3b4.js 26.7 KB 103.4 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/banners.680bcaf2896488802062.js 4.1 KB 16.0 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/lazyBlockLoader....90a678955c61ae.js 480 B 780 B https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.tooltip.fec060cd0acf69dad6b1.js 2.5 KB 8.8 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.shortDeliver...c00e9b2863316d.js 1.6 KB 6.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/models/home.a27b252df78aa600071e.js 7.3 KB 24.3 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.searchTags.c...ec4113398294c9.js 526 B 766 B https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog_v2/goodsCat...a42e6358674f4d.js 20.8 KB 96.3 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog/xCatalogDat...ad8cd5218260f3.js 887 B 3.4 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog_v2/provider...42f1b52ab5c1d9.js 2.3 KB 7.1 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/userInfo/userInfoRe...f047a15e0bfd21.js 1.3 KB 4.3 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/parseToken/parseTo...2b5346cf07bc0e.js 23.4 KB 75.1 KB https://pow.wildberries.ru/scripts/d.js?7eec71a7 21.1 KB 59.0 KB https://static-basket-01.wbbasket.ru/vol2/site/app/generalPreloader-component.96...4adcf8a9bfba39.js 318 B 236 B https://static-basket-01.wbbasket.ru/vol2/site/app/react-vendors.9eb77fb49b103b278192.js 40.5 KB 132.9 KB https://static-basket-01.wbbasket.ru/vol2/site/app/react-app.aa82ec4ee9ef7a7968e0.js 7.9 KB 21.2 KB https://pow.wildberries.ru/scripts/wasm_exec.js?5c7aa861 5.2 KB 15.7 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/feedbacks/feedback...d8483db8a16cc8.js 859 B 1.7 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/lazyBlockLoader.c66511f48cf5a64f33e7.js 1.0 KB 2.3 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/onlineChat/onlineCh...7796a70708408c.js 11.8 KB 38.2 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.contextMenu....696f23cf02cb02.js 711 B 1.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/onlineChat/onlineCh...47221dfe5e51e0.js 8.7 KB 28.9 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/storageService.bf4066dc9efb99da67b8.js 6.0 KB 19.8 KB https://static-basket-01.wbbasket.ru/vol2/site/j/performanceAnalytics.f8c3dc1523537761b00d.js 6.4 KB 18.9 KB
Avoid using incorrect mime types (mimeTypes)	The page has 9 misconfigured mime types.	91
Description: It's not a great idea to let browsers guess content types (content sniffing), in some cases it can actually be a security risk.
Offenders: https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json.hash https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json.hash https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json https://pow.wildberries.ru/scripts/solve.wasm?7b450d09 https://www.wildberries.ru/webapi/stats/events https://points.wb.ru/points-users-api/api/v1/w/promotion/available https://points.wb.ru/points-users-api/api/v1/w/promotion/available https://www.wildberries.ru/webapi/stats/events
Make each CSS response small (optimalCssSize)	https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/spa/main-v3.2be9cf4939d1411bc28f.css size is 78.3 kB (78288) and that is bigger than the limit of 14.5 kB. Try to make the CSS files fit into 14.5 KB.	90
Description: Make CSS responses small to fit into the magic number TCP window size of 14.5 KB. The browser can then download the CSS faster and that will make the page start rendering earlier.
Offenders: URL Transfer size Content size https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/spa/main-v3...939d1411bc28f.css 76.5 KB 496.5 KB
Total page size shouldn't be too big (pageSize)	The page total transfer size is 4 MB, which is more than the coach limit of 2 MB. That is really big and you need to make it smaller.	0
