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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

8

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:1.0681896554834955] map[node:map[boundingRect:map[bottom:27869 height:27869 left:0 right:412 top:0 width:412] lhId:page-23-BODY nodeLabel:body#home_page path:1,HTML,1,BODY selector:body#home_page snippet:<body class="body_mobile personalized-page " id="home_page" data-checkpage="1" data-source="Home" style="overflow: hidden;"> type:node] score:1] map[node:map[boundingRect:map[bottom:27869 height:27869 left:0 right:412 top:0 width:412] lhId:page-23-BODY nodeLabel:body#home_page path:1,HTML,1,BODY selector:body#home_page snippet:<body class="body_mobile personalized-page " id="home_page" data-checkpage="1" data-source="Home" style="overflow: hidden;"> type:node] score:0.02430133657351154] map[node:map[boundingRect:map[bottom:730 height:637 left:21 right:391 top:93 width:371] lhId:page-25-DIV nodeLabel:vnexpress asks for your consent to use your personal data to: Personalised adve… path:1,HTML,1,BODY,104,DIV,1,DIV selector:body#home_page > div.fc-consent-root > div.fc-dialog-container snippet:<div class="fc-dialog-container"> type:node] score:0.02239814421257501 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:37 height:28 left:-281 right:-131 top:9 width:150] lhId:page-38-IMG nodeLabel:Báo VnExpress - Báo tiếng Việt nhiều người xem nhất path:1,HTML,1,BODY,81,NAV,0,DIV,1,A,0,IMG selector:nav#main_menu > div.header_menu > a.logo-on-menu > img.lazyInitial snippet:<img src="https://s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/graphi…" alt="Báo VnExpress - Báo tiếng Việt nhiều người xem nhất" class="lazyInitial lazyLoaded" data-was-processed="true"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:1064 height:383 left:0 right:412 top:681 width:412] lhId:page-18-ARTICLE nodeLabel:Chiếc áo giúp 'né' camera AI giám sát Nhà thiết kế Đức Simon Weckert tạo ra áo… path:1,HTML,1,BODY,25,SECTION,1,ARTICLE selector:body#home_page > section.width_common > article.art_item snippet:<article data-swap="1" data-ea="Item-2" ea-itm-source="#vn_source=Home&amp;vn_campaign=ThuongVien&amp;vn_medium=Item-2&amp;vn_term=Mobile&amp;vn_…" data-ea-thumb="1" data-ea-aid="5114517" class=" art_item art_section inner_section item_full_thumb gaBoxLinkDisplay" data-event-category="Article Link Display" data-event-action="ThuongVien" data-event-label="Item-2" data-campaign="ThuongVien" data-gtm-vis-recent-on-screen2359946_230="454" data-gtm-vis-first-on-screen2359946_230="454" data-gtm-vis-total-visible-time2359946_230="100" data-gtm-vis-has-fired2359946_230="1"> type:node] score:0.01950852170806211 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:669 height:70 left:20 right:392 top:598 width:372] lhId:page-2-IMG nodeLabel:Kỷ niệm 81 năm Quốc khánh 2/9 path:1,HTML,1,BODY,23,SECTION,0,A,0,IMG selector:body#home_page > section.art_item > a > img.lazyInitial snippet:<img alt="Kỷ niệm 81 năm Quốc khánh 2/9" src="https://s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/banner/banner_quockhan…" class="lazyInitial lazyLoaded" data-was-processed="true"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:2901 height:1 left:20 right:392 top:2900 width:372] lhId:page-17-::after nodeLabel:body#home_page > section.width_common > div.art_item > ::after path:1,HTML,1,BODY,25,SECTION,18,DIV,0,::after selector:body#home_page > section.width_common > div.art_item > ::after snippet:<::after> type:node] score:0.001097099175406104]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.041638976414811645] map[node:map[boundingRect:map[bottom:586 height:446 left:0 right:412 top:140 width:412] lhId:page-26-SECTION nodeLabel:10 giờ dòng lũ quét xé toạc vùng biên giới Nepal Khoảng 20 triệu khối nước từ … path:1,HTML,1,BODY,21,SECTION selector:body#home_page > section#top_story snippet:<section data-cnh="{&quot;execule&quot;:[5114350,5114506,5114517,5114651,5114553,5114709,5114718,511444…" class="section" id="top_story" data-campaign="ThuongVien" data-page-name="home"> type:node] score:0.03821481141365569] map[node:map[boundingRect:map[bottom:829 height:95 left:20 right:392 top:734 width:372] lhId:page-28-P nodeLabel:Nhà thiết kế Đức Simon Weckert tạo ra áo sơ mi với sự kết hợp màu và họa tiết đ… path:1,HTML,1,BODY,25,SECTION,1,ARTICLE,1,P selector:body#home_page > section.width_common > article.art_item > p.short_intro snippet:<p class="short_intro"> type:node] score:0.003424165001155955]]

