Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
/coub_storage/channel/cw_avatar/b09c2cd4b67/ff07e954e22d6...	0.0 ms	83.7 KiB
/coub_storage/coub/simple/cw_timeline_pic/77be9313487/b7b...	0.0 ms	80.5 KiB
/coub_storage/coub/simple/cw_timeline_pic/af5cd35379e/9a7...	0.0 ms	69.8 KiB
mc.yandex.ru/metrika/tag.js	3600.0 s	85.5 KiB
/coub_storage/coub/simple/cw_timeline_pic/cddaa16a059/5c6...	0.0 ms	58.8 KiB
/coub_storage/coub/simple/cw_timeline_pic/c878b409474/4ce...	0.0 ms	54.5 KiB
/coub_storage/coub/simple/cw_timeline_pic/e128866124e/a9d...	0.0 ms	39.8 KiB
/coub_storage/channel/cw_avatar/1343fbc4b57/80bdfe6728dde...	0.0 ms	36.5 KiB
/coub_storage/coub/simple/cw_timeline_pic/146c48b947e/015...	0.0 ms	34.6 KiB
/coub_storage/coub/simple/cw_timeline_pic/9b34e45e787/7b0...	0.0 ms	33.8 KiB
/coub_storage/coub/simple/cw_timeline_pic/23e2e205965/6ed...	0.0 ms	31.9 KiB
/coub_storage/channel/cw_avatar/b167cf416ae/e7e9bad8a4158...	0.0 ms	28.2 KiB
/coub_storage/channel/cw_avatar/b977c9ebe89/d397cc0b7ec0f...	0.0 ms	26.8 KiB
/coub_storage/coub/simple/cw_timeline_pic/e1e3dd94953/be0...	0.0 ms	23.8 KiB
/coub_storage/channel/cw_avatar/3aa6b56f7c5/fb8c358447513...	0.0 ms	14.5 KiB
/coub_storage/channel/cw_avatar/16f048d235f/2229a076cfa5a...	0.0 ms	13.5 KiB
/coub_storage/coub/simple/cw_timeline_pic/aca94473132/060...	0.0 ms	12.1 KiB
/coub_storage/channel/cw_avatar/d98c74c718d/550a91d1198b5...	0.0 ms	11.7 KiB
/coub_storage/channel/cw_avatar/e81abddfed3/240b107d47753...	0.0 ms	10.3 KiB
/coub_storage/category/cw_image/49fb773a80c/efee899b14f85...	0.0 ms	10.0 KiB
/coub_storage/channel/cw_avatar/cd1d0feabf3/3121413390777...	0.0 ms	9.8 KiB
/coub_storage/category/cw_image/d7b917ae565/55b6fc9b6407f...	0.0 ms	9.7 KiB
/coub_storage/category/cw_image/f582005153c/999b059f60e79...	0.0 ms	9.4 KiB
/coub_storage/category/cw_image/dcda24f72f3/076e0f1bc1028...	0.0 ms	9.1 KiB
/coub_storage/category/cw_image/93ae83fbc3f/4d90453882a0f...	0.0 ms	9.0 KiB
/coub_storage/category/cw_image/60432c0f1f4/5d35698dc76c5...	0.0 ms	8.9 KiB
/coub_storage/category/cw_image/f8ede745da4/2e6c3a22d04db...	0.0 ms	8.7 KiB
/coub_storage/category/cw_image/d7afb96f274/3e8dad0b674f8...	0.0 ms	8.3 KiB
/coub_storage/category/cw_image/dda6b36d2fb/9ae8ba82060e5...	0.0 ms	8.3 KiB
/coub_storage/category/cw_image/79d6e4a3e73/c0b7416c30391...	0.0 ms	8.2 KiB
/coub_storage/category/cw_image/bc49636b5e9/9d819c4215f13...	0.0 ms	8.0 KiB
/coub_storage/category/cw_image/a4b57370b28/3c9d9a8cf4246...	0.0 ms	8.0 KiB
/coub_storage/category/cw_image/e705818f6da/2d68d0903305d...	0.0 ms	7.9 KiB
/coub_storage/category/cw_image/503df3602c0/3bb25ae4face4...	0.0 ms	7.5 KiB
/coub_storage/category/cw_image/6a781fee541/43bd121143177...	0.0 ms	7.3 KiB
/coub_storage/category/cw_image/cc945f16597/2b4fb4d4deb9e...	0.0 ms	7.0 KiB
/coub_storage/category/cw_image/0327247c5ff/85914bdd8e1ed...	0.0 ms	7.0 KiB
/coub_storage/category/cw_image/f29db91ad17/ceeba69e8fe30...	0.0 ms	6.9 KiB
/coub_storage/category/cw_image/c9ec52f6b8e/901439d39eb2d...	0.0 ms	6.7 KiB
/coub_storage/category/cw_image/496fb34cd0a/573a3d5c899f3...	0.0 ms	6.3 KiB
/coub_storage/channel/cw_avatar/5d6fa2a89c2/848bcf402f027...	0.0 ms	5.5 KiB
/coub_storage/channel/cw_avatar/cbc66b4a828/de038aa585880...	0.0 ms	5.0 KiB
/coub_storage/channel/cw_avatar/878d37ece35/91e4ae1f5a93f...	0.0 ms	4.6 KiB
/coub_storage/channel/cw_avatar/adabf3877e1/15140904d333c...	0.0 ms	4.6 KiB
/coub_storage/channel/cw_avatar/ef842847b44/8efa04c0ec667...	0.0 ms	4.0 KiB
/sync_cookie_image_decide_secondary?cid=48571952&scid=94b...	0.0 ms	267 B
mc.yandex.com/metrika/advert.gif?t=gdpr(14)ti(4)	3600.0 s	139 B
/sync_cookie_image_decide?cid=48571952&scid=b1295af4-ecbf...	0.0 ms	67 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.