Description: Avoid having pages that have a transfer size over the wire of more than 2 MB (desktop) and 1 MB (mobile) because that is really big and will hurt performance and will make the page expensive for the user if she/he pays for the bandwidth.
Offenders: URL Transfer size Content size https://www.wildberries.ru/ 8.6 KB 30.5 KB https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/spa/main-v3...939d1411bc28f.css 76.5 KB 496.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/app.57a8a9d32d016065db5d.js 64.8 KB 190.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/index.f1f596f0096cff0aecd6.js 198.7 KB 803.3 KB https://static-basket-01.wbbasket.ru/vol2/site/r/route-data.11-5-2.149fc07f.js 18.1 KB 113.8 KB https://static-basket-01.wbbasket.ru/vol2/site/i/v3/header/logoWb.svg 1.2 KB 2.5 KB https://static-basket-01.wbbasket.ru/vol0/l/als-hauss-vf.woff2 134.5 KB 134.4 KB https://static-basket-01.wbbasket.ru/vol2/site/t/jst/cookies.04c0780e.json 423 B 536 B https://a.wb.ru/sdk/sdk.js 2.1 KB 5.8 KB https://static-basket-01.wbbasket.ru/vol1/global-payment/default-payment.json 346 B 324 B https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/orderService.b600e6433f4e5401b467.js 8.6 KB 26.0 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/wbxOrderService.7f...8638480db88d91.js 11.3 KB 36.3 KB https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json.hash 0 b 0 b https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json.hash 0 b 0 b https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json.hash 169 B 16 B https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json.hash 169 B 16 B https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json 0 b 0 b https://static-basket-01.wbbasket.ru/vol0/data/cargo-delivery-stores-v2.json 22.2 KB 114.5 KB https://static-basket-01.wbbasket.ru/vol0/data/stores-data.json 118.0 KB 2.3 MB https://static-basket-01.wbbasket.ru/vol0/data/settings-front.json 2.0 KB 4.9 KB https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json 0 b 0 b https://static-basket-01.wbbasket.ru/vol0/data/promotion-creatives.json 735 B 1.4 KB https://static-basket-01.wbbasket.ru/vol2/site/t/jst/menuLk.f345e8d9.json 1.1 KB 7.0 KB https://static-basket-01.wbbasket.ru/vol2/site/t/jst/footer.7db0dfb1.json 2.4 KB 12.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/searchInput/suggest...9c84c5b67e60f0.js 1.6 KB 3.9 KB https://static-basket-01.wbbasket.ru/vol2/site/t/jst/spahome.0a080d7a.json 2.3 KB 9.6 KB https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/views/site/main-p...04219deb38d51.css 5.8 KB 42.9 KB https://static-basket-01.wbbasket.ru/vol2/site/j/swiper.71a66c124b97fcb6f3b4.js 26.7 KB 103.4 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/banners.680bcaf2896488802062.js 4.1 KB 16.0 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/lazyBlockLoader....90a678955c61ae.js 480 B 780 B https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.tooltip.fec060cd0acf69dad6b1.js 2.5 KB 8.8 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.shortDeliver...c00e9b2863316d.js 1.6 KB 6.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/models/home.a27b252df78aa600071e.js 7.3 KB 24.3 KB https://www.wildberries.ru/webapi/stats/pageview 666 B 38 B https://a.wb.ru/e/user_id...a.wb.ru/e/user_id 0 b 0 b https://a.wb.ru/e/session_start...u/e/session_start 0 b 0 b https://a.wb.ru/e/Alert_S...a.wb.ru/e/Alert_S 0 b 0 b https://a.wb.ru/e/pageview....wb.ru/e/pageview 0 b 0 b https://user-geo-data.wildberries.ru/get-geo-info...s.ru/get-geo-info 626 B 369 B https://static-basket-01.wbbasket.ru/vol2/site/t/jst/catalogCard.3ce1eda2.json 2.8 KB 9.8 KB https://static-basket-01.wbbasket.ru/vol2/site/t/jst/catalogCore.5e601ea7.json 4.2 KB 16.