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...55 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:15.209 source:map[column:352 line:818 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-N3FNJF 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:109.712 source:map[type:text value:[unattributed]]] map[reflowTime:0.146 source:map[column:421 line:174 type:source-location url:https://scdn.eclick.vn/delivery/dfp/ov_mb_vne_home_home.js urlProvider:network]] map[reflowTime:15.209 source:map[column:55 line:816 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-N3FNJF urlProvider:network]] map[reflowTime:0.931 source:map[column:169 line:105 type:source-location url:https://scdn.eclick.vn/delivery/dfp/ov_mb_vne_home_home.js urlProvider:network]] map[reflowTime:0.882 source:map[column:112 line:9 type:source-location url:https://scdn.eclick.vn/delivery/dfp/ov_mb_vne_home_home.js urlProvider:network]] map[reflowTime:0.304 source:map[column:55 line:863 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-N3FNJF urlProvider:network]] map[reflowTime:6.065 source:map[column:12755 line:0 type:source-location url:https://s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/redesign/helper/lazyload.js urlProvider:network]] map[reflowTime:0.442 source:map[column:31497 line:4 type:source-location url:https://s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/redesign/helper/jquery.min.js urlProvider:network]] map[reflowTime:7.526 source:map[column:18261 line:2 type:source-location url:https://s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/ldpr/jquery-2.1.4.min.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.

URLResource SizeEst Savings
10 giờ dòng lũ quét xé toạc vùng biên giới Nepal article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/ap26238515301269-1787892153-4738-1787892599.j...275.1 KiB258.5 KiB
Chiếc áo giúp 'né' camera AI giám sát article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/digitalcamouflageshirtaivideos-9625-4668-1787...188.4 KiB174.8 KiB
Kỷ niệm 81 năm Quốc khánh 2/9 body#home_page > section.art_item > a > img.lazyInitial
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/banner/banner_quockhanh_mb.png155.5 KiB151.2 KiB
s1.vnecdn.net/vnexpress/restruct/i/v9873/graphics/vne-go.png69.9 KiB69.7 KiB
10 giờ dòng lũ quét xé toạc vùng biên giới Nepal article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/ap26238515301269-1787892153-4738-1787892599.j...85.2 KiB68.7 KiB
Người thả diều thừa nhận sai phạm khi làm ảnh hưởng 16 chuyến bay article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/Sequence5900005515Still001-178-2369-4906-1787...81.2 KiB67.7 KiB
Chặng đường yêu của Hoàng Oanh, Patrik Lê Giang article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/Patrik-Le-Giang-Hoang-Oang-1-1787890699.jpg?w...60.7 KiB47.2 KiB
Chiếc áo giúp 'né' camera AI giám sát article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/digitalcamouflageshirtaivideos-9625-4668-1787...59.8 KiB46.2 KiB
Hà Nội làm cầu cạn mở rộng đường ven Hồ Tây article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/ht1-1787916473-4603-1787916481.jpg?w=380&h=22...42.9 KiB29.4 KiB
Alvarez trầm cảm trong lúc đòi sang Barca article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/ap26200714474249-1787922674-9235-1787922805.j...39.2 KiB25.7 KiB
Lộ trình dự kiến hạn chế xe xăng, dầu ở TP HCM article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/Thumbngang-1787881837-4991-1787886186.jpg?w=3...38.6 KiB25.1 KiB
Ông Trump mua bán loạt cổ phiếu xăng dầu giữa chiến sự Iran article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/ap26239631426044-1787904689-3211-1787904724.j...34.7 KiB21.2 KiB
Mối tình Cảnh Điềm và tỷ phú tiền ảo article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/canhdiem6-1787889201-8328-1787889708.jpg?w=38...32.4 KiB18.9 KiB
'Zalo cạnh tranh sòng phẳng với nền tảng ngoại' article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/zalo-1787915354-3747-1787915408.png?w=500&h=3...29.5 KiB12.9 KiB
Việt Nam phản đối Trung Quốc xây dựng trái phép tại Hoàng Sa article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/nfnbngphamthuhang1-1787911561-7693-1787911578...25.4 KiB11.9 KiB
Trung Quốc khai trừ tướng cấp cao khỏi Quân ủy Trung ương article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/28/2025t043811z-rc2p8da68ih4-rtrm-2313-5814-1787...23.9 KiB10.4 KiB
Philippines div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1555.png?v=110.2 KiB10.2 KiB
AI làm, ai hiểu? div.content_box_gocnhin > div.thumb_art > a.thumb_img > img.vne_lazy_image
/2026/08/27/NhatMinhpng-1787846803.png?w=180&h=180&q=100&...8.2 KiB6.5 KiB
Malaysia div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1538.png?v=15.4 KiB5.3 KiB
Singapore div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1546.png?v=14.4 KiB4.3 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:1018.808 label:Time to first byte subpart:timeToFirstByte] map[duration:563.437 label:Resource load delay subpart:resourceLoadDelay] map[duration:1866.956998046875 label:Resource load duration subpart:resourceLoadDuration] map[duration:12.486001953125 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: 10 giờ dòng lũ quét xé toạc vùng biên giới Nepal
path: 1,HTML,1,BODY,21,SECTION,0,ARTICLE,0,DIV,0,A,0,IMG
selector: article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
snippet: <img src="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" class="vne_lazy_image lazyInitial lazyLoaded" data-original="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" data-original-2x="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" data-original-video="" alt="10 giờ dòng lũ quét xé toạc vùng biên giới Nepal" data-retina-current="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" data-original-base="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" …>