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
/assets/helveticacoub-woff/helveticaneuecoub-bold-fa36438...	45 ms
/assets/helveticacoub-woff/helveticaneuecoub-normal-15b78...	40 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[reflowTime:46.223 source:map[column:47 line:60515 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.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:25.194 source:map[column:14 line:9003 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.653 source:map[column:12094 line:28579 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.255 source:map[column:12119 line:28579 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:5.642 source:map[column:13586 line:28579 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:1.395 source:map[column:27 line:1636 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.316 source:map[column:60 line:1643 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.165 source:map[column:43 line:1648 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:1.218 source:map[column:42 line:1657 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.242 source:map[column:36 line:1663 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.416 source:map[column:29 line:1674 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.267 source:map[column:40 line:1682 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.271 source:map[column:63 line:1688 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:1.883 source:map[column:23 line:6797 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.404 source:map[column:44 line:9220 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.js urlProvider:network]] map[reflowTime:0.61 source:map[column:27 line:9554 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.239 source:map[column:60 line:9561 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.197 source:map[column:43 line:9566 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.263 source:map[column:42 line:9575 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.235 source:map[column:36 line:9581 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.316 source:map[column:29 line:9592 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.262 source:map[column:40 line:9600 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.268 source:map[column:63 line:9606 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.332 source:map[column:20029 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.213 source:map[column:20126 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.154 source:map[column:20222 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.225 source:map[column:20340 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.224 source:map[column:20441 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.283 source:map[column:20582 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.238 source:map[column:20705 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:0.226 source:map[column:20865 line:17270 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:12.386 source:map[column:118 line:41033 type:source-location url:https://assets-cdn-s.coub.com/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b862f54e167430734e77a28.js urlProvider:network]] map[reflowTime:34.542 source:map[column:14 line:6698 type:source-location url:https://assets-cdn-s.coub.com/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c117525feb11ff66de14d386f731e.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
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`	/coub_storage/coub/simple/cw_timeline_pic/77be9313487/b7b...	80.0 KiB	42.5 KiB
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`	/coub_storage/channel/cw_avatar/1343fbc4b57/80bdfe6728dde...	36.2 KiB	35.9 KiB
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`	/coub_storage/coub/simple/cw_timeline_pic/af5cd35379e/9a7...	69.4 KiB	31.9 KiB
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`	/coub_storage/coub/simple/cw_timeline_pic/cddaa16a059/5c6...	58.4 KiB	20.9 KiB
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`	/coub_storage/channel/cw_avatar/3aa6b56f7c5/fb8c358447513...	14.1 KiB	12.6 KiB
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`	/coub_storage/channel/cw_avatar/d98c74c718d/550a91d1198b5...	11.3 KiB	9.8 KiB
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`	/coub_storage/coub/simple/cw_timeline_pic/e128866124e/a9d...	39.5 KiB	9.7 KiB
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`	/coub_storage/channel/cw_avatar/e81abddfed3/240b107d47753...	9.9 KiB	8.4 KiB
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`	/coub_storage/channel/cw_avatar/cd1d0feabf3/3121413390777...	9.5 KiB	8.0 KiB
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`	/coub_storage/coub/simple/cw_timeline_pic/c878b409474/4ce...	54.1 KiB	5.2 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:283.433 label:Time to first byte subpart:timeToFirstByte] map[duration:1227.194 label:Resource load delay subpart:resourceLoadDelay] map[duration:65.619 label:Resource load duration subpart:resourceLoadDuration] map[duration:982.748 label:Element render delay subpart:elementRenderDelay]]

