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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.

7

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.

RequestCache TTLTransfer Size
/vGiSZvKzcsfCP/giHHrQ9of/uJXjw/fcN3DJiN/bx5eaywUEwE/LVNAE...21600.0 s155.7 KiB
tags.tiqcdn.com/utag/blackrock/main/prod/utag.js300.0 s92.2 KiB
cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js86400.0 s128.4 KiB
www.blackrock.com/akam/13/5417da3b21600.0 s9.3 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s9.1 KiB
cdn.cookielaw.org/consent/1d844f07-6416-4f37-97e9-e7e8b80732f2/OtAutoBlock.js86400.0 s3.4 KiB
/logos/0f4f4874-7cfe-421a-9e95-77ce81461e4e/a3ea99a6-dba5...86400.0 s3.0 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.5 KiB
/utag/tiqapp/utag.v.js?a=blackrock/main/202604171547&cb=1...300.0 s430 B
cdn.cookielaw.org/logos/static/ot_close.svg86400.0 s625 B

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:0.5433749999999999] map[node:map[boundingRect:map[bottom:1014 height:533 left:0 right:412 top:481 width:412] lhId:page-1-DIV nodeLabel:每週全球投資評論 超強重大趨勢：人工智慧 了解更多 基礎建設 基礎建設與專業技術人員發展機會 了解更多(英文) 配息資訊 查詢貝萊德月配息基金配息紀錄 … path:1,HTML,1,BODY,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV selector:div.vi20 > div.homepage-hero-banner > div.callout-boxes > div.wrapper-980 snippet:<div class="wrapper-980"> type:node] score:0.543195] map[node:map[boundingRect:map[bottom:565 height:47 left:32 right:380 top:518 width:347] lhId:page-3-BUTTON nodeLabel:全部拒絕 path:1,HTML,1,BODY,5,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,BUTTON selector:div#onetrust-button-group-parent > div#onetrust-button-group > div.banner-actions-container > button#onetrust-reject-all-handler snippet:<button id="onetrust-reject-all-handler"> type:node] score:0.00018 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.blackrock.com/apac-retail-c-assets/cache-1776242861000/include/common/fonts/blk-fort/BLKFort-Book.woff2]]] type:subitems]]]

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.

URLEst Savings
/apac-retail-c-assets/cache-1776242861000/include/common/...310 ms
/apac-retail-c-assets/cache-1776242861000/include/common/...225 ms
/apac-retail-c-assets/cache-1776242861000/include/common/...160 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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:83.457 source:map[type:text value:[unattributed]]] map[reflowTime:74.832 source:map[column:115 line:450 type:source-location url:https://www.blackrock.com/apac-retail-c-assets/include/bundles/minified-ff0c766f3b5d322e3d21bf41ecd584ab.js urlProvider:network]] map[reflowTime:53.621 source:map[column:326 line:57 type:source-location url:https://tags.tiqcdn.com/utag/blackrock/main/prod/utag.js urlProvider:network]]]

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:1493.466 label:Time to first byte subpart:timeToFirstByte] map[duration:1022.581 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-P
nodeLabel: 任何由貝萊德投信 (下稱本公司) 為服務廣大投資人而製作之報價資料僅限作參考用，每 15秒提供最新即時之估計淨值。各交易貨幣的預估每單位淨值是由ICE Dat…
path: 1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,3,DIV,0,DIV,1,DIV,1,DIV,2,DIV,0,P
selector: div.terms-and-conditions-masthead__body-container > div.terms-and-conditions-masthead__body-container__terms-text-container > div.terms-and-conditions-masthead__body-container__terms-text-container__termtext > p
snippet: <p>

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
sourcedefense.blackrock.com/cdncch/vice_loader/blackrock/blackrockprod38.5 KiB1.3 s

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

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: 2.2 s
URLTime Spent
blackrock.com/1.4 s
www.blackrock.com/815 ms
www.blackrock.com/tw0.0 ms