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-0-IMG
nodeLabel: 10 giờ dòng lũ quét xé toạc vùng biên giới Nepal
path: 1,HTML,1,BODY,21,SECTION,0,ARTICLE,0,DIV,0,A,0,IMG
selector: article.art_item > div.thumb_art > a.thumb_img > img.vne_lazy_image
snippet: <img src="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" class="vne_lazy_image lazyInitial lazyLoaded" data-original="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" data-original-2x="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" data-original-video="" alt="10 giờ dòng lũ quét xé toạc vùng biên giới Nepal" data-retina-current="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" data-original-base="https://vcdn1-vnexpress.vnecdn.net/2026/08/28/ap26238515301269-1787892153-…" …>

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
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

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.

RequestCache TTLTransfer Size
la2.vnecdn.net/static/device_model_min.js900.0 s614.2 KiB
octopus-stream01-cads.fpt.vn/cdp.js0.0 ms129.5 KiB
scdn.eclick.vn/delivery/dfp/prebid.js3600.0 s115.7 KiB
s1cdn.vnecdn.net/vnexpress/restruct/c/v4120/v2/fonts/Merriweather-Regular.woff0.0 ms83.5 KiB
s1cdn.vnecdn.net/vnexpress/restruct/c/v4120/v2/fonts/Merriweather-Bold.woff0.0 ms81.4 KiB
scdn.eclick.vn/delivery/dfp/dfpbrand.js3600.0 s40.8 KiB
scdn.eclick.vn/delivery/dfp/ov_mb_vne_home_home.js3600.0 s35.9 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
la2.vnecdn.net/static/adp_banner.js900.0 s12.8 KiB
scdn.eclick.vn/delivery/asset/357445090/adsbyeclick.js86400.0 s16.6 KiB
/AjD93LOobHdHoquREgIFv4XQ29o3uINtos53vXXlfSZezE0fkZvfQ1r_...86400.0 s2.7 KiB
s.eclick.vn/delivery/inventory.js86400.0 s1.6 KiB
/widget/index/?s=1000000&cid=5114470-13;5114701-13;511437...60.0 s607 B
/widget/index/?s=1000000&cid=5114350-1;5114517-1;5114506-...60.0 s602 B
/widget/index/?s=1000000&cid=5112780-1;5111551-1;5111195-1&60.0 s417 B
scdn.eclick.vn/delivery/dfp/bad.js3600.0 s341 B
s.eclick.vn/bad.js86400.0 s315 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B
/a?id=G-DQJ7NF9DN2&v=3&t=t&pid=1184481892&gtm=45je68q1v87...0.0 ms11 B