lhId: page-10-IMG

nodeLabel: div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img

path: 1,HTML,1,BODY,0,DIV,3,DIV,1,DIV,1,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,IMG

selector: div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img

snippet: <img src="https://attachments-cdn-s.coub.com/coub_storage/coub/simple/cw_timeline_pi…" class="viewer__img">

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-10-IMG

nodeLabel: div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img

path: 1,HTML,1,BODY,0,DIV,3,DIV,1,DIV,1,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,IMG

selector: div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img

snippet: <img src="https://attachments-cdn-s.coub.com/coub_storage/coub/simple/cw_timeline_pi…" class="viewer__img">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

title: Preconnected origins

value: no origins were preconnected

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

title: Preconnect candidates

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: 863 ms

URL	Time Spent
coub.com/	863 ms
coub.com/featured/creators	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

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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: 1.1 s 228.5 KiB

URL	Transfer Size	Est Savings
/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b86...	662.2 KiB	184.0 KiB
/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c1...	209.6 KiB	44.5 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 180 ms 60.4 KiB

URL	Transfer Size	Est Savings
/assets/coub/core_light-c062b7ff754032b4ca0e52a6925ed12a6...	64.1 KiB	60.4 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: 3.1 s 648.2 KiB

URL	Transfer Size	Est Savings
/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b86...	660.7 KiB	452.6 KiB
www.googletagmanager.com/gtag/js?id=G-57C6383EJ1&cx=c&gtm=4e64h1	160.3 KiB	64.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-MXHWXFG	120.3 KiB	61.7 KiB
mc.yandex.ru/metrika/tag.js	84.7 KiB	45.0 KiB
/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c1...	202.4 KiB	24.9 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
/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b86...	2.8 s	1.5 s	521 ms
/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c1...	1.4 s	939 ms	179 ms
mc.yandex.ru/metrika/tag.js	1.1 s	942 ms	40 ms
Unattributable	754 ms	60 ms	0.0 ms
www.googletagmanager.com/gtag/js?id=G-57C6383EJ1&cx=c&gtm=4e64h1	490 ms	407 ms	76 ms
www.googletagmanager.com/gtm.js?id=GTM-MXHWXFG	252 ms	197 ms	52 ms
coub.com/featured/creators	221 ms	13 ms	6.0 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	4.1 s
Other	1.0 s
Script Parsing & Compilation	874 ms
Style & Layout	560 ms
Parse HTML & CSS	340 ms
Garbage Collection	117 ms
Rendering	93 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable
Pages with WebSocket cannot enter back/forward cache.	Pending browser support