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.searchTags.c...ec4113398294c9.js 526 B 766 B https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog_v2/goodsCat...a42e6358674f4d.js 20.8 KB 96.3 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog/xCatalogDat...ad8cd5218260f3.js 887 B 3.4 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/catalog_v2/provider...42f1b52ab5c1d9.js 2.3 KB 7.1 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/userInfo/userInfoRe...f047a15e0bfd21.js 1.3 KB 4.3 KB https://www.wildberries.ru/webapi/api/home/seo 2.9 KB 6.9 KB https://a.wb.ru/e/Screen_V....wb.ru/e/Screen_V 0 b 0 b https://static-basket-01.wbbasket.ru/vol2/site/i/v3/apps/qr-apps.svg 7.2 KB 51.1 KB https://banners-website.wildberries.ru/public/v1/banners...public/v1/banners 6.9 KB 46.0 KB https://www.wildberries.ru/manifestv2.json 982 B 1.5 KB https://static-basket-01.wbbasket.ru/vol0/data/main-menu-ru-ru-v3.json 71.7 KB 484.1 KB https://static-basket-01.wbbasket.ru/vol2/site/t/jst/menuTopTmpl.dac4c2eb.json 1.5 KB 6.8 KB https://a.wb.ru/e/pageview....wb.ru/e/pageview 0 b 0 b https://www.wildberries.ru/webapi/stats/pageview 665 B 38 B https://www.wildberries.ru/webapi/api/home/seo 2.9 KB 6.9 KB https://a.wb.ru/e/Screen_V....wb.ru/e/Screen_V 0 b 0 b https://www.wildberries.ru/webapi/personalinfo 1.2 KB 627 B https://www.wildberries.ru/icon.svg 1.3 KB 1.5 KB https://catalog.wb.ru/menu/v11/api?locale=ru&lang=ru&id=131289&collapse&dest=-1255987 35.4 KB 134.6 KB https://www.wildberries.ru/favicon.ico 15.6 KB 15.0 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/parseToken/parseTo...2b5346cf07bc0e.js 23.4 KB 75.1 KB https://www.wildberries.ru/android-icon-144x144.png 16.7 KB 16.1 KB https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/adsf/1735398793863067980.webp 30.0 KB 29.9 KB https://pow.wildberries.ru/api/v1/js-settings 746 B 122 B https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/cm_2880x336.webp 199.7 KB 199.6 KB https://static-basket-01.wbbasket.ru/vol2/site/i/blank.gif 164 B 49 B https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/wb_koshelek_cyber_2880_1.webp 71.3 KB 71.1 KB 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https://static-basket-01.wbbasket.ru/vol2/site/s/desktop/style/modules/popups/ch...1d6fe85ff2d74.css 1.7 KB 9.0 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/customTags/spa.contextMenu....696f23cf02cb02.js 711 B 1.5 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/modules/onlineChat/onlineCh...47221dfe5e51e0.js 8.7 KB 28.9 KB https://static-basket-01.wbbasket.ru/vol2/site/j/spa/services/storageService.bf4066dc9efb99da67b8.js 6.0 KB 19.8 KB https://chat-prod.wildberries.ru/api/support/v1/unauth/messages 0 b 0 b https://chat-prod.wildberries.ru/api/support/v1/unauth/messages 585 B 3 B https://www.wildberries.ru/webapi/stats/events N/A 0 b https://static-basket-01.wbbasket.ru/vol2/site/j/performanceAnalytics.f8c3dc1523537761b00d.js 6.4 KB 18.9 KB https://a.wb.ru/e/performance....ru/e/performance 0 b 0 b https://a.wb.ru/e/performance....ru/e/performance 0 b 0 b https://a.wb.ru/e/performance....ru/e/performance 0 b 0 b https://a.wb.ru/e/performance....ru/e/performance 0 b 0 b https://a.wb.ru/e/performance....ru/e/performance 0 b 0 b https://a.wb.ru/e/performance....ru/e/performance 0 b 0 b
Don't use private headers on static content (privateAssets)	The page has 8 requests with private headers. Make sure that the assets really should be private and only used by one user. Otherwise, make it cacheable for everyone.	20
Description: If you set private headers on content, that means that the content are specific for that user. Static content should be able to be cached and used by everyone. Avoid setting the cache header to private.
Offenders: https://www.wildberries.ru/ https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/manifestv2.json https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/icon.svg https://www.wildberries.ru/android-icon-144x144.png https://pow.wildberries.ru/api/v1/js-settings https://chat-prod.wildberries.ru/api/support/v1/unauth/messages