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
/2026/08/28/ap26238515301269-1787892153-4738-1787892599.j...http/1.1
/2026/08/28/Patrik-Le-Giang-Hoang-Oang-1-1787890699.jpg?w...http/1.1
/2026/08/28/digitalcamouflageshirtaivideos-9625-4668-1787...http/1.1
/2026/08/28/Sequence5900005515Still001-178-2369-4906-1787...http/1.1
/2026/08/28/ap26239631426044-1787904689-3211-1787904724.j...http/1.1
/2026/08/28/2025t043811z-rc2p8da68ih4-rtrm-2313-5814-1787...http/1.1
/2026/08/28/zalo-1787915354-3747-1787915408.png?w=500&h=3...http/1.1
/2026/08/28/Sequence02-1787920920-7103-1787920925.gif?w=3...http/1.1
/2026/08/28/Thumbngang-1787881837-4991-1787886186.jpg?w=3...http/1.1
/2026/08/28/canhdiem6-1787889201-8328-1787889708.jpg?w=38...http/1.1
/2026/08/28/nfnbngphamthuhang1-1787911561-7693-1787911578...http/1.1
/2026/08/27/NhatMinhpng-1787846803.png?w=180&h=180&q=100&...http/1.1
/2026/08/28/ht1-1787916473-4603-1787916481.jpg?w=380&h=22...http/1.1
/2026/08/28/barron-jpg-1787890253-8981-1787890416.jpg?w=3...http/1.1
/2026/08/28/ap26240082150595-1787903106-7491-1787903832.j...http/1.1
/2026/08/28/wm1-wm1-1783737973575e85e2a7f9afe2-9525-8912-...http/1.1
/2026/08/28/Artcover16x9-1787903432-5722-1787904847.png?w...http/1.1
/2026/08/28/wanchai-hau-ve-thai-lan-da-phan-luoi-nha-1787...http/1.1
/2026/08/28/wm1-2aoboquhrvlvvdcc5wzoaz1ehjlufgvrjubicxws-...http/1.1
/2026/08/28/Kiev-1787909938-8638-1787910341.png?w=380&h=2...http/1.1
/2026/08/28/VNEShip-1787902791-6989-1787903370.jpg?w=380&...http/1.1
/2026/08/28/202608280905496692-z8201245961-6474-9162-1787...http/1.1
/2026/08/28/Sequence5900005515Still001-178-2369-4906-1787...http/1.1
/2026/08/28/ap26239631426044-1787904689-3211-1787904724.j...http/1.1
/2026/08/28/2025t043811z-rc2p8da68ih4-rtrm-2313-5814-1787...http/1.1
/2026/08/28/zalo-1787915354-3747-1787915408.png?w=500&h=3...http/1.1
/2026/08/28/Thumbngang-1787881837-4991-1787886186.jpg?w=3...http/1.1
/2026/08/28/canhdiem6-1787889201-8328-1787889708.jpg?w=38...http/1.1
/2026/08/28/nfnbngphamthuhang1-1787911561-7693-1787911578...http/1.1
/2026/08/27/NhatMinhpng-1787846803.png?w=180&h=180&q=100&...http/1.1
/2026/08/28/ht1-1787916473-4603-1787916481.jpg?w=380&h=22...http/1.1
/2026/08/28/barron-jpg-1787890253-8981-1787890416.jpg?w=3...http/1.1
/2026/08/28/ap26240082150595-1787903106-7491-1787903832.j...http/1.1
/2026/08/28/wm1-wm1-1783737973575e85e2a7f9afe2-9525-8912-...http/1.1
/2026/08/28/Artcover16x9-1787903432-5722-1787904847.png?w...http/1.1
/2026/08/28/wanchai-hau-ve-thai-lan-da-phan-luoi-nha-1787...http/1.1
/2026/08/28/wm1-2aoboquhrvlvvdcc5wzoaz1ehjlufgvrjubicxws-...http/1.1
/2026/08/28/Kiev-1787909938-8638-1787910341.png?w=380&h=2...http/1.1