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
每週全球投資評論 超強重大趨勢：人工智慧 了解更多 基礎建設 基礎建設與專業技術人員發展機會 了解更多(英文) 配息資訊 查詢貝萊德月配息基金配息紀錄 … div.vi20 > div.homepage-hero-banner > div.callout-boxes > div.wrapper-980
0.543
全部拒絕 div#onetrust-button-group-parent > div#onetrust-button-group > div.banner-actions-container > button#onetrust-reject-all-handler
0.000

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 CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 50.4 KiB
URLTransfer SizeEst Savings
/apac-retail-c-assets/include/bundles/minified-2cff407f4e...204.2 KiB27.4 KiB
/apac-retail-c-assets/include/bundles/minified-b81a4815cd...65.2 KiB15.6 KiB
/apac-retail-c-assets/include/bundles/minified-1b4c10cff9...78.9 KiB4.8 KiB
/apac-retail-c-assets/include/bundles/minified-3483f3860b...23.9 KiB2.4 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: 2.0 s 388.1 KiB
URLTransfer SizeEst Savings
/apac-retail-c-assets/include/bundles/minified-2cff407f4e...203.8 KiB194.3 KiB
/apac-retail-c-assets/include/bundles/minified-1b4c10cff9...78.5 KiB78.3 KiB
/apac-retail-c-assets/include/bundles/minified-b81a4815cd...64.7 KiB62.5 KiB
/apac-retail-c-assets/include/bundles/minified-3483f3860b...23.5 KiB21.7 KiB
21.4 KiB18.5 KiB
/apac-retail-c-assets/include/bundles/minified-ce3a0160b7...12.9 KiB12.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.5 s 397.1 KiB
URLTransfer SizeEst Savings
/apac-retail-c-assets/include/bundles/minified-aaa34762c4...128.8 KiB93.5 KiB
cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js128.2 KiB68.4 KiB
/apac-retail-c-assets/include/bundles/minified-ff0c766f3b...109.0 KiB67.6 KiB
tags.tiqcdn.com/utag/blackrock/main/prod/utag.js91.7 KiB64.2 KiB
sourcedefense.blackrock.com/cdncch/vice_release/1.23.9.357.7 KiB43.1 KiB
/vGiSZvKzcsfCP/giHHrQ9of/uJXjw/fcN3DJiN/bx5eaywUEwE/LVNAE...155.5 KiB31.5 KiB
/apac-retail-c-assets/include/bundles/minified-e4aa278323...32.4 KiB28.9 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.

URLTotal CPU TimeScript EvaluationScript Parse
www.blackrock.com/tw1.6 s26 ms8.0 ms
/vGiSZvKzcsfCP/giHHrQ9of/uJXjw/fcN3DJiN/bx5eaywUEwE/LVNAE...1.4 s1.2 s78 ms
Unattributable1.4 s312 ms0.0 ms
sourcedefense.blackrock.com/cdncch/vice_loader/blackrock/blackrockprod640 ms556 ms18 ms
/apac-retail-c-assets/include/bundles/minified-aaa34762c4...569 ms444 ms47 ms
cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js492 ms291 ms70 ms
/apac-retail-c-assets/include/bundles/minified-ff0c766f3b...418 ms78 ms40 ms
tags.tiqcdn.com/utag/blackrock/main/prod/utag.js387 ms117 ms53 ms
services.sdiapi.com/bolt/1.0.3.3/bolt.js193 ms179 ms8.8 ms
www.blackrock.com/akam/13/5417da3b166 ms155 ms7.4 ms
/apac-retail-c-assets/include/bundles/minified-cbdba6240d...116 ms27 ms1.5 ms
/apac-retail-c-assets/include/bundles/minified-a6da0595f2...65 ms18 ms46 ms
sourcedefense.blackrock.com/cdncch/vice_release/1.23.9.364 ms36 ms27 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js62 ms50 ms3.3 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 Evaluation3.6 s
Style & Layout1.9 s
Other1.1 s
Script Parsing & Compilation447 ms
Parse HTML & CSS304 ms
Garbage Collection187 ms
Rendering91 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 reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable
SharedWorkerWithNoActiveClientNot actionable