Best practice advice (66)

Show/hide details

Title	Advice	Score
Cumulative Layout Shift (cumulativeLayoutShift)	You have a cumulative layout shift score (0.1119) that needs improvements. It is in the Google Web Vitals needs improvement range, shift higher than 0.1. You should manually check the filmstrip or video and check if it will affect the user.	50
Description: Cumulative Layout Shift measures the sum total of all individual layout shift scores for unexpected layout shift that occur. The metric is measuring visual stability by quantify how often users experience unexpected layout shifts. It is one of Google Web Vitals.
Meta description (metaDescription)	The meta description is too long. It has 162 characters, the recommended max is 155	50
Description: Use a page description to make the page more relevant to search engines.
Page title (pageTitle)	The title is too long by 19 characters. The recommended max is 60	50
Description: Use a title to make the page more relevant to search engines.
Avoid too many third party requests (thirdParty)	The page do more requests to third party domains (129 requests and 3.8 MB) then first party (22 requests and 223.5 kB). The page transfer more bytes from third party domains (3.8 MB) then first party (223.5 kB). The regex .*wildberries.* was used to calculate first/third party requests.	0
Description: Do not load most of your content from third party URLs.
Avoid unnecessary headers (unnecessaryHeaders)	There are 21 responses that sets both a max-age and expires header. There are 17 responses that sets a pragma no-cache header (that is a request header). There are 60 responses that sets a server header.	2
Description: Do not send headers that you don't need. We look for p3p, cache-control and max-age, pragma, server and x-frame-options headers. Have a look at Andrew Betts - Headers for Hackers talk as a guide https://www.youtube.com/watch?v=k92ZbrY815c or read https://www.fastly.com/blog/headers-we-dont-want.
Offenders: https://www.wildberries.ru/ https://www.wildberries.ru/ https://www.wildberries.ru/ https://a.wb.ru/sdk/sdk.js https://a.wb.ru/sdk/sdk.js https://www.wildberries.ru/webapi/stats/pageview https://www.wildberries.ru/webapi/stats/pageview https://www.wildberries.ru/webapi/stats/pageview https://a.wb.ru/e/user_id...a.wb.ru/e/user_id https://a.wb.ru/e/session_start...u/e/session_start https://a.wb.ru/e/Alert_S...a.wb.ru/e/Alert_S https://a.wb.ru/e/pageview....wb.ru/e/pageview https://user-geo-data.wildberries.ru/get-geo-info...s.ru/get-geo-info https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/webapi/api/home/seo https://a.wb.ru/e/Screen_V....wb.ru/e/Screen_V https://banners-website.wildberries.ru/public/v1/banners...public/v1/banners https://www.wildberries.ru/manifestv2.json https://www.wildberries.ru/manifestv2.json https://www.wildberries.ru/manifestv2.json https://a.wb.ru/e/pageview....wb.ru/e/pageview https://www.wildberries.ru/webapi/stats/pageview https://www.wildberries.ru/webapi/stats/pageview https://www.wildberries.ru/webapi/stats/pageview https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/webapi/api/home/seo https://www.wildberries.ru/webapi/api/home/seo https://a.wb.ru/e/Screen_V....wb.ru/e/Screen_V https://www.wildberries.ru/webapi/personalinfo https://www.wildberries.ru/webapi/personalinfo https://www.wildberries.ru/webapi/personalinfo https://www.wildberries.ru/icon.svg https://www.wildberries.ru/icon.svg https://www.wildberries.ru/icon.svg https://catalog.wb.ru/menu/v11/api?locale=ru&lang=ru&id=131289&collapse&dest=-1255987 https://www.wildberries.ru/favicon.ico https://www.wildberries.ru/favicon.ico https://www.wildberries.ru/favicon.ico https://www.wildberries.ru/android-icon-144x144.png https://www.wildberries.ru/android-icon-144x144.png https://www.wildberries.ru/android-icon-144x144.png https://pow.wildberries.ru/api/v1/js-settings https://pow.wildberries.ru/api/v1/js-settings https://pow.wildberries.ru/api/v1/js-settings https://a.wb.ru/e/Banner_S....wb.ru/e/Banner_S https://a.wb.ru/e/Banner_S....wb.ru/e/Banner_S https://pow.wildberries.ru/scripts/d.js?7eec71a7 https://pow.wildberries.ru/scripts/d.js?7eec71a7 https://pow.wildberries.ru/api/v1/client/get-task?client_id=c810af55-d5e0-41dc-960b-33f809d7e6de https://pow.wildberries.ru/api/v1/client/get-task?client_id=c810af55-d5e0-41dc-960b-33f809d7e6de https://pow.wildberries.ru/api/v1/client/get-task?client_id=c810af55-d5e0-41dc-960b-33f809d7e6de https://pow.wildberries.ru/scripts/wasm_exec.js?5c7aa861 https://pow.wildberries.ru/scripts/wasm_exec.js?5c7aa861 https://pow.wildberries.ru/scripts/solve.wasm?7b450d09 https://pow.wildberries.ru/scripts/solve.wasm?7b450d09 https://www.wildberries.ru/webapi/stats/events https://www.wildberries.ru/webapi/stats/events https://www.wildberries.ru/webapi/stats/events https://pow.wildberries.ru/api/v1/client/verify-answer https://pow.wildberries.ru/api/v1/client/verify-answer https://pow.wildberries.ru/api/v1/client/verify-answer https://recom.wb.ru/personal/ru/common/v5/search.../common/v5/search https://recom.wb.ru/personal/ru/common/v5/search.../common/v5/search https://recom.wb.ru/personal/ru/common/v5/search.../common/v5/search https://recom.wb.ru/personal/ru/common/v5/search.../common/v5/search https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://a.wb.ru/e/Goods_Mark_S...ru/e/Goods_Mark_S https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://points.wb.ru/points-users-api/api/v1/w/promotion/available https://a.wb.ru/e/Goods_Mark_S...ru/e/Goods_Mark_S https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://points.wb.ru/points-users-api/api/v1/w/promotion/available https://a.wb.ru/e/Goods_Mark_S...ru/e/Goods_Mark_S https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://a.wb.ru/e/Goods_Mark_S...ru/e/Goods_Mark_S https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://a.wb.ru/e/Goods_Mark_S...ru/e/Goods_Mark_S https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://a.wb.ru/e/ec...ps://a.wb.ru/e/ec https://points.wb.ru/points-users-api/api/v1/w/promotion/available https://points.wb.ru/points-users-api/api/v1/w/promotion/available https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://chat-prod.wildberries.ru/api/support/v1/unauth/messages https://www.wildberries.ru/webapi/stats/events https://www.wildberries.ru/webapi/stats/events https://www.wildberries.ru/webapi/stats/events https://a.wb.ru/e/performance....ru/e/performance https://a.wb.ru/e/performance....ru/e/performance https://a.wb.ru/e/performance....ru/e/performance https://a.wb.ru/e/performance....ru/e/performance https://a.wb.ru/e/performance....ru/e/performance https://a.wb.ru/e/performance....ru/e/performance