/2026/08/28/VNEShip-1787902791-6989-1787903370.jpg?w=380&...http/1.1
/2026/08/28/202608280905496692-z8201245961-6474-9162-1787...http/1.1
/2026/08/28/ap26238515301269-1787892153-4738-1787892599.j...http/1.1
/2026/08/28/digitalcamouflageshirtaivideos-9625-4668-1787...http/1.1
/2026/08/28/Patrik-Le-Giang-Hoang-Oang-1-1787890699.jpg?w...http/1.1
/2026/08/28/tansonnhat-1787910083.jpg?w=500&h=300&q=100&d...http/1.1
/2026/08/28/2aoboqlee0qafzgbviw1igyb8-jpg-2754-1210-17878...http/1.1
/2026/08/28/Trump-1787873522-3961-1787873782.png?w=500&h=...http/1.1
/2026/08/26/afpjg4jn-v2-highres-presidentd-7874-6730-1787...http/1.1
/2026/08/27/dji-1787827232-2656-1787827872.jpg?w=500&h=30...http/1.1
/2026/08/27/2-1787804896.jpg?w=100&h=100&q=100&dpr=1&fit=...http/1.1
/2026/08/28/typhucngnghtrungq-1787884498-2679-1787884502....http/1.1
/2026/08/25/duyhungdanhvo-1787616850-6824-1787616960.jpg?...http/1.1
/2026/08/28/1-copy-1787920413-1809-1787920460.jpg?w=500&h...http/1.1
/2026/08/28/tq-jpeg-1787919789-7387-1787919880.jpg?w=100&...http/1.1
/2026/08/28/top1-1787888138-6715-1787888264.jpg?w=330&h=4...http/1.1
/2026/08/28/thumb12x3-1787916489-2802-1787916718.jpg?w=33...http/1.1
/2026/08/28/cuunguoi-1787882339-5214-1787882346.jpg?w=330...http/1.1
/2026/08/27/ngapHN-1787837760-8992-1787838430.jpg?w=330&h...http/1.1
/2026/08/27/20260827191040-1787832790-6731-1787832880.jpg...http/1.1
/2026/08/27/top3-1787826508-5477-1787826545.jpg?w=330&h=4...http/1.1
/2026/08/27/20260827151056-1787818290-4987-1787818299.jpg...http/1.1
/2026/08/28/top1-1787888138-6715-1787888264.jpg?w=330&h=4...http/1.1
/2026/08/28/thumb12x3-1787916489-2802-1787916718.jpg?w=33...http/1.1
/2026/08/28/cuunguoi-1787882339-5214-1787882346.jpg?w=330...http/1.1
/2026/08/27/ngapHN-1787837760-8992-1787838430.jpg?w=330&h...http/1.1
/2026/08/27/20260827191040-1787832790-6731-1787832880.jpg...http/1.1
/2026/08/27/top3-1787826508-5477-1787826545.jpg?w=330&h=4...http/1.1
/2026/08/27/20260827151056-1787818290-4987-1787818299.jpg...http/1.1
/2026/08/28/tansonnhat-1787910083.jpg?w=500&h=300&q=100&d...http/1.1
/2026/08/28/2aoboqlee0qafzgbviw1igyb8-jpg-2754-1210-17878...http/1.1
/2026/08/28/Trump-1787873522-3961-1787873782.png?w=500&h=...http/1.1
/2026/08/26/afpjg4jn-v2-highres-presidentd-7874-6730-1787...http/1.1
/2026/08/27/dji-1787827232-2656-1787827872.jpg?w=500&h=30...http/1.1
/2026/08/27/2-1787804896.jpg?w=100&h=100&q=100&dpr=2&fit=...http/1.1
/2026/08/28/typhucngnghtrungq-1787884498-2679-1787884502....http/1.1
/2026/08/25/duyhungdanhvo-1787616850-6824-1787616960.jpg?...http/1.1
/2026/08/28/1-copy-1787920413-1809-1787920460.jpg?w=500&h...http/1.1
/2026/08/28/tq-jpeg-1787919789-7387-1787919880.jpg?w=100&...http/1.1