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
/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b86...	662.5 KiB
/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c1...	210.0 KiB
www.googletagmanager.com/gtag/js?id=G-57C6383EJ1&cx=c&gtm=4e64h1	160.4 KiB
/coub_storage/coub/simple/cw_file/02c1626b049/ee89b1a0236...	128.5 KiB
/coub_storage/coub/simple/cw_file/02c1626b049/ee89b1a0236...	128.5 KiB
/coub_storage/coub/simple/cw_file/02c1626b049/ee89b1a0236...	128.5 KiB
/coub_storage/coub/simple/cw_file/02c1626b049/ee89b1a0236...	120.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-MXHWXFG	120.7 KiB
mc.yandex.ru/metrika/tag.js	85.5 KiB
/coub_storage/channel/cw_avatar/b09c2cd4b67/ff07e954e22d6...	83.7 KiB

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

●Layout shift culprits

●Optimize DOM size

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 25 user timings

●Avoid long main-thread tasks 20 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 50 ms

●Server Backend Latencies 50 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 110 ms

○INP breakdown

○Avoid non-composited animations

○Avoid large layout shifts

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

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.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`
div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb `div.coub-description__about__inner > div.dropdown > div.dropdown__handler > button.sb`

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.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`

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.page-menu > div.page-menu__inner > div.page-menu__item > a.-fill `div.page-menu > div.page-menu__inner > div.page-menu__item > a.-fill`
div.page-menu > div.page-menu__inner > div.page-menu__item > a.-fill `div.page-menu > div.page-menu__inner > div.page-menu__item > a.-fill`
div.page-menu > div.page-menu__inner > div.page-menu__item > a.-fill `div.page-menu > div.page-menu__inner > div.page-menu__item > a.-fill`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a`
div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > a `div.coub-description__about > div.coub-description__about__inner > div.coub-description__avatar > 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
94 `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1.3K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1.3K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1.4K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
# 14 `div.coub-description__badges > div.dropdown > div.dropdown__handler > button.sb`
964 `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1.1K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
824 `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1.5K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`
1.3K `div.coub-description__views-count > div.counter > div.dropdown__handler > div`

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
muzloRAIii `div.coub__vd > div.coub__description > div.coub-description__title > h5.description__title`

These are opportunities to improve keyboard navigation in your application.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.webkit `html.webkit`

These are opportunities to improve the interpretation of your content by users in different locales.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
head > meta `head > meta`

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.webkit `html.webkit`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●Document has a `<title>` element

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

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

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

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

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

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted ARIA attributes

○`[role]`s have all required `[aria-*]` attributes

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

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

○`[role]` values are valid

○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

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

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

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

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

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

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has a valid value for its `[lang]` attribute

○`<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

○Form elements have associated labels

○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

○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

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

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○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
Unload event listeners are deprecated and will be removed.	/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c1... line 3005, col 11

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
coub.com/featured/creators	`NotAllowedError: play() failed because the user didn't interact with the document first. https://goo.gl/xX8pDD`

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
/assets/sync_bundle-bcaff46185690a548a0a5c2ae6bf7869ef4c1...
/assets/site-b14280a713262d06a8741f014999b8b61b69af8d3b86...

●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 clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

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.

Crawling and Indexing

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`
Open in app `div.viewer__controls__container > div.viewer__pause > div.viewer__pause__content > a.viewer__pause__open-in-app`

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

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.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img`
div.coub-description__about__inner > div.coub-description__avatar > a > img.image `div.coub-description__about__inner > div.coub-description__avatar > a > img.image`
div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__img `div.fullscreen-changer__animation_container > div.viewer > div.contents > img.viewer__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

●robots.txt is valid

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`