Privacy advice (93)

Show/hide details

Title	Advice	Score
Set a referrer-policy header to make sure you do not leak user information. (referrerPolicyHeader)	Set a referrer-policy header to make sure you do not leak user information.	0
Description: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites. https://scotthelme.co.uk/a-new-security-header-referrer-policy/.
Offenders: https://www.wildberries.ru/
Set a strict transport header to make sure the user always use HTTPS. (strictTransportSecurityHeader)	A strict transport header is set but miss out on setting includeSubDomains	90
Description: The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) lets a web site tell browsers that it should only be accessed using HTTPS, instead of using HTTP. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security.

Page info

Page info
Title	Интернет-магазин Wildberries: широкий ассортимент товаров - скидки каждый день!
Width	1904
Height	3595
DOM elements	3718
Avg DOM depth	14
Max DOM depth	20
Iframes	0
Script tags	2062
Local storage	243.0 KB
Session storage	224 B
Network Information API	4g

Resource Hints
preconnect
https://static-basket-01.wbbasket.ru/
https://splitter.wb.ru/
https://wb.ru/

Technologies used to build the page.

Data collected using Wappalyzer version 6.10.66. With updated code from Webappanalyzer 2024-12-27. Use --browsertime.firefox.includeResponseBodies htmlor --browsertime.chrome.includeResponseBodies htmlto help Wappalyzer find more information about technologies used.

Technology	Confidence	Category
Nginx 1.24.0	100	Web servers Reverse proxies
HSTS	100	Security
HTTP/3	100	Miscellaneous

Data from run 2

Visual Metrics

Browser Metrics

Largest Contentful Paint

When in time the page main content is rendered (collected using the Largest Contentful Paint API). Read more about Largest Contentful Paint.