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

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
body#home_page body#home_page
1.000
Chiếc áo giúp 'né' camera AI giám sát Nhà thiết kế Đức Simon Weckert tạo ra áo… body#home_page > section.width_common > article.art_item
0.038
body#home_page body#home_page
0.024
vnexpress asks for your consent to use your personal data to: Personalised adve… body#home_page > div.fc-consent-root > div.fc-dialog-container
0.022
Chiếc áo giúp 'né' camera AI giám sát Nhà thiết kế Đức Simon Weckert tạo ra áo… body#home_page > section.width_common > article.art_item
0.020
Nhà thiết kế Đức Simon Weckert tạo ra áo sơ mi với sự kết hợp màu và họa tiết đ… body#home_page > section.width_common > article.art_item > p.short_intro
0.003
body#home_page > section.width_common > div.art_item > ::after body#home_page > section.width_common > div.art_item > ::after
0.001
Thế giới section#breadcrum > div#my-scroll > ul#auto_breadcrumb_bar > li
0.001

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.1 s 2.2 MiB
URLTransfer SizeEst Savings
la2.vnecdn.net/static/device_model_min.js613.9 KiB432.1 KiB
la2.vnecdn.net/static/device_model_min.js613.9 KiB432.1 KiB
la2.vnecdn.net/static/device_model_min.js613.9 KiB432.1 KiB
/pagead/managed/js/gpt/m202608240101/pubads_impl.js206.5 KiB144.7 KiB
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/evisual/common/hls.min.js156.6 KiB142.4 KiB
accounts.google.com/gsi/client98.1 KiB72.0 KiB
www.googletagmanager.com/gtag/js?id=G-8DHKH6QPCD&cx=c&gtm=4e68q1167.4 KiB71.2 KiB
www.googletagmanager.com/gtag/js?id=G-DQJ7NF9DN2&cx=c&gtm=4e68q1160.1 KiB68.7 KiB
/vnexpress/restruct/j/v9382/redesign/helper/mgeneral_pers...87.6 KiB66.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-NMB96XWK127.3 KiB66.0 KiB
www.googletagmanager.com/gtag/js?id=G-57577CKS2C&cx=c&gtm=4e68q1179.5 KiB65.9 KiB
octopus-stream01-cads.fpt.vn/cdp.js129.0 KiB53.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-N3FNJF182.0 KiB51.1 KiB
scdn.eclick.vn/delivery/dfp/prebid.js115.6 KiB45.4 KiB
fundingchoicesmessages.google.com/i/21928950349?ers=370.0 KiB35.6 KiB
s1cdn.vnecdn.net/myvne/j/v483/m_myvne_users_v3.js36.7 KiB27.4 KiB
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/v3/production/widget/myvne_hint.js29.0 KiB24.5 KiB
challenges.cloudflare.com/turnstile/v0/api.js?render=explicit26.5 KiB22.9 KiB
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/evisual/main.js21.9 KiB20.6 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.

URLTotal CPU TimeScript EvaluationScript Parse
vnexpress.net/2.7 s157 ms29 ms
Unattributable2.1 s100 ms0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-N3FNJF1.0 s790 ms90 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/widget/libs/ic.js877 ms851 ms1.4 ms
/vnexpress/restruct/j/v9382/redesign/helper/mgeneral_pers...677 ms453 ms26 ms
scdn.eclick.vn/delivery/dfp/prebid.js480 ms442 ms20 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/redesign/require.js452 ms407 ms6.7 ms
www.googletagmanager.com/gtag/js?id=G-57577CKS2C&cx=c&gtm=4e68q1358 ms319 ms35 ms
/f/AGSKWxVSn2qncLUSqY2fQ_8RH_VB8NLWT3ApBonEBss0J4JWF-S5VN...340 ms159 ms49 ms
la2.vnecdn.net/static/device_model_min.js266 ms91 ms175 ms
www.googletagmanager.com/gtag/js?id=G-DQJ7NF9DN2&cx=c&gtm=4e68q1250 ms210 ms36 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/eclick/ea3.js242 ms188 ms2.8 ms
fundingchoicesmessages.google.com/i/21928950349?ers=3232 ms213 ms15 ms
www.googletagmanager.com/gtag/js?id=G-8DHKH6QPCD&cx=c&gtm=4e68q1216 ms182 ms31 ms
scdn.eclick.vn/delivery/dfp/ov_mb_vne_home_home.js215 ms174 ms18 ms
/pagead/managed/js/gpt/m202608240101/pubads_impl.js213 ms166 ms44 ms
scdn.eclick.vn/delivery/asset/357445090/adsbyeclick.js150 ms84 ms3.5 ms
www.googletagmanager.com/gtm.js?id=GTM-NMB96XWK150 ms108 ms25 ms
octopus-stream01-cads.fpt.vn/cdp.js137 ms117 ms8.1 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/redesign/helper/jquery.min.js121 ms79 ms6.2 ms
/widget/index/?s=1000000&cid=5114350-1;5114517-1;5114506-...120 ms82 ms0.5 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/redesign/helper/lazyload.js98 ms68 ms1.3 ms
s1cdn.vnecdn.net/myvne/j/v483/plugins/vne_v3.js76 ms70 ms2.3 ms
securepubads.g.doubleclick.net/tag/js/gpt.js76 ms63 ms13 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/evisual/common/hls.min.js76 ms34 ms41 ms
accounts.google.com/gsi/client74 ms53 ms20 ms
/vnexpress/restruct/j/v9382/redesign/helper/interactions/...67 ms60 ms4.0 ms
www.google-analytics.com/analytics.js64 ms38 ms14 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/ldpr/jquery-2.1.4.min.js56 ms43 ms6.0 ms
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/v3/production/widget/myvne_hint.js54 ms46 ms5.0 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.