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
/apac-retail-c-assets/cache-1776242861000/include/common/...1.6 MiB
/apac-retail-c-assets/cache-1776242861000/include/common/...1.6 MiB
/apac-retail-c-assets/cache-1776242861000/include/common/...1.5 MiB
/apac-retail-c-assets/cache-1776242861000/include/common/...1.4 MiB
/apac-retail-c-assets/include/bundles/minified-2cff407f4e...204.2 KiB
/apac-retail-c-assets/cache-1776242861000/include/common/...186.6 KiB
/apac-retail-c-assets/cache-1776242861000/include/common/...170.8 KiB
/vGiSZvKzcsfCP/giHHrQ9of/uJXjw/fcN3DJiN/bx5eaywUEwE/LVNAE...155.7 KiB
/apac-retail-c-assets/cache-1776242861000/include/common/...138.8 KiB
/apac-retail-c-assets/include/bundles/minified-aaa34762c4...129.3 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
BlackRock 貝萊德 div.display-row > div.display-cell > a > img.logo
/apac-retail-c-assets/cache-1558532803000/images/media-bi...
貝萊德iShares ETF div.col-xl-5 > div.img-block > picture > img.lazyload
鳳梨蓋 div.ar-offset-1 > div.img-block > picture > img.lazyload
貝萊德在台灣 div.col-xl-5 > div.img-block > picture > img.lazyload
貝萊德LINE官方帳號QR div.offset-xl-1 > div.img-block > picture > img.lazyload

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

●Optimize DOM size
●Improve image delivery
●Modern HTTP
●Optimize viewport for mobile
●Minify JavaScript
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 250 ms
●Server Backend Latencies 210 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 520 ms
○INP breakdown
○LCP request discovery
○User Timing marks and measures
○Avoid non-composited animations
59

Accessibility

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

ARIA

Assistive technologies, like screen readers, work inconsistently when `aria-hidden="true"` is set on the document `<body>`. Learn how `aria-hidden` affects the document body.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
body#tw-one body#tw-one

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

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
本基金上市日前(不含當日)，經理公司不接受本基金受益權單位數之買回。 p > b > span > b
內文提及之「好的投資 人人有得」並非指稱投資該ETF基金之績效或獲利，為說明透過貝萊德iShares ETF的服務方案，有機會做為投資人準備不同的理財目標的途… p > b > span > b
股票入息基金所稱之「入息」係指基金會使用符合其投資目標之衍生性工具，以產生額外之收入。為獲取較一致性之配息收入，除股票投資之資本利得及股息收益外，賣出短期選擇… p > b > span > b
非投資等級債券基金主要係投資於較高風險之債券，適合能適當承受高風險之非保守型投資人，投資人投資以非投資等級債券為訴求之基金不宜占其投資組合過高之比重。由於非投… p > b > span > b
申購境內基金N 類型受益權單位（即遞延手續費類型之受益權單位）之受益人，其手續費之收取將於受益人申請買回時支付，且該費用將依持有期間有所不同。其餘費用之計收與… p > b > span > b
申購手續費屬後收型C級別之境外基金，手續費雖可遞延收取，惟每年仍須支付1.25％的分銷費，可能造成實際負擔費用增加。申購手續費屬後收型B級別之境外基金，手續費… p > b > span > b

These are opportunities to improve the legibility of your content.

○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
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Links are distinguishable without relying on color.
○`[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 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
○Buttons have an accessible name
○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
○Document has a `<title>` element
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○Heading elements appear in a sequentially-descending order
○`<html>` element has a `[lang]` attribute
○`<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.
○Image elements have `[alt]` attributes
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Links have a discernible name
○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.
○No element has a `[tabindex]` value greater than 0
○Touch targets have sufficient size and spacing.
○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"]`
○Document has a main landmark.
○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.
81

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 / WarningSource
SharedStorage
/apac-retail-c-assets/include/bundles/minified-ff0c766f3b... line 450, col 115
●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 browser errors logged to the console
●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
100

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.

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

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