Element type	IMG
Element/tag	<img src="https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/cm_2880x336.webp" data-src-pb="https://static-basket-01.wbbasket.ru/vol1/crm-bnrs/bners1/cm_2880x336.webp" class="swiper-lazy swiper-lazy-loaded" name="banner_61245a59-2a55-4437-89fc-84bd4a0f4069" alt="Киберпонедельник" width="1440" height="168">
Render time	2.289 s
Elements that needed recalculate style before LCP	1779
Time spent in recalculate style before LCP	105.919 ms
Load time	2.289 s
URL	https://static-baske.../cm_2880x336.webp
Size (width*height)	241920
DOM path
div:eq(0) > main#body-layout > div#mainContainer > div#app > div:eq(1) > div > div:eq(1) > div > div > div:eq(0) > div:eq(1) > div > a > div > img> div:eq(0) > main#body-layout > div#mainContainer > div#app > div:eq(1) > div > div:eq(1) > div > div > div:eq(0) > div:eq(1) > div > a > div > img>

The largest contentful paint is highlighted in the image. If no element is highlighted the element was removed before the screenshot or the LCP API couldn't find the element.

The Largest Contentful Paint API highlighted this image as a part of the LCP.

Detected Cumulative Layout Shift

0.10535 cumulative layout shift collected from the Cumulative Layout Shift API.

These HTML elements contribute most to the Cumulative Layout Shifts of the page. The higher score, the more layout shift.

Score	HTML Element
0.07746	<div id="mainContainer" class="main__container"></div>
body > div:eq(0) > main#body-layout > div#mainContainer
0.00300
0.00115
0.00086
0.00085
0.00085
0.00085
0.00084
0.00084
0.00084
0.00084
0.00083
0.00083
0.00082
0.00082
0.00079
0.00079
0.00073
0.00073
0.00067
0.00067
0.00062
0.00062
0.00056
0.00056
0.00051
0.00051
0.00049
0.00047
0.00047
0.00042
0.00042
0.00037
0.00037
0.00033
0.00033
0.00029
0.00029
0.00025
0.00021
0.00018
0.00018
0.00015
0.00015
0.00012
0.00012
0.00009
0.00007
0.00005
0.00004
0.00002

The elements that have shifted place is highlighted in the image (that have a higher value than 0.01). If the element shifted outside of the viewport, you will not see it there. It can be hard to understand what content that has shifted, if that's the case, checkout the video or the filmstrip of the run.

Long Animation Frames

Read more about the Long Animation Frames API here here.

The top 10 longest animation frames entries

Server timings

There are no Server Timings.

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

There are no custom extra metrics from scripting.

PageXray

How the page is built.

Largest assets on the page (by transfer size)

Requests and sizes per content type

Data per domain

Expires and last modified statistics

Requests loaded after onLoad event

Included requests done after load event end.

Requests loaded after onContentLoad

Includes requests done after DOM content loaded.

Render blocking requests

Render blocking information directly from Chrome.

Render information

CPU

Download the Chrome trace log and drag and drop it into Developer Tools / Performance in Chrome.

Long Tasks

Collected using the Long Task API. A long task is a task that take 50 milliseconds or more.

CPU last long task happened at 4.491 s

Individual Long Tasks

CPU time spent

Calculated using Tracium.

Time spent per request

CPU time spent

Third party

Third party requests categorised by Third party web version 0.26.2.

Unmatched third party domains

Here's a list of domains that didn't match any tool in Third party web. If you are sure they are third party domains, please do a PR to that project. You can also fine tune the list using --firstParty.

First party requests and sizes per content type

Calculated using .*wildberries.* (use --firstParty to configure).

Third party requests and sizes per content type

Axe

Axe is an accessibility testing engine for websites and other HTML-based user interfaces. Tested using axe-core version 4.10.2. Read more about axe-core .

Violations

Median number of violations for all the runs. Check each individual run to see all the violations.

| loadingExperience ALL | | originLoadingExperience ALL | | 

CrUx

Chrome User Experience Report (CrUx) is powered by real user measurement across the public web, aggregated from users who have opted-in to syncing their browsing history, have not set up a Sync passphrase, and have usage statistic reporting enabled and is using Chrome.

The CrUx data has four different buckets (form factor) depending on device: DESKTOP, PHONE, TABLET and ALL. You can choose which data to get with --crux.formFactor.

Over the last 30 days, this is the field data for this page for Chrome users.

Form Factor ALL

Data collected between 2024-12-19 and 2025-1-15

Form factors

Navigation types

Distribution

All pages served from this origin

This is a summary of all pages served from this origin over the last 30 days for Chrome users.

Form Factor ALL

Data collected between 2024-12-19 and 2025-1-15

Form factors

Navigation types

Distribution