CategoryTime Spent
Script Evaluation6.2 s
Other3.2 s
Style & Layout1.3 s
Script Parsing & Compilation862 ms
Rendering497 ms
Parse HTML & CSS338 ms
Garbage Collection147 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 200.0 KiB
URLTransfer SizeEst Savings
s1cdn.vnecdn.net/vnexpress/restruct/c/v4120/v2/mobile_redesign/font-Inter.css150.8 KiB150.8 KiB
s1cdn.vnecdn.net/vnexpress/restruct/c/v4120/v2/mobile_redesign/mgeneral.css24.5 KiB23.4 KiB
.fc-consent-root .fc-dialog-container.fc-landscape-mode { height: 90% !important; … } …16.1 KiB13.9 KiB
.icon_thumb_videophoto{display:-webkit-flex;display:-moz-flex;display:-ms-flex;display:-o-flex; … } …17.0 KiB11.8 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/vnexpress/video/audio/2026/08/28/diem-tin-21h-ha-noi-lam...3.1 MiB
/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_ngo...773.0 KiB
la2.vnecdn.net/static/device_model_min.js614.2 KiB
/vnexpress/restruct/c/v4120/v2_2019/pc/weather/icon-demo/...571.3 KiB
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/retina.jpg?timestamp=1787927003493498.9 KiB
/2026/08/27/dji-1787827232-2656-1787827872.jpg?w=500&h=30...375.7 KiB
/2026/08/28/Sequence5900005515Still001-178-2369-4906-1787...285.3 KiB
/2026/08/28/ap26238515301269-1787892153-4738-1787892599.j...275.5 KiB
/2026/08/27/20260827151056-1787818290-4987-1787818299.jpg...272.2 KiB
/2026/08/28/tansonnhat-1787910083.jpg?w=500&h=300&q=100&d...248.1 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Vne Go hgroup.width_common > h2.parent-cate > a.inner-title > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/graphics/vne-go.png
Lịch thi đấu div.header-slide > h2.title-slide > a > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/graphics/top-mb-aseancup.png
Kỷ niệm 81 năm Quốc khánh 2/9 body#home_page > section.art_item > a > img.lazyInitial
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/banner/banner_quockhanh_mb.png
app_ns p.left > a > span > img
/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_ngo...
app_ns p.left > a > span > img.lazyLoaded
/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_ngo...
Việt Nam div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1542.png?v=1
Thái Lan div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1564.png?v=1
Thái Lan div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1564.png?v=1
Việt Nam div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1542.png?v=1
Việt Nam div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1542.png?v=1
Thái Lan div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1564.png?v=1
Việt Nam div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1542.png?v=1
Thái Lan div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1564.png?v=1
Philippines div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1555.png?v=1
Malaysia div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1538.png?v=1
Singapore div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1546.png?v=1
Malaysia div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1538.png?v=1
Singapore div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1546.png?v=1
Malaysia div.col-team > div.team-row > span.f-left > img
is.vnecdn.net/objects/teams/1538.png?v=1
netzero div.box-head > h3 > a > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/graphics/netzero.png
VnExpress - Bao tieng Viet nhieu nguoi xem nhat header#header > h1 > a.img_logo > img.lazyInitial
/vnexpress/restruct/i/v9905/mobile_redesign/graphics/logo...
VnExpress div#box_phungsukhatvongviet > div.sponsor-info > a.logo-tt > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/v2_2019/pc/graphics/logo.svg
50 năm phụng sự khát vọng Việt h2 > span.inner-title > a > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/graphics/50-vinamilk-mb.png
Doanh nghiệp vươn mình div.box-head > h3 > a > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/graphics/logo-mbbank.png
Báo VnExpress - Báo tiếng Việt nhiều người xem nhất nav#main_menu > div.header_menu > a.logo-on-menu > img.lazyInitial
/vnexpress/restruct/i/v9905/mobile_redesign/graphics/logo...
Vinamilk div#box_phungsukhatvongviet > div.sponsor-info > a.logo-tt > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/banner/logo-vinamilk.png
app_vne p.right > a > span > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_evne.svg
app_vne p.right > a > span > img.lazyLoaded
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_evne.svg
p.right > a > span > img p.right > a > span > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_vm.png
p.right > a > span > img.lazyLoaded p.right > a > span > img.lazyLoaded
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_vm.png
app_vne p.left > a > span > img
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_vne.svg
app_vne p.left > a > span > img.lazyLoaded
s1cdn.vnecdn.net/vnexpress/restruct/i/v9905/mobile_redesign/icons/app_vne.svg
section.inner_section > div.gopy-vne > a.flexbox > img section.inner_section > div.gopy-vne > a.flexbox > img
/vnexpress/restruct/i/v9905/mobile_redesign/graphics/ico-...

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

●Document request latency
●Optimize DOM size
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 9 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 330 ms
●Server Backend Latencies 300 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 390 ms
○INP breakdown
○User Timing marks and measures
87

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.tts-group-top > span#audio_5114668_group-center > span#audio_5114668_playPauseBtn > button.tts-button
div.block_scoll_menu > div.block_search > form#search > button#auto_search_button div.block_scoll_menu > div.block_search > form#search > button#auto_search_button

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#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match
div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match
div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match
div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match
div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match
div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match
div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match div#js_slider_ltdac > div.swiper-wrapper > div.swiper-slide > a.link-match

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
33° section.head-weather-today > div.weather > a > span.humidity
26° section.head-weather-today > div.weather > a > span.air
Advertisement div.banner_mobile_300x250 > div.inner_ads > span.text_ads > span.txt_qc
Advertisement div.banner_mobile_300x250 > div.inner_ads > span.text_ads > span.txt_qc
Nhà vũ trụ học section#box_gocnhin_home > div.content_box_gocnhin > div.author_gocnhin > span.position_author
Giá div.box-content-wrap > div.box-header > div.col-headers > span.w-gia
-60 div.box-content > div.row-content > div.price-col > span.change
-70 div.box-content > div.row-content > div.price-col > span.change
-460 div.box-content > div.row-content > div.price-col > span.change
Từ 15:00 27/8/2026 div.price-box > div.box-content-wrap > div.box-footer > span.mb-only
Đơn vị: VND/lít div.price-box > div.box-content-wrap > div.box-footer > span.mb-only
Advertisement div.banner_mobile_300x250 > div.inner_ads > span.text_ads > span.txt_qc
Advertisement div.banner_mobile_300x250 > div.inner_ads > span.text_ads > span.txt_qc
Mua div.box-content-wrap > div.box-header > div.col-headers > span.w-mua
Bán div.box-content-wrap > div.box-header > div.col-headers > span.w-ban
(USD/ounce) a > div.row-content > div.name-col > span.unit
(triệu đồng/lượng) a > div.row-content > div.name-col > span.unit
1 tháng div.box-content-wrap > div.box-content > div.col-rate > span.lbl
3 tháng div.box-content-wrap > div.box-content > div.col-rate > span.lbl
6 tháng div.box-content-wrap > div.box-content > div.col-rate > span.lbl
Advertisement div.banner_mobile_300x250 > div.inner_ads > span.text_ads > span.txt_qc
Advertisement section.section > div.banner_mobile_300x250 > div.inner_ads > span.text_ads
Learn more div.fc-dialog-content > div.fc-dialog-scrollable-content > button.fc-faq-header > span.fc-faq-label

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
10 giờ dòng lũ quét xé toạc vùng biên giới Nepal body#home_page > section#top_story > article.art_item > h4.title_news

These are opportunities to improve keyboard navigation in your application.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●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.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
92

Best Practices

Trust and Safety

Users are mistrustful of or confused by sites that request to send notifications without context. Consider tying the request to user gestures instead. Learn more about responsibly getting permission for notifications.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
s1cdn.vnecdn.net/vnexpress/restruct/j/v9382/v3/production/wpn.js

General

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.

SourceDescription
accounts.google.com/gsi/client line 87, col 88
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.
usi-saas.vnexpress.net/post/ic
Failed to load resource: the server responded with a status of 403 ()
vnexpress.net/
Not signed in with the identity provider.
/vnexpress/restruct/j/v9382/redesign/helper/interactions/...
Uncaught (in promise) Error: HTTP error! status: 403
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

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
div#myvne_taskbar > ul.myvne_form_log > li.myvne_user > a.myvne_icon div#myvne_taskbar > ul.myvne_form_log > li.myvne_user > a.myvne_icon

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

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

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